Integumentary System

Question 1

The most superficial layer of the epidermis is the

Answer 1

stratum corneum

Question 2

Which component best serves as thermal insulation?

Answer 2

Hypodermis

Question 3

Place the layers of the epidermis in order from deepest to most superficial.

Answer 3

1. Stratum basale
   2.Stratum spinosum
2. Stratum granulosum
3. Stratum lucidum
4. Stratum corneum

Question 4

The secretion called ——— is composed of the combined secretions of ceruminous glands and sebaceous glands.

Answer 4

cerumen, earwax, or wax

Question 5

Albinism usually results from an inability to produce an enzyme called Blank______.

Answer 5

tyrosinase

Question 6

Glands are considered Blank______ skin structures.

Answer 6

accessory

Question 7

A genetic lack of melanin production causes a condition called

Answer 7

albinism

Question 8

Carotene accumulation in skin is usually in Blank______.

Answer 8

adipocytes and the stratum corneum

Question 9

Sebaceous glands may best be described as Blank______.

Answer 9

holocrine glands that usually duct into the hair follicle

Question 10

Describe the movement of melanin in the skin.

Answer 10

Melanin is transferred from melanocytes to keratinocytes.

Question 11

The dermis consists of two zones. The more superficial is the———layer and the deeper is the—– layer

Answer 11

papillary

reticular

Question 12

Identify the strata of the epidermis that contain cells that are still mitotic.

Answer 12

Cells in both the stratum basale and the stratum spinosum

Question 13

The zone of the epiphyseal plate that is closest to the epiphysis is the zone of Blank______and the zone closest to the diaphysis is the zone of Blank______.

Answer 13

resting cartilage, calcification

Question 14

Most bones in the body start out as——– cartilage.

Answer 14

hyaline

Question 15

Osteocyte cell extensions are found in long, narrow spaces called

Answer 15

canaliculi or canaliculus

Question 16

The chondrocytes in the zone of proliferation produce new cartilage through Blank______ cartilage growth.

Answer 16

interstitial

Question 17

The air-filled spaces lined by mucous membranes found within flat bones like the frontal bone are called

Answer 17

sinus

Question 18

Place the zones of the epiphyseal plate in order beginning with the zone nearest the epiphysis.

Answer 18

Zone of resting cartilage
Zone of proliferation
Zone of hypertrophy
Zone of calcification

Question 19

Define calcitonin

Answer 19

Hormone that functions to decrease blood calcium levels

Question 20

The type of cartilage cell that secretes a matrix is the

Answer 20

chondroblasts or chondroblast