Lab 2

Question 1

layers of epidermis (superficial to deep)

Answer 1

Stratum Corneum
Stratum Lucidum
Stratum Granulosome
Stratum Spinosum
Stratum Basale

**Can Little Girls Shoot Baskets

Question 2

Keritinocytes

Answer 2

Found in stratum basale, produce keratin

Question 3

Melanocytes

Answer 3

Found in stratum basale, produces melanin, protects skin from UV rays and gives color

Question 4

Which layer is ONLY in thick skin?

Answer 4

Stratum lucidum

Question 5

2 Layers of dermis

Answer 5

Papillary (areolar connective tissue)

Reticular (dense irregular connective tissue)

Question 6

Dermal papillae

Answer 6

Upward wavy projections in dermis into epidermis

Question 7

Two types of sensory receptors in skin?

Answer 7

Meissner’s Corpuscles - light touch

Pacinian corpuscles - deep touch (pressure)

Question 8

Sudoriferous Glands

Answer 8

Sweat Gland
Merocrine gland - most numerous, cooling mechanism, sweat pore
Apocrine gland - BO, sweat containing fatty acid, secretes into hair follicle

Question 9

Sebaceous Gland

Answer 9

Secretes sebum (oil) - lubricates hair

Question 10

4 types of glands

Answer 10

Sudoriferous, sebaceous, ceruminous, lactiferous

Question 11

Lactiferous Glands

Answer 11

Milk gland

Question 12

Ceruminous Glands

Answer 12

Ear wax

Question 13

Axial Skeleton

Answer 13

Head, spine, ribs,

Question 14

Appendicular Skelenton

Answer 14

Appenages

Question 15

Bone Compostition

Answer 15

O - Collagen, cells

I - hydroxyapatite (salt)

Question 16

Bone Shapes

Answer 16

Long - longer than broad
short - equal in dimensions (wrist bones)
irregular - none of the above
flat - ex: sternum

Question 17

Periosteum

Answer 17

Outside lining of bone composed of dense irregular CT

Question 18

Endosteum

Answer 18

Inner lining of bone composed of dense irregular connective tissue

Question 19

Lacunae

Answer 19

House osteocytes (holes around osteon in circular pattern)

Question 20

Canaliculi

Answer 20

Thin tubes throughout osteon