Unit 2 Glands, Nails And Hair

Question 1

What are two types of glands in the integumentary system?

Answer 1

1. Sebaceous (oil) glands
2. Sudoriferous (sweat) glands

Question 2

Which gland in the skin is associated with hair follicles?

Answer 2

Sebaceous (oil)

Question 3

Which type of gland is widespread throughout the skin?

Answer 3

Sudoriferous (sweat)

Question 4

What are the two types of sudoriferous (sweat) glands?

Answer 4

1. Merocrine (eccrine)
2. Apocrine

Question 5

Which type of sweat gland is found almost exclusively in the armpit and genital areas?

Answer 5

Apocrine

Question 6

Which type of sweat gland is most abundant?

Answer 6

Merocrine (eccrine)

Question 7

Which type of sweat gland is found in the palms, soles of the feet, and forehead

Answer 7

Merocrine (eccrine)

Question 8

What is sebum?

Answer 8

Globules of fatty material produced by the holocrine (sebaceous) gland that accumulate, swell and burst in the skin cells.

Question 9

What does sebum do?

Answer 9

Keeps the hair and skin soft, pliable and waterproof

Question 10

What causes acne?

Answer 10

Overactive and inflamed glands in some body regions become plugged, producing blackheads and pimples

Question 11

What is the protective covering on the ends of fingers and toes?

Answer 11

Nail

Question 12

What are the parts of the nail?

Answer 12

1. Body
2. Root
3. Nail bed
4. Lunula
5. Nail fold
6. Eponychium (cuticle)

Question 13

What part of the nail is formed on the nail bed and protects the tips of our fingers and toes?

Answer 13

Nail body

Question 14

What is the matrix of keratinized cells that become the nail body called?

Answer 14

Nail root

Question 15

What is the specialed structure of the epidermis found at the tips of fingers and toes called?

Answer 15

Nail bed

Question 16

What is the whitish, thickended half-moon shape at the bae of the nail called?

Answer 16

Lunula

Question 17

What is the most actively growing part of the nail called?

Answer 17

Lunula

Question 18

What part of the nail overlaps the nail on the sides and helps anchor the nail!

Answer 18

Nail fold

Question 19

What is the nail fold at the proximal end of the nail body called?

Answer 19

Eponychium (cuticle)

Question 20

Which skin surfaces do not contain hair?

Answer 20

Palms
soles of the feet
lips
nipples
parts of the external reproductive organs

Question 21

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

Answer 21

Hair follicle

Question 22

The part of the hair that is anchored in the follicle and lies below the skin is called the _____________.

Answer 22

Hair root

Question 23

The end of the hair root found deep in the defmis is called the ____________.

Answer 23

Hair bulb

Question 24

The hair bulb is nourished from dermal blood vessels in the ___________.

Answer 24

Hair papilla

Question 25

The part of the hair that extends outward from the skin is called the __________.

Answer 25

Hair shaft

Question 26

What is the muscle attached to each hair follicle called?

Answer 26

Arrector pili muscle

Question 27

How do genes determine hair color?

Answer 27

By directing the type and amount of pigment that epidermal melanocytes produce.

Question 28

What causes dark hair?

Answer 28

More brownish-black eumelanin

Question 29

What causes blonde or red hair?

Answer 29

More reddish-yellow pheomelanin

Question 30

What causes white hair?

Answer 30

Lack of melanin

Question 31

What causes gray hair?

Answer 31

A mixture of pigmented and unpigmented hairs