Integument Lab exam

Question 1

Identify the two principle layers of the integument and possible 3rd layer?

Answer 1

Epidermis, dermis, hypodermis.

Question 2

Identify the 2 regions that make up the dermis layer:

Answer 2

Papillary and reticular layer

Question 3

What specific type of connective tissue is in Papillary layer?

Answer 3

Areolar connective tissue

Question 4

What specific type of connective tissue is in Reticular layer?

Answer 4

Dense irregular connective tissue

Question 5

Identify the different layers of the epidermis

Answer 5

Stratum corneum, lucidum, granulosum, spinosum, basale

Question 6

Name the 3 different cell types that are located in the stratum basale layer

Answer 6

keratinocytes, melanocytes, and tactile cells.

Question 7

Name the cell type that is found in stratum spinosum

Answer 7

epidermal dendritic

Question 8

What is the function of the tactile cell?

Answer 8

a sensory receptor to touch

Question 9

What is the function of the Epidermal dendritic cell?

Answer 9

Phagocytic immune cell that engulfs invading pathogens.

Question 10

Which epidermal layers are considered “alive”?

Answer 10

Stratum basale, spinosum, granulosum

Question 11

Which epidermal layers are considered “non-living” cell layers?

Answer 11

stratum corneum, lucidum.

Question 12

Why do the cells die?

Answer 12

Getting to far away from nutrients, and no blood supply.

Question 13

Compare thin skin with thick skin - how are they different?

Answer 13

Thin skin-non kerantinized and lacks lucidum.

Thick skin- kerantinized and no sebaceous gland.

Question 14

What are lines of cleavage?

Answer 14

Lines of cleavage are pattern of fiber bundles in the skin.

Question 15

Why are lines of cleavage important to understand them?

Answer 15

Incisions made perpendicular are slow to heal and incisions made parallel heal better.

Question 16

Identify the two types of Glandular epithelia “exocrine glands” found in skin:

Answer 16

sebaceous and sweat gland.

Question 17

Identify the two types of sweat glands in the skin:

Answer 17

Merocrine and apocrine gland

Question 18

What is Merocrine gland of sweat glands?

Answer 18

Helps to regulate bodys temperature. secretes directly on the skin. Example: Sweat gland.

Question 19

What structures do you find in the dermis?

Answer 19

Blood vessels, glands, hair follicles, nail roots,sensory nerve endings, and smooth muscle.

Question 20

What tissue types do you find in the dermis?

Answer 20

Areolar, dense irregular tissue.

Question 21

What is Apocrine gland of sweat glands?

Answer 21

produces odor, secrete products into hair follicles. Example: mammary gland

Question 22

What are exocrine glands?

Answer 22

secrete fluids into epithelial surfaces of the body. Example: Sweat gland, sebaceous gland.

Question 23

What are endocrine glands?

Answer 23

release hormones directly in the blood circulatory system, modulate internal body processes. Example: pituitary