Skin

Q. What is edema?

Q. Name the largest sense organ in our body .

Q.

Which part of the skin is responsible for making it waterproof?

1. Dermis

2. Hypodermis

3. Epidermis

4. Sensory cells

Q.

Why palm has no hair?

Q.

In the skin, what is the function of the papillary layer?

Q.

What is the function of subcutis?

Q.

How does the skin synthesize Vitamin D?

Q.

Which of these are not characteristics of the dermis?

1. Muscle and nerve fibers

2. Conical dermal papillae

3. Thinner in areas receiving greater friction and use
4. Loss of elasticity with age and sun exposure

Q.

Vitamin D production by the skin depends on ___.

1. Exposure to sun

2. Presence of keratin
3. Action of sebum
4. Both B and C

Q.

Blood vessels and nerve endings are present in the ___ layer of the skin.

Q.

Which of the following is not a function of skin?

1. Giving shape to the body

2. Synthesising vitamin D

3. Functioning as a sensory organ

4. Releasing sweat to regulate the body temperature

Q. Which of the following organs acts as an air filtration unit in humans?

1. Kidneys
2. Nose
3. Brain
4. Stomach

Q.

Name the following and give one characterstic of each:

a) A modified parenchyma tissue that provides buoyancy to hydrophytes plants.

b) A fibrous connective tissue of great strength but limited flexibility.

c) A present in the husk of coconut which is commercially exploited.

Q.

Light skin and dark skin differ in?

1. Retention of melanin by the cells

2. Rate and amount of melanin produced

3. No. of epidermal cells present

4. No. of melanocytes present

Q. The largest organ of our body is

1. Stomach

2. Skin
3. Kidney
4. Lungs

Q.

Light skin and dark skin differ in:

1. Number of melanocytes present

2. Number of epidermal cells present

3. Retention of melanin by the cells

4. Rate and amount of melanin produced

Q.

The functions of the skin include all of these except

1. Taking in nutrients

2. Preventing the entry of microorganisms

3. Preventing excessive water loss

4. Regulating body temperature