Question 1

Which of the following best describes the primary function of the epidermis in the integumentary system?

Accepted Answer

It provides a waterproof barrier and protects underlying tissues from pathogens, UV radiation, and dehydration.

Question 2

A patient presents with a burn that destroys both the epidermis and the entire dermis, resulting in loss of sensation and a white, leathery appearance. Which type of burn is this, and what is the most immediate threat to life?

Accepted Answer

Third-degree burn; dehydration

Question 3

Which of the following equations best represents the calculation of the percentage of body surface area affected by burns using the Rule of Nines?

Accepted Answer

$$Total\ Burned\ Area\ (\%) = (Area\ of\ Head\ (9\%) + Area\ of\ Each\ Arm\ (9\%\ each) + Area\ of\ Each\ Leg\ (18\%\ each) + Area\ of\ Anterior\ Trunk\ (18\%) + Area\ of\ Posterior\ Trunk\ (18\%))$$

Question 4

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

Accepted Answer

Blood cell production

Question 5

A patient with osteoporosis is at increased risk for which of the following?

Accepted Answer

Pathological bone fractures due to decreased bone mass

Question 6

Which of the following best describes the difference between synovial and cartilaginous joints?

Accepted Answer

Synovial joints contain a fluid-filled cavity, while cartilaginous joints are united by cartilage and lack a cavity.

Question 7

Which of the following structures is responsible for the production of sebum, and what is its primary function?

Accepted Answer

Sebaceous gland; lubricating and waterproofing the skin and hair

Question 8

A 25-year-old athlete suffers a torn anterior cruciate ligament (ACL) in the knee. Which type of synovial joint is the knee, and what movement does it primarily allow?

Accepted Answer

Hinge; flexion and extension

Question 9

Which of the following best explains why elderly individuals are more prone to developing osteomalacia?

Accepted Answer

Reduced synthesis of vitamin D, leading to impaired calcium absorption

Question 10

Which of the following equations correctly represents the relationship between bone mass, bone formation, and bone resorption during bone remodeling?

Accepted Answer

$$\Delta Bone\ Mass = Bone\ Formation - Bone\ Resorption$$

Question 11

Which of the following is a correct pairing of a joint type and its example?

Accepted Answer

Symphysis – pubic symphysis

Question 12

A patient is diagnosed with Paget’s disease. Which of the following best describes the underlying pathology?

Accepted Answer

Excessive bone resorption followed by disorganized bone formation

Question 13

Which of the following best describes the role of the skin as a blood reservoir?

Accepted Answer

The skin can hold up to 5% of the body’s blood volume, which can be redirected to other organs as needed.

Question 14

Which of the following is a function of cutaneous sensation in the integumentary system?

Accepted Answer

Sensing touch, pressure, pain, and temperature

Question 15

Which of the following best describes the microscopic anatomy of compact bone?

Accepted Answer

It consists of osteons (Haversian systems) with concentric lamellae surrounding a central canal.

Question 16

A child with rickets is likely to have which of the following laboratory findings?

Accepted Answer

Decreased serum vitamin D, leading to impaired bone mineralization

Question 17

Which of the following best explains why synovial joints are more susceptible to dislocation than fibrous joints?

Accepted Answer

Synovial joints have a fluid-filled cavity and greater range of motion, making them less stable.

Question 18

Which of the following best describes the process of endochondral ossification during bone development?

Accepted Answer

Bone replaces a hyaline cartilage model, beginning at the primary ossification center.

Question 19

Which of the following is a correct statement about the structure of hair?

Accepted Answer

The hair follicle is a structure that extends from the epidermis into the dermis and surrounds the root of the hair.

Question 20

A patient with a genetic defect in collagen synthesis is most likely to have which of the following skeletal problems?

Accepted Answer

Brittle bones prone to fracture due to impaired bone matrix formation

Anatomy & Physiology Study Notes: Integumentary System, Skeletal System, and Joints

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