Chapter 6 - Integumentary System - Part 2 Flashcards Preview

Anatomy & Physiology 101 > Chapter 6 - Integumentary System - Part 2 > Flashcards

Flashcards in Chapter 6 - Integumentary System - Part 2 Deck (70)
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1

Accessory structures of the skin originate from the epidermis and include...

Nails, hair follicles, and skin glands

2

Each nail consists of a...

Nail plate and a nail bed`

3

The whitish half-moon area is called the...

Lunula

4

Lunula is the most active ____ of the nail...

Growth region

5

Nails grow from epithelial cells that...

Divide and become keratinized

6

At any time, 90% of hair is in the ____ phase.

Growth

7

Each hair develops from a group of epidermal cells at the base of a tubelike depression called a...

Hair follicle

8

The hair follicle extends from the surface into the dermis and contains the...

Hair root

9

The hair root is the portion of hair that is...

Embedded in the skin

10

A hair is composed of dead...

Epidermal cells

11

Genes determine hair colors by directing the type and amount of ____ that epidermal melanocytes produce.

Pigment

12

Androgenetic alopecia is also known as...

Pattern baldness

13

Muscle that attaches to each hair follicle, causes hair to stand up when cold or nervous...

Arrector pili muscle

14

Contain groups of specialized epithelial cells and are usually associate with hair follicles...

Sebaceous glands

15

Sebaceous glands release sebum and are known as...

Holocrine glands

16

Helps keep hairs soft, pliable, and smooth...

Sebum

17

Each of this gland consists of a tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer.

Sweat gland

18

The most numerous sweat glands are called...

Eccrine glands

19

Eccrine glands respond to...

Body temperature

20

Sweat is mostly water, but it also contains small amounts of salts and wastes such as...

Urea and uric acid

21

Sweating is also a...

Secretory function

22

Sweat glands that develop a scent as skin bacteria metabolize them are called...

Apocrine glands

23

Apocrine sweat glands become active at puberty and can wet certain areas of the skin when a person is...

Emotionally upset, frightened, or in pain

24

Blackheads and whiteheads are collectively known as...

Comedones

25

Heat is a product of...

Cellular metabolism

26

The major heat producers in the body are the more active cells, such as the...

Skeletal muscle cells and cardiac muscle cells and cells of the liver

27

When warm blood reaches the ____, the _____ signals muscles in the walls of the dermal blood vessels to relax.

Hypothalamus

28

As dermal blood vessels dilate (vasodilation), more blood enters them, and some of the heat the blood...

Escapes to the outside

29

At the same time as vasodilation, deeper blood vessels contract (vasoconstriction), diverting blood...

To the surface (skin reddens)

30

The primary means of body heat loss...

Radiation