Deck 41: The Animal Body and Principles of Regulation

Question 1

A recent study suggests the surprising idea that intestinal goblet cells present food antigens to dendritic cells to induce tolerance to food molecules.Thus,goblet cell dysfunction may be a cause of food allergies.If this is true,it illustrates the importance of coordination between which two organ systems?

A)immune system and circulatory system
B)circulatory system and endocrine system
C)digestive system and endocrine system
D)digestive system and immune system

Answer 1

D

Question 2

To diagnose and treat a disease,a doctor must evaluate the patient's body at multiple levels of organization.Identify the level of organization relevant to each stage of the process described below. (1)As part of Fred's annual physical,the doctor examined his skin,fingernails and hair for signs of disease.Noticing an unusual lesion on his neck,the doctor referred Fred to a dermatologist.
(2)Upon observing the lesion,the dermatologist said,"Yes,this looks like it could be a squamous cell carcinoma,a tumor in the epidermis of the skin."
(3)The dermatologist carefully examined all of Fred's skin for signs of additional tumors,but did not find any.
(4)The dermatologist removed the lesion and sent it for a biopsy.Under the microscope,the pathologist saw some cells with abnormal morphology and confirmed a diagnosis of squamous cell carcinoma.However,he noted that the margins of the lesion were clear of abnormal cells,and the tumor had been successfully removed.

A)organism,cell,tissue,organ
B)organ system,tissue,organ,cell
C)organ system,organ,tissue,cell
D)organism,cell,organ system,tissue

Answer 2

B

Question 3

The glands of vertebrates are derived from ________ epithelium.

A)invaginated
B)stratified
C)endocrine
D)scarified
E)keratinized

Answer 3

A

Question 4

Which type of cells line the lungs and blood vessels?

A)simple squamous epithelium
B)simple cuboidal epithelium
C)simple columnar epithelium
D)stratified squamous epithelium
E)keratinized squamous epithelium

Question 5

Which of the following epithelial tissues secretes mucous and is dense with cilia?

A)cuboidal
B)squamous
C)simple
D)stratified
E)pseudostratified columnar

Question 6

If the connection between a gland and the epithelial membrane is maintained as a duct,the gland is called a(n)________ gland.

A)exocrine
B)endocrine
C)lymph
D)sebaceous
E)adrenal

Question 7

Which of the following are the fundamental embryonic tissues called the "germ layers"?

A)tissues,organs,and organ systems
B)mesoderm,muscle,and tissue
C)ectoderm,endoderm,and exoskeleton
D)mesoderm,endoderm,and ectoderm
E)mesoderm,exoderm,and hydroderm

Question 8

In adult vertebrates,which of these is not one of the four principal kinds of primary tissues?

A)epithelial
B)connective
C)supportive
D)muscle
E)nerve

Question 9

Which of the following types of epithelia would be likely to make up the tubules of the kidney?

A)cuboidal
B)squamous
C)columnar and squamous
D)columnar
E)pseudostratified

Question 10

The most abundant protein in mammals is collagen.This strong,ropelike molecule is particularly abundant in which tissue?

A)heart muscle
B)spinal cord
C)ligaments
D)skeletal muscle

Question 11

Connective tissue includes adipose tissue,tendons,bone,cartilage,and blood.What do all these tissues have in common?

A)They all consist of few cells sparsely distributed in large amounts of extracellular material.
B)They all provide structural support to the body.
C)They are all hard tissues.
D)They all physically bind other tissues together.

Question 12

Which of the following is not a level of organization in the vertebrate body?

A)cells
B)bones
C)tissues
D)organs
E)organ systems

Question 13

If at the last minute the pitcher decides to throw a curveball,which tissue responds first?

A)epithelial tissue
B)ectoderm
C)nerve tissue
D)muscle tissue

Question 14

Goblet cell hyperplasia is associated with asthma.Based on their function,what is the likely outcome of an overabundance of goblet cells?

