Question 1

Which of the following best describes the primary function of nervous tissue in the human body?

Accepted Answer

Specialized to transmit information via electrical signals for communication and control.

Question 2

Which of the following is NOT a defining characteristic of epithelial tissue?

Accepted Answer

Specialized for contraction and movement.

Question 3

A patient loses a significant amount of blood in an accident. Which body fluid compartment is most directly affected, and what is its approximate percentage of total blood volume?

Accepted Answer

Plasma; approximately 55-60%

Question 4

Which of the following is the correct hierarchical order of structural organization in the human body, from smallest to largest?

Accepted Answer

Chemical level → Cell → Tissue → Organ → Organ system → Organism

Question 5

Which equation correctly represents the distribution of total body water (TBW) in the human body?

Accepted Answer

$$TBW = ICF + ECF$$

Question 6

Which of the following statements about homeostasis is TRUE?

Accepted Answer

Homeostasis is maintained primarily by regulating the composition, temperature, and volume of the extracellular fluid (ECF).

Question 7

Negative feedback loops are essential for homeostasis because:

Accepted Answer

They move the response in the opposite direction of the stimulus, stabilizing regulated variables.

Question 8

Which of the following is an example of an exocrine gland function?

Accepted Answer

Secretion of sweat into a duct leading to the skin surface.

Question 9

Which tissue type is most abundant and diverse in the human body, and what is its primary function?

Accepted Answer

Connective tissue; support and linking together other tissues

Question 10

During exercise, which regulated variables are most likely to be challenged and require homeostatic adjustment?

Accepted Answer

Blood glucose, body temperature, and plasma volume

Question 11

Which of the following best describes the role of semipermeable membranes in the body?

Accepted Answer

They separate fluid compartments and regulate the movement of specific molecules to maintain homeostasis.

Question 12

Which of the following is a correct example of a positive feedback loop in physiology?

Accepted Answer

Estrogen secretion stimulating further LH secretion during the menstrual cycle.

Question 13

Which equation best represents the relationship between the regulated variable, sensor, integration center, and effector in a negative feedback loop?

Accepted Answer

$$	ext{Regulated Variable} \xrightarrow{	ext{Sensor}} 	ext{Integration Center} \xrightarrow{	ext{Effector}} 	ext{Response}$$

Question 14

Which of the following statements about organ systems is TRUE?

Accepted Answer

Organ systems can overlap because some organs are shared between systems.

Question 15

Which of the following is a function of neuroglia (glial cells) in nervous tissue?

Accepted Answer

Support neurons to keep them healthy and protected.

Question 16

Which of the following is TRUE regarding the extracellular fluid (ECF) in the human body?

Accepted Answer

ECF surrounds all cells and is the main fluid involved in homeostasis.

Question 17

Which of the following is a correct example of how form follows function in tissues?

Accepted Answer

Muscle tissue is composed of cells specialized for contraction, allowing movement.

Question 18

Which of the following is a plausible consequence if the body fails to maintain homeostasis of the extracellular fluid (ECF)?

Accepted Answer

Disruption of ECF composition, temperature, or volume can lead to systemic dysfunction and disease.

Question 19

Which of the following best describes the difference between absorption and reabsorption in physiology?

Accepted Answer

Absorption refers to materials being transported from the lumen into the bloodstream, while reabsorption refers to materials being transported back into the bloodstream after initial filtration.

Introduction to Physiology & The Cell: Structure and Function

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