Question 1

Many people develop "mountain sickness" when they travel to high altitudes, developing headaches, difficulty sleeping, and nausea from the lack of oxygen. Which process fails to occur in people who continue to have mountain sickness after being at high altitude for a few days?

Accepted Answer

Acclimatization is the process by which the body adjusts to changes in its environment, such as high altitude, over a period of days or weeks. If someone continues to experience mountain sickness, it indicates that acclimatization has not occurred.

Question 2

Match between columns
                        Premises: circulatory system
digestive system
excretory system
reproductive system
nervous system
integumentary system
muscular system
endocrine system
skeletal system
lymphatic system

Accepted Answer

The Answer of provides leverage for body movements and passes is...

Question 3

Match between columns
                        Premises: axon terminals
axon
nucleus
dendrites
cell body

Accepted Answer

The Answer of A and E and B and C is...

Question 4

Which component of the accompanying scenario would be considered the stimulus?

Accepted Answer

In this scenario, the increased glucose levels act as the stimulus that triggers the body's response, such as the release of insulin and subsequent processes like glycogen and fat synthesis.

Question 5

The cell body of a neuron propagates electrical signals to the axon terminals.

Accepted Answer

The cell body of a neuron integrates signals and the axon propagates electrical signals to the axon terminals.

Question 6

Which component of the accompanying scenario would be considered the compensatory response?

Accepted Answer

Glycogen and fat synthesis are compensatory responses to increased glucose levels.

Question 7

Which scenario is an example of positive feedback?

Accepted Answer

Positive feedback amplifies a response to achieve an outcome, as seen in choice C, where platelet activation leads to further platelet activation until a clot forms, effectively stopping bleeding.

Question 8

Tight junctions between muscle cells help muscle tissue function as a unit.

Accepted Answer

Tight junctions are characteristic of epithelial cells, where they help to create a barrier to prevent the passage of materials between cells. In muscle tissue, it is the gap junctions, not tight junctions, that allow muscle cells to function as a unit by facilitating the direct transfer of ions and small molecules between cells, enabling coordinated muscle contraction.

Question 9

Why are both blood and bone considered connective tissue?

Accepted Answer

The answer of Why are both blood and bone considered...

Question 10

Which component of the accompanying scenario would be considered the sensor?

Accepted Answer

The potassium ion channel is the sensor because it detects the change in glucose levels and triggers the release of insulin.

Question 11

The lymphatic system is composed of lymph nodes and ducts, the spleen, thymus, bone marrow, and white blood cells, all of which are central players in defending the body against microorganisms and viruses.

Accepted Answer

The answer of The lymphatic system is composed of lymph...

Question 12

The regulation of blood pressure is an example of local homeostatic controls .

Accepted Answer

The regulation of blood pressure is primarily an example of systemic homeostatic control, involving the heart, blood vessels, and neuroendocrine system to maintain blood pressure throughout the entire body, rather than being regulated locally.

Question 13

Which process would be considered a biorhythm?

Accepted Answer

Seasonal depression manifesting every winter is considered a biorhythm because it is a recurring cycle in the body that is influenced by changes in the environment, specifically, seasonal changes.

Question 14

Which component of the accompanying scenario would be considered the effector?

Accepted Answer

Effector components in a physiological system are organs or cells that act in response to a signal to bring about a change. In the context of insulin release and its effects, the liver and muscle act as effectors by responding to insulin to store glucose as glycogen and fat, thus helping to regulate blood glucose levels.

Question 15

In animals, the functions of organ systems are integrated and coordinated to accomplish five main tasks that are vital for survival. List these tasks.

Accepted Answer

The answer of In animals, the functions of organ systems...

Question 16

For changes that occur in response to environmental conditions, changes in gene expression are most likely due to ____, while changes in DNA sequence are more likely due to ____.

Accepted Answer

The answer of For changes that occur in response to...

Question 17

A response to change in the internal/external environment that intensifies the change is called ____ feedback.

Accepted Answer

The answer of A response to change in the internal/external...

Question 18

Skeletal muscle is arranged in highly ordered parallel units, giving the tissue a banded appearance under a microscope.

Accepted Answer

The answer of Skeletal muscle is arranged in highly ordered...

Question 19

Distinguish between a circadian clock and circadian rhythm.

Accepted Answer

The answer of Distinguish between a circadian clock and circadian...

Question 20

Due to disruptions in circadian rhythms, when are heart attacks and strokes most likely to occur?

Accepted Answer

The answer of Due to disruptions in circadian rhythms, when...

Quiz 38: Introduction to Animal Organization and Physiology