Question 1

Which of the following is a primary function of the integumentary system?

Accepted Answer

Protection against environmental hazards

Question 2

Which pigment is primarily responsible for the color of the epidermis?

Accepted Answer

Melanin

Question 3

A patient presents with a burn that affects both the epidermis and the entire dermis. Which property of the skin is most compromised?

Accepted Answer

Sensory perception and temperature regulation

Question 4

Which type of gland is responsible for thermoregulation through sweat production?

Accepted Answer

Eccrine gland

Question 5

Which bone type is characterized by a dense outer layer and a spongy inner layer?

Accepted Answer

Long bone

Question 6

A fracture occurs in the diaphysis of the femur. Which part of the bone is affected?

Accepted Answer

Diaphysis

Question 7

Which equation best represents the relationship between force, lever arm, and torque in skeletal muscle movement?

Accepted Answer

$$T = F 	imes r$$

Question 8

Why do skeletal muscles appear striated under a microscope?

Accepted Answer

Alternating arrangement of actin and myosin filaments

Question 9

Which of the following is NOT a function of the skeletal system?

Accepted Answer

Transmission of nerve impulses

Question 10

Which structure is responsible for transmitting action potentials from the neuron to the muscle fiber?

Accepted Answer

Axon terminal

Question 11

Which division of the nervous system is responsible for the 'fight or flight' response?

Accepted Answer

Sympathetic division

Question 12

Gray matter in the spinal cord primarily consists of:

Accepted Answer

Neuron cell bodies and dendrites

Question 13

Which of the following best describes the order of a typical reflex arc?

Accepted Answer

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

Question 14

Which receptor type is responsible for detecting changes in blood pressure?

Accepted Answer

Baroreceptors

Question 15

A patient has damage to the postganglionic fibers of the parasympathetic division. Which physiological response is most likely impaired?

Accepted Answer

Stimulation of salivary gland secretion

Question 16

Which layer of the eye contains photoreceptors responsible for vision?

Accepted Answer

Retina

Question 17

Which property of spongy bone allows it to withstand multidirectional stress?

Accepted Answer

Trabecular network

Question 18

Which equation correctly describes the calculation of bone mineral density (BMD)?

Accepted Answer

$$BMD = \frac{mass}{volume}$$

Question 19

Which structure in the ear is primarily responsible for detecting rotational movement?

Accepted Answer

Semicircular canals

Question 20

A patient is unable to distinguish between red and green colors. Which type of cone cell is most likely affected?

Accepted Answer

Red cones

Anatomy & Physiology Study Guide: Key Topics and Concepts

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