Q: If the set point for body temperature is $$37^\\circ C$$, what is the normal range depicted in the graph?

$$36.7^\\circ C to$$ $$37.2^\\circ C$$

Question 1

Which of the following best describes the concept of homeostasis as illustrated in the provided graph?

Accepted Answer

The body maintains internal conditions within a narrow, dynamic range around a set point through regulatory mechanisms.

Question 2

According to the graph, what physiological response occurs when body temperature rises above the set point?

Accepted Answer

Vessels dilate and sweating increases.

Question 3

Which type of feedback mechanism is primarily responsible for maintaining body temperature within the normal range as shown in the graph?

Accepted Answer

Negative feedback

Question 4

If a person is exposed to a cold environment and their body temperature drops below 36.7°C, which of the following responses is most likely to occur according to the graph?

Accepted Answer

Vessels constrict and sweating decreases.

Question 5

Which of the following best explains why the body does not maintain temperature at a single fixed value, but instead within a range as shown in the graph?

Accepted Answer

Maintaining a fixed value would require too much energy and is unnecessary for proper function.

Question 6

Which of the following is an example of a negative feedback response as depicted in the graph?

Accepted Answer

Sweating when body temperature rises above the set point.

Question 7

If the set point for body temperature is $$37^\circ C$$, what is the normal range depicted in the graph?

Accepted Answer

$$36.7^\circ C to$$ $$37.2^\circ C$$

Question 8

Which component of a homeostatic control system detects changes in body temperature as shown in the graph?

Accepted Answer

Receptor

Question 9

A patient is unable to sweat due to a genetic disorder. Based on the graph, what is a likely consequence when their body temperature rises above the normal range?

Accepted Answer

Their body temperature will continue to rise, increasing the risk of heat-related illness.

Question 10

Which of the following best describes the role of the control center in the homeostatic regulation of body temperature?

Accepted Answer

It processes information from receptors and sends commands to effectors.

Question 11

Which of the following scenarios best illustrates intrinsic (autoregulation) of homeostasis?

Accepted Answer

A local increase in blood flow to active muscles during exercise without nervous or hormonal input.

Question 12

Which of the following is a possible consequence if homeostatic mechanisms fail, as described in the study materials?

Accepted Answer

Disease or death.

Question 13

Which of the following best describes the effector's role in the homeostatic regulation of body temperature?

Accepted Answer

Produces a response to restore normal temperature.

Question 14

Which of the following is an example of extrinsic regulation of homeostasis?

Accepted Answer

The nervous system triggers widespread vasodilation in response to increased body temperature.

Question 15

Which of the following best explains why negative feedback is more common than positive feedback in homeostatic regulation?

Accepted Answer

Negative feedback opposes changes, helping maintain stability.

Introduction to Anatomy, Physiology, and Homeostasis

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