Question 1

Which type of connective tissue is most abundant in the reticular layer of the dermis?

Accepted Answer

Dense irregular connective tissue

Question 2

A patient presents with a loss of sensation for light touch on their fingertips. Which cutaneous receptor is most likely damaged?

Accepted Answer

Tactile (Meissner) corpuscle

Question 3

Which anatomical feature of the dermis is responsible for the formation of fingerprints?

Accepted Answer

Dermal ridges in the papillary layer

Question 4

Which of the following best describes the function of the hypodermis?

Accepted Answer

Anchors skin to underlying tissues and provides insulation

Question 5

A histological slide shows a region of the skin with abundant collagen and elastic fibers, numerous sebaceous glands, and deep pressure receptors. Which layer is being observed?

Accepted Answer

Reticular layer of the dermis

Question 6

Which receptor is primarily responsible for detecting high-frequency vibration and deep pressure?

Accepted Answer

Lamellated (Pacinian) corpuscle

Question 7

If a person suffers a burn that destroys the papillary layer but leaves the reticular layer intact, which of the following functions would be most affected?

Accepted Answer

Detection of light touch and pressure

Question 8

Which structure in the dermis is most closely associated with the sensation of skin distortion and sustained pressure?

Accepted Answer

Bulbous (Ruffini) corpuscle

Question 9

Which equation best represents the relationship between the density of tactile corpuscles ($$n) $$and the sensitivity to light touch ($$S) in a $$given area of skin?

Accepted Answer

$$S \propto n$$

Question 10

A patient complains of chronic itch and pain in a localized area of skin. Which receptor type is most likely involved?

Accepted Answer

Free nerve endings

Question 11

Which layer of the dermis contains the cutaneous plexus, and what is its primary function?

Accepted Answer

Reticular layer; supplies blood to deeper dermal structures

Question 12

Which of the following is NOT a function of the hypodermis?

Accepted Answer

Production of melanin

Question 13

Cleavage lines in the skin are important for surgical incisions because they:

Accepted Answer

Reflect the orientation of collagen fiber bundles in the reticular layer

Question 14

Which equation would you use to estimate the total energy stored ($$E) in $$the hypodermis, given the mass of adipose tissue ($$m) $$and the energy density of fat ($$d$$)?

Accepted Answer

$$E = m 	imes d$$

Question 15

Which of the following best explains why the papillary layer is highly vascular?

Accepted Answer

It supplies nutrients and oxygen to the epidermis

Question 16

A patient has a genetic mutation affecting the formation of friction ridges. Which function would be most impaired?

Accepted Answer

Ability to grip objects securely

Question 17

Which of the following cell types is NOT typically found in the dermis?

Accepted Answer

Keratinocytes

Question 18

Which sensory receptor is most likely to be activated when a hair on your arm is gently moved?

Accepted Answer

Hair follicle receptor (root hair plexus)

Question 19

Which layer of the skin is primarily responsible for shock absorption?

Accepted Answer

Hypodermis

Question 20

Which of the following best describes the arrangement of collagen fibers in the reticular layer of the dermis?

Accepted Answer

Irregularly arranged to provide multidirectional strength

The Integumentary System: Structure and Function of the Dermis

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