Question 1

Which of the following best describes the principle of homeostasis in human physiology?

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions.

Question 2

A patient presents with a third-degree burn on their forearm. Why is this type of burn often not initially painful?

Accepted Answer

Because the burn destroys nerve endings in the affected area.

Question 3

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

Accepted Answer

Regulation of blood glucose levels by insulin.

Question 4

Which cell type is primarily responsible for producing melanin in the epidermis?

Accepted Answer

Melanocyte

Question 5

A person is exposed to cold temperatures and their arrector pili muscles contract. What is the physiological result of this contraction?

Accepted Answer

Hair stands up, causing 'goosebumps' to help trap air and retain heat.

Question 6

Which of the following best describes the difference between thick skin and thin skin?

Accepted Answer

Thick skin contains a stratum lucidum and lacks hair follicles, while thin skin does not have a stratum lucidum and contains hair follicles.

Question 7

Which of the following equations correctly represents the relationship between surface area ($$A$$), volume ($$V$$), and the rate of diffusion ($$R) in $$cells?

Accepted Answer

$$R \propto \frac{A}{V}$$

Question 8

Which of the following is a function of the hypodermis?

Accepted Answer

It stores energy in the form of fat and provides insulation.

Question 9

Which of the following best describes the role of the basement membrane in epithelial tissue?

Accepted Answer

It anchors the epithelium to underlying connective tissue and regulates exchange of molecules.

Question 10

A neuron receives electrical signals at which part of its structure?

Accepted Answer

Dendrites

Question 11

Which of the following is the primary determinant of skin color in humans?

Accepted Answer

The amount and type of melanin produced by melanocytes.

Question 12

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

Accepted Answer

Release of oxytocin during childbirth to intensify uterine contractions.

Question 13

Which of the following best describes the function of tight junctions in epithelial tissue?

Accepted Answer

They prevent the passage of substances between adjacent cells.

Question 14

Which connective tissue type is specialized for energy storage and insulation?

Accepted Answer

Adipose tissue

Question 15

Which of the following glands is most likely to be found in the axillary (armpit) region and is influenced by sex hormones during puberty?

Accepted Answer

Apocrine sweat gland

Question 16

Which of the following best describes the function of sebum?

Accepted Answer

It lubricates and waterproofs the skin and hair.

Question 17

Which of the following is a correct sequence of the levels of structural organization in the human body, from simplest to most complex?

Accepted Answer

Chemical, cellular, tissue, organ, organ system, organism

Question 18

A histology slide shows a tissue with striated, multinucleated cells under voluntary control. Which tissue type is this?

Accepted Answer

Skeletal muscle

Question 19

Which of the following best explains why vitamin D synthesis is important for the integumentary system?

Accepted Answer

It enables the absorption of calcium for bone health.

Question 20

A patient has a deficiency in collagen production. Which tissue type would be most affected?

Accepted Answer

Connective tissue

Anatomy & Physiology: Intro, Histology, and Integumentary System Study Guide

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