Integumentary System

Question 1

Comprised of skin or integument, hypodermis and structures derived from skin

Answer 1

Integumentary System

Question 2

Superficial layer (skin composition)

Answer 2

Epidermis

Question 3

Other term for hypodermis

Answer 3

Subcutis

Question 4

Located in the stratum basale of epidermis

ovoid cell with long axis parallel to basal lamina

Answer 4

Merkell cells

Question 5

deeper layer

Answer 5

dermis

Question 6

• Most numerous cell type
• produces keratin

Answer 6

Keratinocytes

Question 7

Pigment producing cells

Answer 7

Melanocytes

Question 8

round or ovoid nucleus with cytoplasm containing ovoid pigment granules

Answer 8

Melanosomes

Question 9

Melanosomes + tyrosinase?

Answer 9

Melanin

Question 10

Dark brown pigment

Answer 10

Eumelanin

Question 11

Yellow red pigment

Answer 11

Pheomelanin

Question 12

stellate with long cytoplasmic processes, from bone marrown, with related functions to monocytes and macrophages

Answer 12

Intraepidermal macrophages

Question 13

• outermost layer of the epidermis
• several layers of dead keratinocytes

Answer 13

Stratum corneum

Question 14

present in skin epidermis and keratined or cornified mucous membranes

Answer 14

soft keratin

Question 15

skin appendages
contain large amounts of cystine and disulfide bonds

Answer 15

hard keratin

Question 16

not typically present in the skin of domestic animals except in:
digital pads
perioplic epidermis
teat

Answer 16

Stratum lucidum

Question 17

account for the clear appearance of stratum lucidum

Answer 17

Eleidin

Question 18

mitosis is not possible in this layer
start of the process of keratinization

Answer 18

stratum granulosum

Question 19

contain kertohyalin granules

Answer 19

keratinocytes

Question 20

part of stratum germinavitivum

Answer 20

Stratum spinosum

Question 21

deepest layer of the epidermis that lies over the dermis
has a wavy apperance

Answer 21

Stratum basale

Question 22

Stratum basale + stratum spinosum?

Answer 22

Stratum germinativum

Question 23

• in contact with the stratum basale separated by basal lamina
• presents dermal papillae
• contains sensory receptors and capillaries

Answer 23

Papillary layer

Question 25

• deeper and main part of the dermis
• irregular DWFCT with thick bundles of interlacing collagen fibers
• also with sweat and sebacous glands

Answer 25

Reticular layer

Question 26

hypodermal fat in marine mammals

Answer 26

blubber

Question 27

in other areas of the body

Answer 27

Paniiculus adiposus

Question 28

carnivore footpad and horse sole

Answer 28

Digital cushion

Question 29

thinnest skin in the body

Answer 29

scrotum

Question 30

simple coiled tubular apocrine sweat glands that open to the surface of the skin or into the hair follicle

Answer 30

external auditory meatus

Question 31

combination of sebum, secretion of ceruminous gland and desquamated epithelial cells

Answer 31

cerumen or ear wax

Question 32

• structures derived from the skin
• from epidermis to hypodermis

Answer 32

adnexa

Question 33

covers the entire animal body except for hairless regions

Answer 33

Ordinary hair

Question 34

contains natural pigment and moisture of hair

Answer 34

cortex

Question 35

core of hair

Answer 35

medulla

Question 35

outer layer of hair shaft

Answer 35

cuticle

Question 36

• large hair, associated with sensory nerve endings
• given off by tactile or sinus hair follicle

Answer 36

Sensory or tactile or sinus hair

Question 37

diagonal band of smooth muscle cell, attached at the papillary layer of the dermis

Answer 37

Arrector pili muscle

Question 38

inactive mammary gland

Answer 38

non-lactating mammary gland

Question 39

active mammary gland

Answer 39

lactating mammary gland

Question 40

only skin gland in bird
special sebaceous gland located above the sacral vertebra

Answer 40

uropygeal gland / preen gland / oil gland