Question 1

Indicate the roles served by each component of this control system by using the answer code.
Temperature-sensitive nerve cells monitor the body temperature and provide information about its status to a temperature-control centre in the hypothalamus, a part of the brain. The hypothalamus can bring about adjustments in body temperature by inducing shivering or sweating, among other things.
-temperature-sensitive nerve cells

Accepted Answer

The temperature-sensitive nerve cells are sensors as they monitor the body temperature and provide information about its status to the temperature-control centre.

Question 2

By using the following answer code (options may be used more than once or not at all), indicate whether the following physiological event represents
-increased cardiac activity to elevate blood pressure when systemic pressure is low

Accepted Answer

Negative-feedback control mechanisms work to maintain homeostasis by counteracting deviations from normal. In this case, when systemic blood pressure is low, increased cardiac activity works to elevate blood pressure back to normal levels, exemplifying a negative-feedback mechanism.

Question 3

By using the following answer code (options may be used more than once or not at all), indicate whether the following physiological event represents
-the release of a hormone to lower blood calcium level when it gets too high

Accepted Answer

This physiological event represents negative feedback control as it involves the release of a hormone to counteract an increase in blood calcium levels, bringing it back to proper homeostatic levels. Negative feedback maintains stable conditions by reversing any deviations from the set point.

Question 4

Indicate the roles served by each component of this control system by using the answer code.
Temperature-sensitive nerve cells monitor the body temperature and provide information about its status to a temperature-control centre in the hypothalamus, a part of the brain. The hypothalamus can bring about adjustments in body temperature by inducing shivering or sweating, among other things.
-skeletal muscles and sweat glands

Accepted Answer

The answer of Indicate the roles served by each component...

Question 5

MATCHING
Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all).
-The brain is primarily made of this tissue.

Accepted Answer

The brain is primarily composed of nervous tissue, which includes neurons and glial cells.

Question 6

Indicate the roles served by each component of this control system by using the answer code.
Temperature-sensitive nerve cells monitor the body temperature and provide information about its status to a temperature-control centre in the hypothalamus, a part of the brain. The hypothalamus can bring about adjustments in body temperature by inducing shivering or sweating, among other things.
-hypothalamus

Accepted Answer

The hypothalamus serves as an integrator in this control system because it receives input from the temperature-sensitive nerve cells and can induce shivering or sweating to bring about adjustments in body temperature. It does not serve as a sensor, as that role belongs to the temperature-sensitive nerve cells, nor does it serve as an effector, as it does not directly carry out the adjustments in body temperature. It is also not the controlled variable, as it is actively adjusting the body temperature rather than being passively controlled.

Question 7

MATCHING
Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all).
-This tissue is distinguished by relatively few cells within an extracellular material.

Accepted Answer

Connective tissues are characterized by relatively few cells embedded within an extracellular matrix of fibers and ground substance.

Question 8

By using the following answer code (options may be used more than once or not at all), indicate whether the following physiological event represents
-rapid clotting of blood due to increasing levels of platelet activity at a site of vessel damage

Accepted Answer

Rapid clotting of blood is a classic example of positive feedback control, which amplifies the response to a stimulus instead of dampening it. In this case, when a vessel is damaged, platelets become activated and start releasing chemical messengers that attract more platelets to the site. These messengers also cause the activated platelets to change shape and become "sticky," making them adhere to each other and to the damaged vessel wall. This process continues until a clot forms and stops the bleeding. The positive feedback loop is only halted when the clotting process is complete and the platelets are no longer being stimulated to activate.

Question 9

Indicate the roles served by each component of this control system by using the answer code.
Temperature-sensitive nerve cells monitor the body temperature and provide information about its status to a temperature-control centre in the hypothalamus, a part of the brain. The hypothalamus can bring about adjustments in body temperature by inducing shivering or sweating, among other things.
-body temperature

Accepted Answer

The answer of Indicate the roles served by each component...

Question 10

MATCHING
Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all).
-The blood is this tissue type.

Accepted Answer

Blood is classified as connective tissue because it is made up of various cells suspended in an extracellular matrix (plasma).

Question 11

By using the following answer code (options may be used more than once or not at all), indicate whether the following physiological event represents
-increased blood flow into muscle tissue in response to a localized increase in carbon dioxide

Accepted Answer

Increased blood flow into muscle tissue in response to a localized increase in carbon dioxide is an example of intrinsic control, where the tissue itself regulates blood flow based on its own metabolic demands.

Quiz 1: The Foundation of Physiology

By using the following answer code (options may be used more than once or not at all) , indicate whether the following physiological event represents -increased cardiac activity to elevate blood pressure when systemic pressure is low

By using the following answer code (options may be used more than once or not at all) , indicate whether the following physiological event represents -the release of a hormone to lower blood calcium level when it gets too high

MATCHING Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all) . -The brain is primarily made of this tissue.

MATCHING Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all) . -This tissue is distinguished by relatively few cells within an extracellular material.

By using the following answer code (options may be used more than once or not at all) , indicate whether the following physiological event represents -rapid clotting of blood due to increasing levels of platelet activity at a site of vessel damage

MATCHING Indicate which tissue is being identified by using the answer code (options may be used more than once or not at all) . -The blood is this tissue type.

By using the following answer code (options may be used more than once or not at all) , indicate whether the following physiological event represents -increased blood flow into muscle tissue in response to a localized increase in carbon dioxide