Question 1

Which of the following best describes the two main layers of the dermis?

Accepted Answer

The papillary layer and the reticular layer

Question 2

What is the primary function of the dermal papillae?

Accepted Answer

To increase the surface area for attachment between the dermis and epidermis

Question 3

Which component is NOT typically found in the dermis?

Accepted Answer

Keratinocytes

Question 4

Epidermal ridges, which contribute to fingerprints, are formed by:

Accepted Answer

The interaction between the dermal papillae and the overlying epidermis

Question 5

A patient presents with a burn that damages the dermal papillae but leaves the reticular layer mostly intact. Which of the following functions is most likely to be impaired?

Accepted Answer

Nutrient exchange between the dermis and epidermis

Question 6

Which of the following best explains why the dermis is able to provide structural strength to the skin?

Accepted Answer

It contains dense irregular connective tissue rich in collagen fibers

Question 7

Which of the following equations best represents the relationship between the surface area of the dermal papillae ($$A$$), the number of papillae ($$n$$), and the average area of each papilla ($$a$$)?

Accepted Answer

$$A = n 	imes a$$

Question 8

Which of the following scenarios would most likely result in a loss of unique epidermal ridge patterns (fingerprints)?

Accepted Answer

Destruction of the dermal papillae during severe burns

Question 9

Which of the following is a direct consequence of the presence of blood vessels in the dermis?

Accepted Answer

The skin can regulate body temperature through vasodilation and vasoconstriction

Question 10

A forensic scientist is analyzing a fingerprint left at a crime scene. Which anatomical structure is primarily responsible for the unique pattern observed?

Accepted Answer

Dermal papillae

Question 11

Which of the following best describes the role of collagen and elastic fibers in the dermis?

Accepted Answer

They provide tensile strength and elasticity to the skin

Question 12

If the papillary layer of the dermis is damaged, which of the following symptoms is most likely to occur?

Accepted Answer

Reduced sensitivity to touch

The Dermis: Structure, Functions, and Skin Markings

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