integumentary system (the skin)

Question 1

components of the integumentary system

Answer 1

skin, hair, and nails, as well as the sebaceous, sudoriferous, and ceruminous glands; also, hair follicles, apocrine and eccrine sweat glands, and blood vessels.

Question 2

Three layers of the skin

Answer 2

epidermis (outer), dermis (middle), and subcutaneous or hypodermis (inner layer)

Question 3

epidermis

Answer 3

made of dead skin cells on the outside and has an inner layer of living cells.

includes cells known as melanocytes that produce and distribute melanin.

Question 4

dermis

Answer 4

contains collagen, blood vessels, glands, hair follicles, and nerve endings.

Question 5

excretion

Answer 5

elimination of metabolic waste from the body

Question 6

ceruminous glands

Answer 6

structures that provide ear wax; only found in the dermis of the ear canal

Question 7

sebaceous glands

Answer 7

in the dermis that secrete sebum onto hair emerging from the hair follicle

Question 8

apocrine sweat gland

Answer 8

in the dermis that are in physical association with hair follicles, producing a secretion with an odor.

Question 9

eccrine sweat gland

Answer 9

throughout the dermis that secretes sweat; used to regulate body temperature.

Question 10

functions of the integumentary system

Answer 10

protection, excretion, homeostasis

produces vitamin D when UV light hits the skin.

Question 11

homeostasis and the integumentary system

Answer 11

blood vessels dilate when the body is warm and carry more blood closer to the skin’s surface.

blood vessels constrict when the body is cold in a process called cutaneous vasoconstriction (reduces blood flow to the skin). also causes chills.