A)decreased mucus production
B)excess mucus production
C)excess O₂ absorption
D)decreased CO₂ absorption

Question 15

It's the ninth inning,and the bases are loaded.As the pitcher winds up to throw the ball,how does each tissue in his arm contribute to this critical pitch? The ________ of his fingers grips the ball.His ________ sends instructions that trigger his ________ to contract.His ________ provides stability and transmits the force produced.

A)ectoderm; ectoderm; mesoderm; endoderm
B)connective tissue; nerve tissue; muscle tissue; epithelial tissue
C)epithelium; ectoderm; mesoderm; endoderm
D)epithelial tissue; nerve tissue; muscle tissue; connective tissue

Question 16

Why are epithelial membranes not very thick?

A)Epithelial tissues are required to support other cells growing on top of the tissue.
B)Epithelial tissues play a critical role in transport,and must be thin to allow diffusion to occur.
C)Epithelial tissues can only reach a certain thickness because their growth is constrained by microtubules inside the cell membrane.
D)Thick epithelial tissues would collapse due to the drying effect of the environment.
E)Epithelial tissues are programmed to stop dividing after only a few cell cycles.

Question 17

What are epithelial cells with a flat,irregular shape and tapered edges called?

A)columnar
B)pseudostratified
C)squamous
D)cuboidal
E)stratified

Question 18

When collagen is hydrolyzed it forms gelatin,the main ingredient of a jiggly dessert adored by children.What parts of a cow provide a rich source of collagen?

A)heart and other muscles
B)brain
C)glandular organs
D)skin,tendons,and cartilage

Question 19

A friend asks you how exocrine glands differ from endocrine glands.She knows that both form from invaginated epithelium.How do you respond?

A)Exocrine and endocrine glands are essentially the same,both produce products that are secreted to the skin's surface.
B)Exocrine glands produce hormones which enter the blood stream,while endocrine glands secrete sweat and oil directly to the surface of the skin.
C)Endocrine glands produce hormones which enter the blood stream,while exocrine glands secrete sweat and oil directly to the surface of the skin.
D)Exocrine glands are found in the thoracic cavity while endocrine glands are located in the pleural cavity.
E)The liver is an endocrine gland that secretes directly into epithelial tissues.The pituitary gland is an exocrine gland that secretes into the blood stream.

Question 20

Which of the following would not provide protection to the epidermis?

A)keratinized epithelium
B)simple squamous epithelium
C)stratified squamous epithelium
D)layers of dead squamous cells

Question 21

Which is NOT a cell or fiber type found in loose connective tissues?

A)macrophages
B)mast cells
C)adipose cells
D)collagen fibers
E)chondrocytes

Question 22

Your professor asks you to explain the difference between a tendon and a ligament.How do you answer?

A)Tendons secure muscles to other muscles and ligaments secure bones to other bones.
B)Tendons and ligaments have the same function but are found in different areas of the body.
C)Tendons secure muscles to bones and ligaments secure muscles to other muscles.
D)Tendons are just enlarged ligaments.
E)Tendons secure muscles to bones and ligaments secure bones to other bones.

Question 23

Which term refers to muscles that are attached to bones,and cause bones to move at their joints when they contract?

A)smooth muscles
B)skeletal muscles
C)cardiac muscles
D)ligament tissues
E)involuntary muscles

Question 24

A scientist is trying to coax stem cells to differentiate into muscle to use as a therapy for muscular dystrophy.He looks at his Petri dish and is excited to see the cells contracting! The cells appear striated and multinucleate.What type of muscle are they?

A)cardiac muscle
B)smooth muscle
C)involuntary muscle
D)skeletal muscle

Question 25

In humans,which of these structures is not made of cartilage?

A)tip of the nose
B)outer ear
C)intervertebral disks of the backbone
D)knee cap
E)larynx

Question 26

Of which materials is cartilage composed?

