Integumentary System

Question 1

What are the two distinct regions of the human skin?

Answer 1

Outer epidemis and inner dermis

Question 2

What part of the skin is composed of stratified squamous epithelial tissue?

Answer 2

Outer epidermis

Question 3

Is a connective tissue that is firmly attached to the epidermis by a basement membrane

Answer 3

Inner dermis

Question 4

Another layer found beneath the skin but is not a part of the skin

major storage site for yna and ja

Connects skin to muscle or bone

Answer 4

Hypodermis/Subcutaneous layer/Sub-Q

Question 5

Is made up of Strata: corneum, lucidum (soles and palms only), granulosum, spinosum, and basale

Answer 5

Epidermis

Question 6

The outermost layer of the skin consisting of 25-30 or more layers of keratinocytes (dead squamous cells filled with keratin)

Waterproof

Answer 6

Stratum corneum

Question 7

Consists of 3-5 rows of dead, flat keratinocytes. Only found in thick skin such as the soles and palms

Answer 7

Stratum Lucidum

Question 8

Consists of 3-5 rows of dying, flattened keratinocytes.

No dividing cells found here

Answer 8

Stratum granulosum

Question 9

8-10 rows of cells (mainly keratinocytes) that are often seen with thorn-like projections caused by tissue preparations in stained slides

Answer 9

Stratum spinosum

Question 10

Deepest layer of the epidermis

Made up of single row of cells attached to the basement membrane

cuboidal or columnar Cells undergo mitotic division to form new keratinocytes

Answer 10

Stratum basaleor/Stratum basale/Stratum Germitanivum

Question 11

Is made up of papillary and reticular layers.

Answer 11

(deeper) Dermis

Question 12

Layer made up of areolar connective tissue

Answer 12

Papillary layer

Question 13

Finger-like projections in the papillary layer that extend into the epidermis

Answer 13

Dermal papillae

Question 14

Genetically determined whorls formed by the dermal papillae that increase surface area, grip and friction.

they produce fingerprints

Answer 14

Epidermal ridges

Question 15

Deeper, much thicker region of the dermis composed of dense irregular connective tissue

Answer 15

Reticular layer

Question 16

Provide skin with strength

Answer 16

Collagen fibers

Question 17

Provide skin with elasticity

Answer 17

Elastic fibers

Question 18

Composed of columns of dead keratinized cells that are bonded together by extracellular proteins

Answer 18

Hair strand

Question 19

Superficial portion of the hair

Answer 19

Shaft

Question 20

Part of the hair found deep in the shaft and penetrates the dermis and sometimes the hypodermis

Answer 20

Hair root

Question 21

3 layers in the hair and hair root

Answer 21

inner medulla, middle cortex, and outer cuticle

Question 22

COmposed of keratinized, tightly packed epidermal cells that cover the dorsal surface of the distal portion of each digit

Answer 22

Nail

Question 23

Part of nail that extends past the digit

Answer 23

Free edge

Question 24

Part of nail embedded in the fold of the skin

Answer 24

nail root

Question 25

Part of nail that is half-moon shaped, whitish proximal area of the nail

Answer 25

lunula

Question 26

Secures the nail to the fingertip Beneath the free edge

Answer 26

Hyponychium

Question 27

Narrow band of epidermis that adheres to the nail

Answer 27

Eponychium

Question 28

Sweat glands

Answer 28

Sudoriferous glands

Question 29

Type of sweat gland that are most common they appear coiled tubular glands which number around 3000 per sq. inch and produce 600 mL of sweat

Answer 29

Eccrine sweat glands

Question 30

Type of sweat gland that secrete via exocytosis. Secretions are commonly referred to as cold sweat.

Answer 30

Apocrine sweat glands

Question 31

System that consists of the skin and accessory structures such as hair, nails and glands.

Answer 31

Integumentary system

Question 32

Means covering

Answer 32

Integument

Question 33

Functions of integumentary system

Answer 33

Protection, Sensation, Vitamin D Production, Temperature regulation, Excretion

Question 34

New cells form > Push older cells to surface > outermost cells protect cells underneath > deeper replicating cells replace lost cells from the surface During this cells change shape and chemical composition

Answer 34

keratinization

Question 35

Skin subjected to friction, number of layers in the stratum corneum increases producing...

Answer 35

Callus

Question 36

Thickened stratum corneum formed in a cone-shaped structure

Answer 36

corn

Question 37

Excessive sloughing of stratum corneum cells from the surface of the scalp

Answer 37

Dandruff