ANAPHY M6 2

Question 1

“Cutaneous membrane”
Largest organ of the body in weight

Answer 1

SKIN

Question 2

superficial, thinner portion, composed of epithelial tissue, avascular
Develops from ectoderm

Answer 2

EPIDERMIS

Question 3

deeper, thicker connective tissue portion, vascular
Develops from mesoderm

Answer 3

DERMIS

Question 4

Keratinized stratified squamous epithelium

Answer 4

EPIDERMIS

Question 5

produce the protein keratin & lamellar granules

Answer 5

KERATINOCYTES

Question 6

pigment producing cells

Answer 6

MELANOCYTES

Question 7

composed of a single row of cuboidal or columnar keratinocytes & stem cells to continually produce new keratinocytes “stratum germanativum”
Melanocytes and tactile epithelial cells

Answer 7

STRATUM BASALE

Question 8

consists of numerous keratinocytes (8–10 layers)
Coarser keratin
provides both strength and flexibility to the skin

Answer 8

STRATUM SPINOSUM

Question 9

flattened keratinocytes that are undergoing apoptosis (3-5 layers)
lamellar granules fuse with the plasma membrane and release a lipid-rich secretion — acts as a water-repellent sealant
transition between metabolically active strata and the dead cells

Answer 9

STRATUM GRANULOSUM

Question 10

present only in the thick skin (palms, soles, palmar surface of the digits, plantar surface of toes)
flattened clear, dead keratinocytes that contain large amounts of keratin and thickened plasma membranes (4-6 layers)

Answer 10

STRATUM LUCIDUM

Question 11

25 to 30 layers of extremely flattened dead keratinocytes
final product of the differentiation process of the keratinocytes
protect deeper layers from injury and microbial invasion

Answer 11

STRATUM CORNEUM

Question 12

abnormal thickening due to repeated friction

Answer 12

Callus

Question 13

dense irregular connective tissue containing collagen and elastic fibers— great tensile strength (resists pulling or stretching forces)
Cells present: fibroblasts, macrophages, few adipocytes, Blood vessels, nerves, glands, and hair follicles (epithelial invaginations of the epidermis) are embedded in the dermal layer

Answer 13

dermis

Question 14

consists of areolar connective tissue with thin collagen and fine elastic fibers; dermal ridges that house blood capillaries, tactile corpuscles, and free nerve endings

Answer 14

PAPILLARY DERMIS

Question 15

consists of dense irregular connective tissue with bundles of thick collagen and coarse elastic fibers; adipose cells, hair follicles, nerves, sebaceous glands, and sudoriferous glands

Answer 15

RETICULAR DERMIS

Question 16

Simple coiled tubular glands
much more common
helps regulate body temperature through evaporation (thermoregulatory sweating)
skin of forehead, palms, soles
emotional sweating

Answer 16

Eccrine Sweat Glands

Question 17

Also called sudoriferous glands
releases sweat into hair follicles

Answer 17

Sweat Glands

Question 18

coiled tubular glands w larger ducts and lumens
produces milky or yellowish sweat
axilla, groin, areolae of breasts, bearded region of the face
secrete sweat in sexual activities (no thermoregulation)

Answer 18

Apocrine Sweat Glands