Quarter 2, Histology, Test 1, Integument

Front 1

what are the five layers of keratinocytes in the epidermis from deep to superficial

Back 1

stratum- basale, spinosum, granulum, lucidum, corneum

Front 2

in what layer of the epidermis do keratinocytes turn into keratinized squames

Back 2

stratum lucidum

Front 3

in what layer of the epidermis would you find lamellar bodies (lipid and hydrolytic enzymes)

Back 3

stratum granulosum

Front 4

from what amino acid is melanin made from

Back 4

tyrosine (enzyme: tyrosinase)

Front 5

which type of albinism exists when there is no tyrosinase enzyme

Back 5

Type I albinism

Front 6

what type of albinism exists when there is no transmembrane trasnporter protein to get stuff to mealnosomes

Back 6

Type II albinism

Front 7

what type of albinism occurs when there isn't any myosin to move melonosomes

Back 7

Type I Griscelli Syndrome

Front 8

what cell in the epidermis functions as an antigen presenting dendritic cell, and will migrate to lymph nodes

Back 8

langerhans cells

Front 9

what cells in the epidermis are mechanoreceptors in the stratum basale

Back 9

merkel cells

Front 10

in what layer of the epidermis would you expect to find langerhans cells

Back 10

stratum spinosum

Front 11

in what layer of the epidermis would you expect to find melanocytes

Back 11

stratum basale with processes into stratum spinosum

Front 12

what is the name of the structure that projects from the dermis into the epidermis

Back 12

dermal papillae

Front 13

what is the name of the epidermis that surround the dermal papillae

Back 13

rete ridges

Front 14

what are the two layers of the dermis from superficial to deep

Back 14

papillary layer and reticular layers

Front 15

the reticular layer of the dermis is made of

Back 15

dense irregular CT

Front 16

where would you find meissner's corpuscles

Back 16

dermal papillae

Front 17

what three things would you find in a dermal papillae

Back 17

capillary loop, lymphatic capillary, and meissner's corpuscle

Front 18

the hair shaft and inner root sheath develop from what portion of the hair follicle

Back 18

hair bulb

Front 19

what structure induces development of the hair bulb

Back 19

dermal papillae

Front 20

the inner root sheath of hair does not extend to the surface of skin, but breaks off at this structure

Back 20

infundibulum

Front 21

what term describes active hair growth where the hair bulb has moved deep

Back 21

anagen

Front 22

what term describes regression of hair and the hair bulb moves to the skin

Back 22

catagen

Front 23

what term describes a resting, non growing hair follicle

Back 23

telogen

Front 24

what type of gland has alveolar glands, secrete lipids, and pheromones via holocrine secretion and are regulated by sex hormones

Back 24

sebaceous gland

Front 25

normally what type of gland is a sweat gland

Back 25

simple unbranched coiled tubular gland

Front 26

what type of sweat gland is not associated with a hair follicle and involved in thermoregulation and can resorb NaCl

Back 26

Eccrine sweat gland

Front 27

what type of of sweat gland is associated with hair folicle in axilla, anogenital and areolae of breasts

Back 27

apocrine sweat glands

Front 28

which are larger, apocrine or eccrine sweat glands

Back 28

apocrine

Front 29

in mammary glands the proteins are secreted by ___ mechanism and lipids are secreted by ___ mechanism

Back 29

merocrine/apocrine

Front 30

in what layer of the epidermis would you find proliferating keratinocytes and immature post-mitotic cells

Back 30

stratum basale

Front 31

in what layer of the epidermis would you find cells focused on production of proteins and other stuff for keratinization

Back 31

stratum spinosum

Front 32

in what layer of the epidermis would you find cells filled with bundles of keratin filaments

Back 32

stratum spinosum

Front 33

the stratum granulosum contains keratohyalin granules that are aggregates of ...

Back 33

proflaggrin (not within membrane)

Front 34

in the stratum spinocum ___ are present and contain lipid and hydrolytic enzymes that will be important in forming a water impermeable layer

Back 34

lamellar granules

Front 35

changes in the rate of production or loss of squmes will result in a disease known as...

Back 35

ichthyoses

Front 36

what shape is the melanocyte nucleus

Back 36

ovoid

Front 37

langerhans cells can be differentiated from keratinocytes due to their lighter staining cytoplams, deeply indented nucleus and ___ shped endosomes

Back 37

tennis-racket

Front 38

what is the name of the granule in langerhans cells that are involved in the acquisition and storage of antigen

Back 38

Birbeck granules

Front 39

in what parts of the body would you expect to find greater numbers of merkel cells

Back 39

areas of enhanced tactile perception

Front 40

where would you most likely find epidermal rete ridges and dermal papillae

Back 40

glabrous skin (non hairy)

Front 41

where are the two main plexuses of vessels in the dermis

Back 41

superfical plexus at papillary/reticular junction and deep plexus at cutaneous/subcutaneous junction

Front 42

the hair follicle, sebaceous glands, apocrine sweat glands, and arrector pili are all part of the...

Back 42

philosebaceous unit

Front 43

what are the borders of the infundibulum of the hiar follicle

Back 43

from skin to sebaceous glands

Front 44

what are the borders of the isthmus of the hair follicle

Back 44

sebaceous gland to arrector pili muscle

Front 45

what are the borders of the inferior portion of the hair follicle

Back 45

anything deep to the arrector pilli muscle

Front 46

which of the sweat glands actively resorbs NaCl

Back 46

eccrine sweat gland

Front 47

which sweat gland will collect the fluid in the duct prior to secretion

Back 47

apocrine sweat gland

Front 48

the main duct or lactiferous duct is lined by...

Back 48

stratified squamous epithelium

Front 49

just deep to the lactiferous duct there is an expansion known as...

Back 49

lactiferous sinus

Front 50

the larger ducts, or ducts draining into the lactiferous sinus are lined by

Back 50

stratified cuboidal epithelium

Front 51

smaller ducts which feed into larger ducts are lined by...

Back 51

simple cuboidal/columnar