Question 1

Which of the following best describes the sequence of structural organization in the human body, from simplest to most complex?

Accepted Answer

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

Question 2

A patient is experiencing a rapid drop in blood pressure. The body responds by increasing heart rate and constricting blood vessels to restore normal pressure. This is an example of which type of homeostatic feedback mechanism?

Accepted Answer

Negative feedback

Question 3

Which of the following directional terms correctly describes the relationship between the sternum and the heart?

Accepted Answer

The sternum is anterior to the heart.

Question 4

Which of the following best explains why proteins lose their function when denatured?

Accepted Answer

Denaturation alters the three-dimensional shape, disrupting the active site.

Question 5

A solution has a pH of 5. Which of the following statements is correct?

Accepted Answer

The solution is acidic and has a high concentration of H$$^+$$ ions.

Question 6

Which of the following best describes the function of the Golgi apparatus in a typical cell?

Accepted Answer

It modifies, sorts, and packages proteins for secretion or delivery to other organelles.

Question 7

A cell is placed in a hypotonic solution. What will most likely happen to the cell, and why?

Accepted Answer

The cell will swell and possibly burst because water moves in by osmosis.

Question 8

During protein synthesis, what is the role of tRNA?

Accepted Answer

tRNA brings specific amino acids to the ribosome based on the mRNA codon sequence.

Question 9

Which of the following tissues is specialized for rapid communication and control of body functions?

Accepted Answer

Nervous tissue

Question 10

A burn patient is evaluated using the 'rule of nines.' What is the primary purpose of this rule?

Accepted Answer

To estimate the percentage of body surface area affected by burns

Question 11

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 12

Which of the following is an example of a synovial joint, and what movement does it allow?

Accepted Answer

Shoulder joint; allows flexion, extension, abduction, adduction, and rotation

Question 13

Which of the following best describes the sequence of events at the neuromuscular junction leading to muscle contraction?

Accepted Answer

Action potential → Ca$$^{2+}$$ influx → ACh release → ACh binds receptors → Na$$^+$$ influx → Sarcolemma depolarization

Question 14

Which metabolic pathway produces the greatest amount of ATP during aerobic respiration in muscle cells?

Accepted Answer

Electron transport chain

Question 15

A patient presents with a fracture in the diaphysis of the femur. Which part of the bone is affected?

Accepted Answer

The shaft of the bone

Question 16

Which of the following best describes the difference between the central and peripheral nervous systems?

Accepted Answer

The central nervous system includes the brain and spinal cord; the peripheral nervous system includes all nerves outside the brain and spinal cord.

Question 17

Which of the following best explains the difference between an excitatory post-synaptic potential (EPSP) and an inhibitory post-synaptic potential (IPSP)?

Accepted Answer

EPSPs bring the membrane potential closer to threshold, while IPSPs move it further from threshold.

Question 18

Which of the following is a function of the hypothalamus?

Accepted Answer

Regulation of body temperature and hunger

Question 19

Which of the following best describes the function of the dorsal root ganglia in the spinal cord?

Accepted Answer

They contain the cell bodies of sensory neurons.

Question 20

A person accidentally touches a hot stove and quickly withdraws their hand. Which of the following correctly lists the sequence of components in the reflex arc involved in this response?

Accepted Answer

Receptor → Sensory neuron → Integration center → Motor neuron → Effector

Anatomy & Physiology I: Comprehensive Study Guide (Chapters 1–13)

Study Guide - Practice Questions

Study Guide - Flashcards