Lecture 01

Question 1

Name 5 functions of the skin

Answer 1

Synthesis of vitamin D
Excretion and absorption
Water barrier
Cutaneous sensations
Thermoregulation and protection

Question 2

Classify the epidermis

Answer 2

Keratinised Stratified squamous epithelium

Question 3

Name the cell types found on the epidermis

Answer 3

Melanocytes
Keratinocytes
Intraepidarmal macrophages
Tactile epithelial cells

Question 4

Classify the layers of the epidermis from the outmost to the inner most

Answer 4

Stratum- corneum
Lucidum
Granulosum
Spinosum
Basal

Question 5

What type of tissue is the dermis composed of

Answer 5

Connective tissue

Question 6

Which fibres does the connective tissue consist of and what is their function

Answer 6

Collagen and elastic fibre which function to provide great tensile strength and ability to stretch and recoil

Question 7

Name 2 regions of the dermis

Answer 7

Papillary and reticular region

Question 8

Classify the type of connective tissue on the papillary region

Answer 8

Loose aerolar connective tissue

Question 9

Classify the type of connective tissue found on the reticular layer of the dermis

Answer 9

Dense irregular connective tissue

Question 10

Name three skin appendages

Answer 10

Hair nails and glands

Question 11

Another name for hair

Answer 11

Pili

Question 12

Functions of hair

Answer 12

Protection, heat loss, touch sensation

Question 13

Which type of muscle is the affect or pili

Answer 13

Smooth muscle

Question 14

Name the part which make the hair

Answer 14

Root and a shaft

Question 15

Name the 2 unique things found on the bulb

Answer 15

Papilla of the hair and hair matrix

Question 16

Name the layers of air from the outmost to the inner most

Answer 16

Cuticle
Cortex
Medulla

Question 17

Name the part which the nail constitutes of

Answer 17

Nail body
Free edge
Lunula
Cuticle

Question 18

What type of ducts do sebaceous gland have and what is their mode of secretion

Answer 18

Excretory ducts
Holocrine Secretion

Question 19

What is the function of the oil that is produced the sebaceous gland I.e sebum

Answer 19

Skin lubricant
Prevents brittle hair
Slightly acidic and kills bacteria

Question 20

Classify the merocrine gland

Answer 20

Stratified cuboidal epithelial

Question 21

Which part the secretory or the duct portion is myoepithelial cells presen

Answer 21

Secretory portion

Question 22

What is the mode of secretion of the merocrine gland?

Answer 22

Merocrine secretion

Question 23

What is the function of the merocrine gland

Answer 23

Producing sweat and it is also important for thermoregulation and excretion.

Question 24

What is i Dermal papillae

Answer 24

This are tiny mounds which project from the dermis into the epidermis

Question 25

What is a Epidermal ridge/Epidermal peg

Answer 25

mounds which project from the epidermis into the dermis

Question 26

What do the granulosum cells of the epidermis consist of

Answer 26

They consists of Keratohylin and lamellar granules

Question 27

What mode of secretion does the sweat gland exhibit

Answer 27

Merocrine secretion

Question 28

Are myoepithelial cells present in the secretory portion of the merocrine sweat gland and where is it located

Answer 28

Yes Located in the deep dermis or upper hypodermis

Question 29

Are myoepithelial cells present in the duct portion of the merocrine sweat gland

Answer 29

No

Question 30

Where is the apocrine sweat gland mostly found

Answer 30

Breast areolae Genital areas Axillae External ear canal

Question 31

What is the function of Nociceptor

Answer 31

Senses pain in epidermis and dermis

Question 32

Which nerve ending senses light touch

Answer 32

Meissners corpuscles

Question 33

Which nerve ending senses pressure and vibration

Answer 33

Pacinian corpuscles

Question 34

Where is the dermal papillae located

Answer 34

In the dermal papillae of palms, soles, digits, areola, lips

Question 35

Where is the pacinian corpuscles located

Answer 35

In the hypordemis of weight bearing and sensitive areas