Block 3 - Integument

Question 1

part of skin that is keratinized cornified stratified squamous epithelium

Answer 1

epidermis

Question 2

epidermis cells are called blank

Answer 2

keratinocytes

Question 3

layer of collagenous connective tissue under skin

Answer 3

dermis

Question 4

thick or thin skin refers to thickness of the blank

Answer 4

epidermis

Question 5

these are most numerous in thick skin and doesnt have hair or sebaceous gland

Answer 5

sweat glands

Question 6

not an official layer of skin and contains superficial fatty fascia

Answer 6

hypodermis

Question 7

in thin skin, all blank strata are thinner especially blank

Answer 7

epidermal, stratum corneum

Question 8

layer of epidermis that has a single layer of cuboidal or columnar cells

Answer 8

stratum basale

Question 9

stratum basale has many blank between adjacent cells and blank between cell and basal lamina

Answer 9

desmosomes, hemidesmosomes

Question 10

stratum basale has blank filaments and a blank cytoplasm

Answer 10

intermediate, basophilic

Question 11

layer of epidermis when cells pull apart except at desmosomes, and there are increased intermediate filaments

Answer 11

stratum spinosum

Question 12

layer layer of epidermis that contains two types of granules including keratohyalin, lamellar or membrane coating

Answer 12

stratum granulosum

Question 13

basophilic granules rich in protein, no membrane, not exported, filaments pass through them

Answer 13

keratohyalin

Question 14

granules seen only under EM, have membrane, are exocytosed, make lipid coating for keratinocytes

Answer 14

lamellar (membrane coating)

Question 15

layer of epidermis that is thin white and unstained, densely packed keratin filaments, thick plasmalemma, identifiable only in thick skin

Answer 15

stratum lucidum

Question 16

stratum lucidum is identical to blank

Answer 16

stratum corneum

Question 17

layer of epidermis that is keratinized flat “cells”, for wear and tear, cytoplasmic sacs filled with keratin filaments in an amorphous matrix

Answer 17

stratum corneum

Question 18

three non keratinocytes in epidermis

Answer 18

melanocytes, langerhans cells, merkel cells

Question 19

melanocytes come from what embryo origin

Answer 19

neural crest cells

Question 20

melanocytes resist staining and are under this layer

Answer 20

stratum basale

Question 21

this is produced by ribosomes, transported in rough er to golgi, and incorporated into melanosomes

Answer 21

tyrosinase

Question 22

blank is converted into melanin

Answer 22

tyrosine

Question 23

antigen presenting cells from marrow and are phagocytes

Answer 23

langerhans

Question 24

langerhans cells travel lymphatics to lymph node and give info to activate a blank

Answer 24

t lymphocyte

Question 25

dendritic cells present in basal layer that are mechanoreceptors for touch

Answer 25

merkel

Question 26

merkel cells have desmosomes that connect to blank

Answer 26

keratinocytes

Question 27

two layers of dermis

Answer 27

papillary, reticular

Question 28

layer of dermis immediately under epidermis and forms these projections that interdigitate with epidermal ridges (pegs)

Answer 28

papillary

Question 29

layer of dermis that is thick bundels of dense irregular ct, running in all directions

Answer 29

reticular

Question 30

invagination of epidermis into dermis/hypodermis, ends as a bulb in ct

Answer 30

hair follicle

Question 31

three layers of hair follicle that undergo cornificiation

Answer 31

outer root sheath, inner root sheath, hair shaft

Question 32

blank dissolves and disappears at level of sebaceous gland

Answer 32

inner root sheath

Question 33

outgrowth of outer root sheath with several acini

Answer 33

sebaceous gland

Question 34

sebaceous gland drains into blank

Answer 34

upper hair follicle

Question 35

mode of sebaceous gland secretion

Answer 35

holosecretion via hair or directly onto skin in the form of sebum

Question 36

mass of cells attached to hair follicle just below sebaceous gland duct

Answer 36

hair bulge

Question 37

even if bald, blank persist but blank are not present

Answer 37

hair follicles, hair shaft

Question 38

smooth muscle bundle from ct of hair follicle below sebaceous gland to papillary level of dermis

Answer 38

arrector pili muscle

Question 39

goose bumps are caused by blank

Answer 39

arrector pili muscle

Question 40

sweat glands found over most of the body and not associated with hair follicles

Answer 40

merocrine

Question 41

cells that surround secretory part of merocrine sweat glands

Answer 41

myoepithelial

Question 42

sweat glands that drain into hair follicles located in axilla, pubic, perineal, scrotal

Answer 42

apocrine

Question 43

apocrine glands are blank than merocrine (eccrine)

Answer 43

larger

Question 44

secretion of apocrine glands is odorless but this causes the odor

Answer 44

bacterial decomposition

Question 45

skin is involved in blank synthesis with uv light which is produced by blank

Answer 45

vitamin 3, keratinocytes

Question 46

Hair is only attached here

Answer 46

Bottom

Question 47

Hair bulge contains blank

Answer 47

Stem cells