Question 1

Which of the following is an example of a tissue?

Accepted Answer

A tissue is a group of similar cells that perform a specific function. Heart muscle is a type of tissue composed of specialized cardiac muscle cells. Circulatory system and heart are not examples of tissues, as they are composed of multiple types of tissues working together. Red blood cell is also not an example of tissue, as it is a single cell and not a group of similar cells.

Question 2

Which type of tissue forms a communication and coordination system within the body?

Accepted Answer

Nervous tissue forms a communication and coordination system within the body by transmitting electrical signals through neurons.

Question 3

Cells receive material such as food,minerals,and oxygen from the outside world through

Accepted Answer

Cells receive material such as food, minerals, and oxygen from the outside world through interstitial fluid, which is the fluid that surrounds cells in tissues. Neurons, water, and matrix fibers do not directly deliver nutrients to cells.

Question 4

Which of the following imaging techniques is best suited for visualizing fine anatomic detail in the brain?

Accepted Answer

Magnetic resonance imaging (MRI) is the imaging technique that is best suited for visualizing fine anatomic detail in the brain. MRI uses magnetic fields and radio waves to produce detailed images of the brain, allowing for a clear visualization of the brain's structures, such as the cortex, white matter, and subcortical structures. PET imaging and X-ray imaging do not provide the same level of detail as MRI. An electrocardiogram is not an imaging technique but rather a diagnostic test used to measure the electrical activity of the heart.

Question 5

Which of the following tissues can currently be produced artificially and has been successfully used in human transplants?

Accepted Answer

Skin is the only tissue that can currently be produced artificially and has been successfully used in human transplants.

Question 6

Structure in the living world is organized into hierarchical levels.Which of the following lists these from least inclusive to most inclusive?

Accepted Answer

The correct hierarchy from least inclusive to most inclusive is: molecule, cell, tissue, organ, organ system, organism. Choice D lists the levels in the correct order.

Question 7

Geckos are able to walk up walls and across ceilings because of

Accepted Answer

Geckos have millions of tiny hairs on their toes called setae. Each seta branches out into even smaller structures called spatulae which are able to form weak molecular bonds with surfaces, creating a type of adhesive force known as van der Waals force. This allows geckos to climb vertical and even inverted surfaces.

Question 8

Which type of epithelial tissue shown is a stratified tissue?

Accepted Answer

The answer of Which type of epithelial tissue shown is...

Question 9

Which organ system removes nitrogen- containing waste products from blood?

Accepted Answer

The urinary system, which includes kidneys, ureters, bladder, and urethra, is responsible for removing nitrogen-containing waste products like urea and ammonia from the blood and eliminating them from the body through urine. The integumentary system is responsible for protecting the body from external factors and regulating body temperature. The lymphatic system is responsible for immune defense and fluid balance. The muscular system is responsible for movement and support.

Question 10

Stratified squamous epithelium is well- suited for

Accepted Answer

Stratified squamous epithelium is composed of multiple layers of flat, scale-like cells which make it well-suited for providing protection to body surfaces subject to friction and abrasion, such as the skin, mouth, and esophagus.

Question 11

The respiratory system includes all of the following structures except the

Accepted Answer

The esophagus is not a part of the respiratory system, but rather a part of the digestive system.

Question 12

Which of the following is closely associated with the digestive,respiratory,and urinary systems?

Accepted Answer

The circulatory system is closely associated with the digestive, respiratory, and urinary systems as it transports nutrients, gases, and waste products to and from these systems throughout the body.

Question 13

Epithelial tissues

Accepted Answer

Epithelial tissues are specialized to cover and line both external and internal body surfaces. They act as a barrier and protect the body from injury, infection, and dehydration.

Question 14

Which part of this figure shows a complete organ system?

Accepted Answer

The answer of Which part of this figure shows a...

Question 15

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides.If this individual is able to adjust the salt concentration of its body fluids,its salt concentration will have

Accepted Answer

If the individual is able to adjust the salt concentration of its body fluids, it will be able to maintain a stable internal environment despite fluctuations in the surrounding water. Therefore, its salt concentration will have slight fluctuations that are kept within a narrow range.

Question 16

Connective tissue is different from the other major tissue types in that

Accepted Answer

Connective tissue is made up of cells that are dispersed throughout a nonliving matrix, which includes fibers and ground substance. This is in contrast to epithelial, muscular, and nervous tissue which are primarily composed of cells.

Question 17

Suppose your doctor decides to X- ray your hip.Which would show up more distinctly,the muscles or the bones?

Accepted Answer

Bones would show up more distinctly on an X-ray because they are denser than muscles, allowing for greater absorption of the X-ray radiation.

Question 18

An organ represents a higher level of structure than the tissue composing it and performs functions that the tissues cannot perform alone.This is an example of the principle of

Accepted Answer

The principle of emergent properties states that a higher level of organization (such as an organ) has properties that cannot be predicted from the properties of its individual components (such as the tissues composing it). This is because the organization and interaction of these components create new properties and functions that emerge at the higher level of organization.

Question 19

X- ray imaging is routinely used to check for all of the following except

Accepted Answer

X-ray imaging is not the primary imaging modality used to diagnose brain disorders. Other imaging techniques like CT scan and MRI are commonly used for this purpose. However, X-ray may still be used in certain cases such as to identify a skull fracture or to check for foreign objects in the nasal passages or ears.

Question 20

Which of the following is most likely to be responsible if,when your blood sugar level rises,the level of sugar goes back down?

Accepted Answer

A homeostatic mechanism based on negative feedback is responsible for regulating blood sugar levels. When the blood sugar level rises, the body releases insulin, which lowers blood sugar levels by promoting the uptake of glucose by cells or by converting it into glycogen for storage. This negative feedback loop helps to maintain blood sugar levels within a narrow range. Type II diabetes, on the other hand, is a condition where the body becomes resistant to insulin, resulting in high blood sugar levels that are not properly regulated by negative feedback. The use of sugar for energy by cells is also a normal part of the process, but it is not responsible for regulating blood sugar levels. Positive feedback, which amplifies a response, would not be helpful in maintaining stable blood sugar levels.

Quiz 20: Unifying Concepts of Animal Structure and Function