Integumentary System

Question 1

epidermis

Answer 1

superficial (topmost) layer of skin composed of keratinized, stratified (layered), squamous (flat, scale-like) epithelium

Question 2

dermis

Answer 2

middle layer of skin that contains blood vessels, glands, hair follicles, and nerve endings

Question 3

hypodermis

Answer 3

lowermost, subcutaneous layer that contains connective and adipose tissues, as well as vessels, nerve endings, and other structures

Question 4

keratinization

Answer 4

replacement of cell contents with keratin protein as cells move to the surface of the epidermis

Question 5

keratin

Answer 5

insoluble protein that makes up hair and nails

Question 6

keratinocyte

Answer 6

most abundant epidermal cell filled with keratin from keratinization; protects skin and underlying tissues

Question 7

sebaceous gland

Answer 7

exocrine gland in the dermis associated with a hair follicle that secretes oil (sebum)

Question 8

hair follicle

Answer 8

structure of epithelium that surrounds the root of a hair

Question 9

nail

Answer 9

hard, keratinized epidermal cells; produced by the nail matrix

Question 10

sweat gland

Answer 10

gland in the dermis not attached to a hair follicle that secretes sweat