Tissues 9- Hair and nails

Question 1

Functions of hair

Answer 1

Protection- injury/UV, eye protection
Sensation
Theromoregulation
Communication

Question 2

What is the pilo sebacious unit

Answer 2

Hair follicle
Hair Shaft
Errector pili muscle
Sebaceous gland

Question 3

Types of hair

Answer 3

Lanugo-
Foetus/anorexis
thin

Vellus
short fine and cover most the body

Terminal
thick and pigmented

Question 4

4 sections of the hair follicle

Answer 4

Infundibulum
isthmus
suprabulbar
hair bulb

Question 5

Which kind of louse spread diseases

Answer 5

body louse

Question 6

Structure of hair

Answer 6

Cortex
Medulla
Outer Cuticle

Keratin is coiled together to make filaments

Question 7

Stages of the hair cycle

Answer 7

Anagen- Growing phase
catagen- Resting Phase
telogen- Shedding Phase

Question 8

Functions of Nails

Answer 8

Protection-Chemical/physical

touch-manual dexterity

Question 9

What is the nail plate

Answer 9

Made in the germinal matrix
what we call nail
sits on nail bed

Question 10

What can nail clubbing show?

Answer 10

A range of diseases

Question 11

What can nail pigmentation show?

Answer 11

Melanoma