Question 1

Which cell type in the epidermis is primarily responsible for producing keratin and providing the skin with its protective properties?

Accepted Answer

Keratinocytes

Question 2

Melanocytes are found in which layer of the epidermis, and what is their main function?

Accepted Answer

Stratum basale; producing melanin

Question 3

Which structure in the dermis is responsible for our ability to grip certain kinds of surfaces and is genetically unique to each individual?

Accepted Answer

Friction ridges

Question 4

Keratinocytes are held together by which type of cell junction for strength, and which junction helps prevent water loss?

Accepted Answer

Desmosomes for strength; tight junctions for water loss

Question 5

A patient presents with a burn that affects only the epidermis, causing redness and pain but no blisters. What type of burn is this?

Accepted Answer

First-degree burn

Question 6

Which type of skin cancer is most dangerous due to its high metastatic potential and resistance to chemotherapy?

Accepted Answer

Melanoma

Question 7

A mole is evaluated for skin cancer using the ABCD rule. What does the 'B' stand for, and why is it important?

Accepted Answer

Border; irregular edges may indicate malignancy

Question 8

Which layer of the dermis is made up of areolar connective tissue and contains dermal papillae?

Accepted Answer

Papillary layer

Question 9

Hair color is determined by the type and amount of melanin present. Which condition results from reduced melanin production combined with air bubbles in the hair shaft?

Accepted Answer

Gray or white hair

Question 10

Which of the following best describes cleavage lines in the skin?

Accepted Answer

They run longitudinally in the skin of the limbs and in circular patterns around the neck and trunk

Question 11

A patient has a third-degree burn covering 18% of their body surface area. Using the Rule of Nines, which region is most likely affected?

Accepted Answer

One entire leg

Question 12

Which of the following is TRUE regarding the cuticle of the hair?

Accepted Answer

It is heavily keratinized, providing strength and preventing matting

Question 13

Which cell type in the epidermis functions as a sensory receptor for touch?

Accepted Answer

Tactile epithelial cells (Merkel cells)

Question 14

Why is early detection of melanoma crucial for survival?

Accepted Answer

Melanoma is highly metastatic and can spread quickly

Question 15

Which of the following best describes the function of dendritic cells in the epidermis?

Accepted Answer

They ingest foreign substances and help activate immune responses

Question 16

A patient presents with a skin lesion that is irregular in shape, has uneven color, and a diameter of 7 mm. According to the ABCD rule, which feature is most concerning for melanoma?

Accepted Answer

Diameter greater than 6 mm

Question 17

Which type of skin cancer arises from keratinocytes of the stratum spinosum and is most likely to metastasize if not treated?

Accepted Answer

Squamous cell carcinoma

Question 18

Which hair shaft shape is associated with curly hair?

Accepted Answer

Flat and ribbonlike

Question 19

Which layer of the dermis is made up of dense irregular connective tissue and provides structural support?

Accepted Answer

Reticular layer

Question 20

A patient with a second-degree burn will most likely experience which of the following symptoms?

Accepted Answer

Blisters and damage to both epidermis and upper dermis

Study Notes: The Integumentary System (Anatomy & Physiology)

Guida di studio - Domande di pratica

Study guide - Flashcard