A)glycoproteins and calcium phosphate
B)glycoproteins and collagen fibers
C)collagen fibers and osteocytes
D)osteocytes and glycoproteins
E)osteocytes and calcium phosphate

Question 27

Which of the following statements about bone and its structure is NOT correct?

A)Bone contains an extracellular matrix of collagen fibers and inorganic calcium phosphate crystals.
B)Bone tissue is not living because it contains inorganic calcium phosphate crystals.
C)Bone tissue is a special form of connective tissue.
D)Bone tissue serves as a reservoir for calcium and phosphate ions.
E)Bone marrow is a reservoir for blood stem cells

Question 28

Which muscle contraction is involuntary?

A)cardiac only
B)smooth only
C)cardiac and smooth
D)skeletal only
E)cardiac,smooth,and skeletal

Question 29

The characteristic that makes the muscle cells unique is the relative abundance and organization of

A)collagen fibers.
B)gelatinous mass.
C)actin and myosin fibers.
D)keratin fibers.
E)fibroblast cells.

Question 30

What feature of cardiac muscle helps the cells coordinate their contraction as a single unit?

A)fused cells with multiple nuclei
B)covalent bonds between actin and myosin molecules
C)intercalated disks rich in gap junctions
D)large numbers of motor neurons

Question 31

All connective tissues share which of the following structural features? I-contain cells
II-contain a matrix filled with extracellular material
III-contain sarcomere units

A)I and III
B)II only
C)II and III
D)I,II,and II
E)I and II

Question 32

Which is another name for bone cells that remain alive even after the extracellular matrix becomes hardened with calcium phosphate crystals?

A)osteocytes
B)erythrocytes
C)leukocytes
D)fibrocytes
E)chrondrocytes

Question 33

What tissue type produces the tough coverings that package organs?

A)loose connective tissue
B)dense irregular connective tissue
C)collagen
D)dense regular connective tissue
E)adipose

Question 34

Which of the following types of muscles are striated?

A)skeletal and smooth
B)cardiac only
C)triceps and biceps only
D)skeletal and cardiac
E)skeletal,smooth,and cardiac

Question 35

Vertebrate locomotion results from the contraction of muscles anchored to what other tissue?

A)bone
B)an exoskeleton
C)each other
D)nerves
E)the plasma membrane

Question 36

Muscles can carry out their unique motor function because they are the only cells which contain actin and myosin.

Question 37

Which connective tissue has a fluid matrix?

A)adipose
B)blood
C)cartilage
D)dense connective tissue
E)loose connective tissue

Question 38

You are researching a family with a heritable disease whose symptoms include hyper-flexible joints,pliable skin,stretchy ligaments,and fragile muscles that tear easily.You plan to use genetic testing to determine the cause of the disease.Which gene do you sequence first?

A)actin
B)epidermal growth factor
C)myosin II heavy chain
D)collagen

Question 39

Which of these is not part of loose connective tissue?

A)collagen
B)elastin
C)reticulin
D)chondroitin
E)adipose cells

Question 40

A patient has a disease with symptoms in the outer ear,nose,trachea and spine.Which cells are most likely to have a problem?

A)leukocytes
B)erythrocytes
C)chondrocytes
D)osteocytes
E)fibroblasts

Question 41

What are the cells that are specialized to produce and conduct electrochemical impulses called?

A)neurons
B)dendrites
C)axons
D)fibroblasts
E)astrocytes

Question 42

Due to a mutation in a smooth muscle gene,the blood vessels in the skin of a certain strain of mouse become dilated when temperature falls below a certain point.Based on the likely outcome of this mutation,what precautions should the researchers take to maintain the health of their mice?

A)The mouse room should be maintained at a cooler than normal temperature.
B)The mouse room should be consistently maintained at a warm temperature.
C)The mice will have weak muscles,and should be provided with exercise wheels.
D)The mice will be susceptible to high blood pressure,and should not be provided with exercise wheels.

Question 43

Damage to the integument may trigger action by cells of which system?

A)reproductive system
B)immune system
C)endocrine system
D)muscular system

Question 44

When we watch Olympic athletes perform,we are admiring the expert control of which systems working together?

