Anatomy & Physiology

Question 1

Anagen

Answer 1

The growth phase in the hair cycle in which a new hair is synthesized.

Question 2

Apocrine

Answer 2

Glands in the axillae and groin that secrete sweat and substances that produce body odor when contaminated with bacteria

Question 3

Axillae

Answer 3

Armpits

Question 4

Basal zone

Answer 4

Live layer of dividing cells that continuously change and push upward

Question 5

Catagen

Answer 5

The transition stage of the hair growth cycle. The period between the growth and resting phases.

Question 6

Club hair

Answer 6

Hair that has lost its root structure and that when she’s from the follicle, exhibits a round shape

Question 7

Collegenous

Answer 7

Fiber made of protein that gives skin its form and strength

Question 8

Connective tissue

Answer 8

Fibrous tissue that binds, protects, cushions, and supports the various parts of the body

Question 9

Constriction

Answer 9

Process of narrowing

Question 10

Cortex

Answer 10

Middle layer of the hair. A fibrous protein core formed by elongated cells containing melanin

Question 11

Cuticle

Answer 11

Outermost layer of hair consisting of one overlapping layer of transparent, scale-like cells

Question 12

Dermal papilla

Answer 12

Small, cone shaped indentation at the base of the hair follicle that fits into the hair bulb. Also called the hair papilla

Question 13

Dilation

Answer 13

Process of widening or expanding

Question 14

Eccrine

Answer 14

Glands throughout the skin that excrete mainly water and salt

Question 15

Eleidin

Answer 15

Clear, lifeless matter deposited in the form of minute keratohyalin granules in the protoplasm of living cells

Question 16

Excretion

Answer 16

Act of discharging waste matter from tissues or organs

Question 17

External root sheath

Answer 17

The inner side of the follicular canal which is made of horny epidermal tissue

Question 18

Follicular canal

Answer 18

The depression in the skin that houses the entire pilosebaceous unit

Question 19

Germinal zone

Answer 19

The layer of the skin where cells divide

Question 20

Hair follicle bulb

Answer 20

The bulbous base of the hair follicle that houses the dermal papilla

Question 21

Hair matrix

Answer 21

The germinating center of the hair follicle where mitotic activity occurs

Question 22

Horny zone

Answer 22

The outermost portion of the epidermis

Question 23

Medulla

Answer 23

The innermost layer of the hair. Composed of round cells. Often absent in fine hair

Question 24

Meissner’s corpuscles

Answer 24

Nerve endings in the skin that are sensitive to touch

Question 25

Melanocytes

Answer 25

Melanin forming cells

Question 26

Mitosis

Answer 26

The process by which a cell divide into two new daughter cells

Question 27

Pacinian's corpuscles

Answer 27

Nerve endings found deep in the skin that are receptive to pressure

Question 28

Papillae

Answer 28

Cone shaped; fingerlike projections that protrude into the epidermis

Question 29

Pheromones

Answer 29

Chemicals produced by humans and other animals that, when secreted, influence other members of the same species

Question 30

Pilosebaceous unit

Answer 30

The entire hair appendage including the sebaceous gland and arrector pili muscle

Question 31

Secretion

Answer 31

The process of producing and discharging substances from glands

Question 32

Stratified epithelium

Answer 32

Layers of tissue that lack blood vessels. Acts as a surface barrier

Question 33

Stratum basale

Answer 33

Single layer that is the deepest layer of the epidermis

Question 34

Stratum corneum

Answer 34

Outermost layer of dead skin cells

Question 35

Stratum germinativum

Answer 35

The lower level of the epidermis where cell division occurs

Question 36

Stratum granulosum

Answer 36

The granular layer of skin found at the bottom of the horny zone

Question 37

Stratum lucidum

Answer 37

Clear, transparent layer of the epidermis. Found under the stratum corneum

Question 38

Stratum mucosum

Answer 38

Single cell layer of the epidermis found above the stratum germinativum

Question 39

Stratum spinosum

Answer 39

The superior layer of the stratum germinativum. Names for its shape and spiny, thorn like protrusions. Also known as the prickly cell layer

Question 40

Subcutaneous tissue

Answer 40

Fatty layer beneath the dermis that gives the body smoothness and contour. Also called adipose tissue. Contains fat as an energy source and acts as a protective cushion for the outer skin

Question 41

Subcutis

Answer 41

A layer of subcutaneous tissue

Question 42

Telogen

Answer 42

The resting phase of the hair follicle in its growth cycle

Question 43

Terminal hair

Answer 43

Hair found on the scalp, arms, legs, axillae, and pubic area (post puberty)

Question 44

Tyrosine

Answer 44

And amino acid present in melanocytes

Question 45

Vellus

Answer 45

Fine, short hair with no pigment. Found mainly on women's faces. Also referred to as peach fuzz

Question 46

What system controls the sudoriferous glands?

Answer 46

The sympathetic nervous system