SKIN

A) DEFINE:

1) Cornified layer.

2) Dermis

3) Epidermis

4) Keratin

5) Malpighian layer

6) Melanin

7) Skin

B) List the function of skin.

C) List the four ways in which the skin serves as a protected body covering.

D) Name the two main layers of skin.

E) Name the three regions of skin epidermis.

F) Name the pigment which imparts skin its colour.

G) Mention the roles of the following:

1) blood capillaries

2) oil glands

3) sweat glands

H) Draw a labelled diagram of the vertical section of skin showing its structure.

I) Name any two glands found in human skin.

J) What is keratin ? where is it found in the skin ?

K) FILL THE BLANKS:

1) The three regions of skin epidermis are ____ , ___ and ___ .

2) Cells in the Cornified layer are ___ and are made of ___ .

3) The cells in the___ layer divide constantly.

4) Dermis is made up of___ tissue.

5) Sweat glands are present in__

6) ___ is the largest organ of the body.

7) The outermost layer of skin__

8) The___ layer of skin is germinative layer.

9) Cells of ___ layer are dead and made of a horny protein called___

10) Dermis, below the epidermis, is much ___ layer than the epidermis.

11) Synthesis of Vitamin___ by the action of sunlight.