1.4 (Quiz 1)

Question 1

Single cell layer

Answer 1

Stratum basale (Stratum germinativum)

Question 2

Attached to basement membrane

Answer 2

Stratum basale (Stratum germinativum)

Question 3

Mitotically active

Answer 3

Stratum basale (Stratum germinativum)

Question 4

Many desmosomes

Answer 4

Stratum spinosum

Question 5

Abundant keratin fibers

Answer 5

Stratum spinosum

Question 6

Outer layer of Stratum spinosum cells has ___ that contain ___

Answer 6

lamellar bodies, glycolipids

Question 7

Lamellar bodies of lipid and glycolipid

Answer 7

Stratum granulosum

Question 8

Keratohyaline granules containing filaggrin

Answer 8

Stratum granulosum

Question 9

Binding of keratin filaments to form bundles

Answer 9

Stratum granulosum

Question 10

Waxy cell envelopes containing keratin

Answer 10

Stratum lucidum, Stratum corneum

Question 11

Clear zone microscopically

Answer 11

Stratum lucidum

Question 12

Found in thick skin only

Answer 12

Stratum lucidum

Question 13

major cell type in epidermis

Answer 13

Keratinocytes (cell type of epidermis)

Question 14

Provides barrier function

Answer 14

Keratinocytes (cell type of epidermis)

Question 15

Produces Vitamin D precursor

Answer 15

Keratinocytes (cell type of epidermis)

Question 16

Derived from neural crest

Answer 16

Melanocytes (cell type of epidermis)

Question 17

Produce melanin pigment

Answer 17

Melanocytes (cell type of epidermis)

Question 18

Derived from basal layer of epidermis (not neural crest)

Answer 18

Merkel cells (cell type of epidermis)

Question 19

Mechanoreceptor function

Answer 19

Merkel cells (cell type of epidermis)

Question 20

Derived from bone marrow cells

Answer 20

Langerhans (dendritic) cells (cell type of epidermis)

Question 21

Potent antigen-presenting cells for T-lymphocytes

Answer 21

Langerhans (dendritic) cells (cell type of epidermis)

Question 22

No junctions with keratinocytes

Answer 22

Langerhans (dendritic) cells (cell type of epidermis)

Question 23

Found in outer stratum spinosum

Answer 23

Langerhans (dendritic) cells (cell type of epidermis)

Question 24

Migrate into and out of epidermis from dermis

Answer 24

Langerhans (dendritic) cells (cell type of epidermis)

Question 25

Carry antigens to lymph nodes draining skin via afferent lymph

Answer 25

Langerhans (dendritic) cells (cell type of epidermis)

Question 26

Important for discriminating shape and texture

Answer 26

Merkel cells (cell type of epidermis)

Question 27

Afferent nerve axon loses myelin sheath as it penetrated basement membrane

Answer 27

Merkel cells (cell type of epidermis)

Question 28

Forms a nerve plate at point of contact with Merkel cell membrane

Answer 28

Merkel cells (cell type of epidermis)

Question 29

Capillary network, Sensory nerve endings (Meissner)

Answer 29

Papillary layer

Question 30

Sweat glands, Capillary network w/ AV anastomoses, Sebaceous glands

Answer 30

Reticular layer

Question 31

vascular passage by which blood is diverted from its usual or normal path

Answer 31

shunt

Question 32

Associated with hair follicles

Answer 32

Sebaceous glands

Question 33

Branched acinar glands

Answer 33

Sebaceous glands

Question 34

Holocrine secretion: sebum

Answer 34

Sebaceous glands

Question 35

Product of dying sebaceous gland cells (lots of lipid)

Answer 35

Sebaceous glands

Question 36

Substrate for bacteria

Answer 36

Sebaceous glands

Question 37

Acne: chronic inflammation of sebaceous glands

Answer 37

Sebaceous glands

Question 38

Thermoregulation and mineral excretion

Answer 38

Eccrine sweat gland

Question 39

Simple coiled gland

Answer 39

Eccrine sweat gland

Question 40

Derived from ectoderm

Answer 40

Eccrine sweat gland

Question 41

Coiled tubular gland-lumen larger than eccrine sweat glands

Answer 41

Apocrine sweat gland

Question 42

Duct empties into canal of hair follicle

Answer 42

Apocrine sweat gland

Question 43

Protein rich secretion

Answer 43

Apocrine sweat gland

Question 44

Pain & temperature

Answer 44

Free nerve ending

Question 45

non specific Tactile

Answer 45

Meissner corpuscle, Merkel cell

Question 46

Tactile (hair movement)

Answer 46

Root hair plexus

Question 47

Tactile (pressure, vibration)

Answer 47

Pacinian corpuscle

Question 48

nerve endings adjacent to papillae; light touch

Answer 48

Merkel cells

Question 49

temperature, pain, itch

Answer 49

Free nerve endings

Question 50

elliptical structure adjacent to papillae; light touch

Answer 50

Meissner corpuscles

Question 51

concentric lamellae; coarse touch, pressure and vibrations

Answer 51

Pacinian corpuscles