Skin

Question 1

Stratum Basale

Answer 1

deepest layer of epidermis, consists of a single layer of mitotically active, cuboidal to low columnar shaped cells.

Question 2

Stratum Spinosum

Answer 2

thickest layer of epidermis composed of polyhedral to flattened cells.

Question 3

Stratum Granulosum

Answer 3

3 to 5 layers of flattened keratinocytes, most superficial layer of epidermis in which cells possess nuclei.

Question 4

Stratum Lucidum

Answer 4

clear, homogenous, thin layer of cells, present only in thick skin.

Question 5

Stratum Corneum

Answer 5

most superficial layer of skin composed of numerous layers of flattened, fully keratinised cells.

Question 6

Epidermis

Answer 6

Keratinocyte – produces keratin
Melanocyte – produces melanin
Merkel Cell – mechanoreceptor
Langerhans Cell – antigen presenting cell

Question 7

Dermis

Answer 7

Blood vessels – transport
Sweat glands & ducts – sweat, thermoregulation
Leukocytes – immune responses
Sensory receptors
Collagen & elastin – anchoring and stretching
Fibroblasts – make collagen & elastin

Question 8

Hypodermis

Answer 8

Adipose tissue
Fibroblasts
Blood vessels
Nerves