A)skeletal,endocrine,and circulatory systems
B)nervous,circulatory,and skeletal systems
C)muscular,integumentary,and circulatory systems
D)nervous,muscular,and skeletal systems

Question 45

Where is the nucleus of a neuron found?

A)axon branches
B)companion cell
C)cell body
D)dendrites
E)myelin sheath

Question 46

The cell body of a motor neuron resides in the spinal cord,but it may control muscles a long distance away.In a giraffe,the ________ of a leg motor neuron may be six feet long!

A)dendrite
B)soma
C)axon
D)node of Ranvier

Question 47

The axon of a neuron can only communicate with other neuronal cells.

Question 48

Which statement describes a home heating and cooling system that functions in a homeostatic way?

A)The temperature always stays the same.
B)The heater never comes on.
C)The heater is on at a constant rate.
D)The thermostat keeps the temperature within a narrow range.

Question 49

Homeostasis is maintained using negative feedback loops.Which part of a negative feedback loop detects conditions?

A)response
B)effector
C)sensor
D)integrating center
E)stimulus

Question 50

Mechanisms that help generate heat and those that allow release of heat are an example of ________.Collectively,these mechanisms increase the ________ of body temperature.

A)endothermic regulation; flexibility
B)poikilothermic regulation; stability
C)ectothermic regulation; flexibility
D)antagonist effectors; stability

Question 51

A bride-to-be is enjoying a manicure and a facial before her hair is styled for the wedding.What organ system is being pampered?

A)lymphatic system
B)integumentary system
C)endocrine system
D)digestive system

Question 52

A recovering stroke patient complained about strange smells in his room,but no cause could be found.The doctor diagnosed this as phantosmia,or olfactory hallucination,and said it was likely due to stroke-related damage to which tissue?

A)nervous system
B)olfactory receptors
C)sensory systems
D)nodes of Ranvier

Question 53

What structure do myelin sheaths form along?

A)axons
B)dendrites
C)neuroglia
D)cell bodies
E)ganglia

Question 54

A couple is having difficulty conceiving a child,and they decide to see a fertility specialist.Which two organ systems will the specialist examine in this couple?

A)reproductive and nervous systems
B)endocrine and urinary systems
C)reproductive and endocrine systems
D)reproductive and urinary systems

Question 55

Which of the following is most likely to function as a defense system?

A)the integumentary system
B)the musculoskeletal system
C)the endocrine system
D)the sensory system
E)the nervous system

Question 56

In your Ph.D.research,you use thin slices of brain tissue to study neuronal signaling.You attach an electrode to a single neuron,but cannot detect any activity.What is the most likely explanation?

A)When you sliced the brain,you disconnected the cell from its dendrites.
B)Neurons are not electrically active -- you should be recording neuroglia instead.
C)When you sliced the brain,you disconnected the cell from its neuroglia.
D)Excessive myelination is blocking inputs to the cell.

Question 57

Low body temperature triggers adaptive responses to conserve heat.Once the integrating center detects that body temperature has risen,it will decrease these responses.What does this exemplify?

A)adaptation
B)negative feedback
C)positive feedback
D)acclimatization

Question 58

Controversy surrounds the use of zinc-containing nasal sprays as a cold remedy,since they have been associated with anosmia (loss of smell).If true,this is likely due to the sprays damaging which tissue?

A)nervous system
B)osmic nerve
C)sensory systems
D)neuroglial system

Question 59

Which of the following systems is NOT directly involved with regulation and maintenance of the body's chemistry?

A)the digestive system
B)the circulatory system
C)the respiratory system
D)the urinary system
E)the reproductive system

Question 60

Why do some bread recipes suggest letting the dough rise in a warm place after kneading?

A)Warming the bread slightly before cooking it in a hot oven stretches out the gluten.
B)The metabolic rate of yeast speeds up at warmer temperatures,so more carbon dioxide is released and the dough rises more quickly.
C)The metabolic rate of yeast slows down at warmer temperatures,so more sugar is maintained and the bread is sweeter.
D)Yeast cannot carry out fermentation at room temperature.

