Question 1

Which of the following correctly lists the hierarchy of structural organization in the human body from simplest to most complex?

Accepted Answer

Chemical, cellular, tissue, organ, organ system, organismal

Question 2

A patient is unable to maintain a stable internal temperature when exposed to cold environments. Which necessary life function is most directly impaired?

Accepted Answer

Homeostasis

Question 3

Which of the following best describes negative feedback in homeostasis?

Accepted Answer

A process that opposes or reduces the original stimulus

Question 4

A surgeon makes an incision that divides the body into right and left parts. Which anatomical plane is being used?

Accepted Answer

Sagittal

Question 5

Which body cavity contains the heart and is located within the mediastinum?

Accepted Answer

Pericardial cavity

Question 6

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Synthesizing proteins for export

Question 7

A scientist observes a membrane protein that spans the entire width of the plasma membrane. This protein is best classified as:

Accepted Answer

Integral protein

Question 8

Which of the following best describes the structure of the phospholipid bilayer in the fluid-mosaic model?

Accepted Answer

Hydrophilic heads facing outward, hydrophobic tails facing inward

Question 9

A patient with a ruptured serous membrane in the thoracic cavity is at risk for which of the following complications?

Accepted Answer

Friction between the lungs and chest wall

Question 10

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

Accepted Answer

Blood clotting after injury

Question 11

If a cell loses its ability to form tight junctions, which of the following is most likely to occur?

Accepted Answer

Uncontrolled passage of substances between adjacent cells

Question 12

Which body cavity would be directly affected by a traumatic brain injury?

Accepted Answer

Cranial cavity

Question 13

A researcher is studying the movement of oxygen across the plasma membrane. Which property of the membrane is most relevant to this process?

Accepted Answer

Selective permeability

Question 14

Which of the following best describes the function of desmosomes in cellular membranes?

Accepted Answer

Anchoring adjacent cells together to resist mechanical stress

Question 15

A patient is diagnosed with a disorder affecting the peritoneum. Which body cavity is primarily involved?

Accepted Answer

Abdominopelvic cavity

Question 16

Which of the following scenarios best illustrates the concept of boundaries as a necessary life function?

Accepted Answer

A cell membrane preventing entry of harmful substances

Question 17

If a cell's plasma membrane lost all of its integral proteins, which function would be most directly impaired?

Accepted Answer

Facilitated transport of ions and large molecules

Question 18

Which of the following best describes the relationship between the visceral and parietal layers of a serous membrane?

Accepted Answer

The parietal layer lines the body cavity wall, and the visceral layer covers the organ

Question 19

A patient with a genetic defect in gap junctions would most likely experience problems with which of the following?

Accepted Answer

Rapid electrical communication between cardiac muscle cells

Question 20

A cross-section of the body that separates the superior and inferior portions is made along which plane?

Accepted Answer

Transverse plane

Anatomy & Physiology Exam 1: Key Concepts and Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards