Question 1

During exercise, blood flow to skeletal muscles increases. The initial response that increases blood flowisautomatic and independent of the nervous and endocrine systems. Which type of homeostatic regulation is this? Why?

Accepted Answer

The answer of During exercise, blood flow to skeletal muscles...

Question 2

In ________ a stimulus produces a response that opposes or negates the original stimulus.
A) negative feedback
B) positive feedback
C) homeostatic equilibrium
D) dynamic equilibrium
E) homeostasis

Accepted Answer

This is the definition of negative feedback. It is a regulatory mechanism that helps maintain homeostasis by counteracting changes in various physiological systems.

Question 3

What is homeostatic regulation, and what is its physiological importance?

Accepted Answer

The answer of What is homeostatic regulation, and what is...

Question 4

The integrating center for the negative feedback loop that regulates body temperature is the
A) hypothalamus.
B) skin.
C) temperature sensor.
D) positive feedback center.
E) thermostat.

Accepted Answer

The hypothalamus serves as the integrating center for the negative feedback loop that regulates body temperature by receiving information from temperature sensors in the skin and other areas of the body, and then initiating appropriate responses to regulate body temperature. The skin and temperature sensors are components of this regulatory system, but they do not serve as the integrating center. A positive feedback center would not be involved in negative feedback regulation. "Thermostat" is a term often used to describe the hypothetical set point for body temperature, but it is not a physical structure that serves as the integrating center for temperature regulation.

Question 5

In-Text Figure Based Questions
-If a person's body temperature gets too high, the body will respond by decreasing its temperature to restorehomeostasis. What are some of the body's homeostatic responses to decrease body temperature? (Figure 1-9)
A) blood vessels constrict, sweating increases
B) blood vessels are not affected but sweating decreases
C) blood vessels dilate, sweating increases
D) shivering increases
E) sweating decreases, shivering increases

Accepted Answer

When the body temperature gets too high, the body responds by dilating blood vessels to increase blood flow to the skin's surface, allowing heat to be lost through radiation, convection, and conduction. This response is called vasodilation. Additionally, the body increases sweating to help cool down. As sweat evaporates from the skin's surface, it takes heat with it, which helps the body to decrease its temperature.

Question 6

In-Text Figure Based Questions
-Which plane separates the body into superior and inferior portions? Which plane separates the body into anterior and posterior portions? (Figure 1-6)
A) transverse/horizontal; sagittal
B) sagittal; transverse/horizontal
C) frontal/coronal; sagittal
D) transverse/horizontal; frontal/coronal
E) frontal/coronal; transverse/horizontal

Accepted Answer

The transverse or horizontal plane separates the body into superior and inferior portions, while the frontal or coronal plane separates the body into anterior and posterior portions.

Question 7

In-Text Figure Based Questions
-Using directional references for a person in anatomical position, how would you describe the relationshipofthe hand compared to the elbow? To the groin? (Figure 1-5)
A) proximal; medial
B) proximal; posterior
C) proximal; lateral
D) distal; medial
E) distal; lateral

Accepted Answer

The hand is distal to the elbow because it is further away from the trunk of the body. The hand is lateral to the groin because it is further from the midline of the body.

Question 8

In ________ a stimulus produces a response that amplifies or enhances the original stimulus.
A) negative feedback
B) positive feedback
C) homeostatic equilibrium
D) dynamic equilibrium
E) homeostasis

Accepted Answer

Positive feedback occurs when a stimulus amplifies or enhances the original stimulus, leading to a greater response.

Question 9

In-Text Figure Based Questions
-In which abdominopelvic quadrant and region is the stomach predominantly found? (Figure 1-4)
A) right upper quadrant and epigastric region
B) left lower quadrant and umbilical region
C) left upper quadrant and epigastric region
D) right lower quadrant and umbilical region
E) left lower quadrant and hypochondriac region

Accepted Answer

According to Figure 1-4, the stomach is predominantly found in the left upper quadrant and epigastric region.

Question 10

Name the two upper abdominal quadrants and list the organs that lie in each.

Accepted Answer

The answer of Name the two upper abdominal quadrants and...

Question 11

Name the organs found in the thoracic cavity.

Accepted Answer

The answer of Name the organs found in the thoracic...

Question 12

Explain what dynamic equilibrium is and how it affects homeostasis.

Accepted Answer

The answer of Explain what dynamic equilibrium is and how...

Question 13

In-Text Figure Based Questions
-Are the following anatomical landmarks visible from the anterior or posterior view: dorsal, gluteal, calcaneal? (Figure 1-3)
A) anterior
B) posterior

Accepted Answer

- Dorsal refers to the back, which is visible from the posterior view.
- Gluteal refers to the buttocks, which are also visible from the posterior view.
- Calcaneal refers to the heel, which is visible from the posterior view.

Question 14

Disease is an indicator of
A) negative feedback.
B) signs and symptoms.
C) homeostatic failure.
D) positive feedback.
E) All of the answers are correct.

Accepted Answer

Disease is often caused by a failure in the body's ability to maintain homeostasis, or a stable internal environment. This can result in signs and symptoms, which are an indicator of the disease. Negative feedback is the body's mechanism for maintaining homeostasis, so it is not directly related to disease. Positive feedback can contribute to disease progression in some cases, but it is not typically the primary indicator of disease. Therefore, the best choice is C.

Question 15

An example of a receptor in a negative feedback loop controlling body temperature would be
A) temperature sensors on the skin that detect a stimulus.
B) sweat glands that increase secretion.
C) regulatory centers that send commands to an effector.
D) effectors that cause blood vessels to dilate.
E) sweat glands that act like effectors.

Accepted Answer

Temperature sensors on the skin detect a stimulus and send signals to the regulatory centers in the brain, which then activate effectors such as sweat glands or blood vessels to restore body temperature to its set point. This is an example of a negative feedback loop as it works to counteract any deviation from the set point temperature.

Quiz 1: An Introduction to Anatomy and Physiology

During exercise, blood flow to skeletal muscles increases. The initial response that increases blood flowisautomatic and independent of the nervous and endocrine systems. Which type of homeostatic regulation is this? Why?

In ________ a stimulus produces a response that opposes or negates the original stimulus.

What is homeostatic regulation, and what is its physiological importance?

The integrating center for the negative feedback loop that regulates body temperature is the

In-Text Figure Based Questions -If a person's body temperature gets too high, the body will respond by decreasing its temperature to restorehomeostasis. What are some of the body's homeostatic responses to decrease body temperature? (Figure 1-9)

In-Text Figure Based Questions -Which plane separates the body into superior and inferior portions? Which plane separates the body into anterior and posterior portions? (Figure 1-6)

In-Text Figure Based Questions -Using directional references for a person in anatomical position, how would you describe the relationshipofthe hand compared to the elbow? To the groin? (Figure 1-5)

In ________ a stimulus produces a response that amplifies or enhances the original stimulus.

In-Text Figure Based Questions -In which abdominopelvic quadrant and region is the stomach predominantly found? (Figure 1-4)

Name the two upper abdominal quadrants and list the organs that lie in each.

Name the organs found in the thoracic cavity.

Explain what dynamic equilibrium is and how it affects homeostasis.

In-Text Figure Based Questions -Are the following anatomical landmarks visible from the anterior or posterior view: dorsal, gluteal, calcaneal? (Figure 1-3)

Disease is an indicator of

An example of a receptor in a negative feedback loop controlling body temperature would be