Question 61

After yet another patron dripped sweat on her desk,the clerk at the gym complained,"It's gross working at a gym,with everyone sweating all the time." "Yes," the manager replied,"and it's probably costing us more for ________,but I'll bet we're saving on ________."

A)towels; heating
B)weight machines; treadmills
C)the water cooler; air conditioning
D)the water cooler; towels

Question 62

When a dog's brain detects the need to dissipate excess heat and the dog begins to pant,the brain acts as the ________,and the panting behavior acts as the ________.

A)stimulator; effector
B)integrating center; sensor
C)integrating center; effector
D)sensor; integrating center

Question 63

Some animals allow their body temperature to conform to the environment.What is the old term for these animals,and what is the newer preferred term?

A)heterotherms; homeotherms
B)homeotherms; endotherms
C)isotherms; poikilotherms
D)poikilotherms; ectotherms
E)endotherms; homeostats

Question 64

You are an engineer at a power plant that creates large volumes of hot waste water,which disrupts the ecosystem of the river it drains into.Another part of the plant requires warm oil,and the plant uses large amounts of energy to heat it.Inspired by countercurrent exchange in whales,you save energy and benefit the environment by

A)running the oil pipes under the river after dumping in the hot waste water
B)running the oil pipes around the waste water pipes,to allow heat transfer from water to oil
C)running the waste water and oil through a single pipe
D)adding a sensor,integrating center and effectors to control temperature in both pipes

Question 65

Thermoregulation depends on monitoring of blood temperature.What structure acts as the mammalian temperature sensor?

A)hypothalamus
B)peripheral blood vessels
C)adrenal medulla
D)anterior pituitary gland
E)thyroid

Question 66

Dogs use panting to dissipate excess heat.What part of their brain detects the need for this response and sends the signal to pant?

A)hippocampus
B)prefrontal cortex
C)amygdala
D)hypothalamus

Question 67

What is the approximate Q₁₀ value for most enzymes?

A)0)2
B)2
C)5
D)10
E)20

Question 68

Which of these methods of heat transfer is not relevant to biological systems?

A)radiation
B)conduction
C)convection
D)evaporation
E)reflection

Question 69

Which of these thermoregulation processes can be sustained for the longest period of time?

A)shivering
B)sweating
C)nonshivering thermogenesis
D)hibernation
E)fever

Question 70

Which of these factors would have the least effect on heat transfer processes in animals?

A)surface area of the body
B)difference between body temperature and ambient temperature
C)internal insulation such as blubber
D)external insulation such as feathers or fur
E)bone density

Question 71

Which cells aid in the operation of the nervous system but are unable to conduct nerve impulses?

A)neurons
B)intercalated disks
C)goblet cells
D)neuroglia

Question 72

Which of these is not a method used by ectotherms to affect body temperature?

A)countercurrent heat exchange
B)basking in the sun
C)shivering
D)dilation or contraction of blood vessels
E)increasing metabolic rate

Question 73

If the set point of the hypothalamus were to suddenly rise to 40°C (as in the induction phase of a fever),what would the initial response of the body be?

A)glands release sweat
B)muscles contract to cause shivering
C)nothing
D)body temperature drops
E)blood vessels dilate

Question 74

If a mammal suffered damage to the temperature sensor in its brain,what would be the result?

A)The integrating center would not receive inputs to compare to the set point.Body temperature could rise or fall to dangerous levels.
B)Only the integumentary system is required to sense temperature changes.Body temperature would remain stable.
C)The animal would have to rely on shivering instead of vasoconstriction to maintain body heat.
D)The animal would fall back onto a more primitive ectothermic mode of regulation.

Question 75

Which of these animals has the highest metabolic rate per unit body mass?

A)shrew
B)horse
C)cat
D)human
E)elephant