Question 1

Which statement best describes the difference between anatomy and physiology?

Accepted Answer

Anatomy is the study of the structure (form) of body parts and their relationships, while physiology is the study of the function of body parts.

Question 2

Which level of structural organization is immediately above the tissue level?

Accepted Answer

Organ level

Question 3

Why do the thin tissues in the lungs allow gases to cross rapidly?

Accepted Answer

Thin tissues decrease the distance gases must travel, facilitating rapid diffusion according to Fick's Law: $$J = -D \frac{dC}{dx}.$$

Question 4

Which of the following is an example of the principle 'structure determines function'?

Accepted Answer

The thin walls of alveoli in the lungs facilitate efficient gas exchange.

Question 5

A patient has a thickened alveolar membrane due to disease. What is the most likely physiological consequence?

Accepted Answer

Decreased rate of gas exchange due to increased diffusion distance, as described by $$J = -D \frac{dC}{dx}.$$

Question 6

Which of the following best describes the organ system level of organization?

Accepted Answer

A group of organs working together to perform a specific function.

Question 7

Which of the following is NOT a correct example of a life function?

Accepted Answer

Ignoring changes in the external environment.

Question 8

Which directional term correctly completes the sentence: 'The heart is _____ to the vertebral column.'

Accepted Answer

Question 9

Which anatomical position is described as lying face up?

Accepted Answer

Supine

Question 10

Which of the following best describes homeostasis?

Accepted Answer

The maintenance of a relatively stable internal environment despite continuous changes, involving dynamic equilibrium.

Question 11

In a negative feedback loop, what is the role of the effector?

Accepted Answer

To carry out the response that restores the variable to its normal range.

Question 12

Which of the following is an example of a positive feedback loop in the human body?

Accepted Answer

Blood clotting cascade.

Question 13

Which membrane directly covers the surface of organs within the ventral body cavity?

Accepted Answer

Visceral membrane

Question 14

A patient is experiencing a homeostatic imbalance. Which of the following is most likely occurring?

Accepted Answer

The body is unable to maintain stable internal conditions.

Question 15

Which of the following best explains why the pericardial cavity contains fluid?

Accepted Answer

To reduce friction between the heart and surrounding structures during contraction.

Question 16

Which of the following is the correct sequence of structural organization from simplest to most complex?

Accepted Answer

Cell, tissue, organ, organ system, organism

Question 17

Which of the following scenarios best illustrates a negative feedback mechanism?

Accepted Answer

When blood glucose rises, insulin is released to lower it back to normal.

Question 18

If the tissues in the lungs were thick instead of thin, which of the following would most likely occur?

Accepted Answer

Gas exchange would be insufficient to meet metabolic demands.

Question 19

Which of the following best describes the function of the control center in a feedback loop?

Accepted Answer

It receives input from the receptor and determines the appropriate response.

Question 20

Which of the following is a correct example of a directional term?

Accepted Answer

The thumb is lateral to the pinky finger.

Chapter 1: Organization of the Human Body – Introduction to Anatomy & Physiology

Study Guide - Practice Questions