Question

question 13 (1 point)
cracks in the skin that penetrate the dermis layer, such as chapped hands or lips, are ____
a fissures
b tissues
c tubercles
d tumors

question 14 (1 point)
all natural hair color is the result of pigment called ____
a tissue
b sebum
c proteins
d melanin

question 15 (1 point)
small, cone - shaped elevations at the bottom of hair follicles are known as ____
a papules
b dermal papillae
c sensory nerve fibers
d melanocytes

Explanation:

Question 13

Fissures are cracks in the skin that go through the dermis, like chapped hands/lips. Tissues are groups of cells, tubercles are small rounded growths, tumors are abnormal growths—none match the description of skin cracks.

Melanin is the pigment responsible for natural hair color. Tissue is a cell group, sebum is an oily substance, proteins are building blocks but not the pigment for hair color.

Dermal papillae are small, cone - shaped elevations at the base of hair follicles. Papules are skin lesions, sensory nerve fibers transmit signals, melanocytes produce melanin—they don't match the description of elevations at hair follicle bottoms.

Answer:

a. fissures

Question 14