Hair

Q.

Functions of the hair include

1. Excretion

2. Protection

3. Secretion

4. Absorption

Q.

Why does cutting of hair cause no pain?

Q.

The bulb is the only living tissue of the hair.

1. True
2. False

Q.

He usually cuts my hair

1. quick

2. more quickly

3. none

4. quickly

Q.

Briefly explain why does a person feel refreshed when his forehead is being sponged with Eaude colonge?

Q. Write structure and function of hair found on the skin.

Q. Which component of blood helps in healing of wounds ?

1. Eosinophils
2. Basophils
3. Both A and B
4. None of these

Q.

What is A, B and C in the given figure?

1. A: Hair papillae; B: Hair bulb; C: Hair shaft

2. A: Hair papillae; B: Hair shaft; C: Hair bulb

3. A: Hair bulb; B: Hair shaft; C: Hair papillae

4. A: Hair shaft; B: Hair bulb; C: Hair papillae

Q. Hair follicles are present in the ___.

Q. White blood cells determine the colour of the blood.

1. False
2. True

Q. Give an account of the structure of the hair. Write its function.

Q. Write down the names of muscles that activate and operate motion of hair in human being?

Q. The hair shaft of hair is lodged in

1. Bulb
2. Follicle
3. Papilla
4. Root

Q.

Hair follicles are present in the ___.

Q. Loss of pigmentation leads to gray hair.

1. False
2. True

Q.

Hair is not the characteristic feature of mammals.

1. True
2. False

Q. The outer portion of the hair is called as

1. Root
2. Crown
3. Hair
4. Shaft

Q. Evaporative cooling is one of several processes that contributes to homeostasis in endotherms.
Which of the following describes the thermodynamic principle behind this process?

1. As a phase change, evaporation of water absorbs heat, drawing heat energy out of the body.
2. The heat that is generated naturally transfers from the system (organism) to the surroundings providing evaporative cooling effect.
3. The evaporation of sweat is an exothermic process that favors the transfer of heat from the organism to the surroundings.
4. Cooling is achieved by the secretion of sweat.

Q. What is "goose-flesh" ? How is it brought about? <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> [Review Questions - Pg No.134 - SAQ - 2]

Q. Which of the following consists keratinized cells?

1. Oil gland
2. Hair
3. Sweat gland
4. All of the above

Q. Blood exhibits coagulation in case of trauma. Does it include mental trauma?

Q.

wat r hair follicles ?

Q.

Which of the following is responsible for the colour of hair?

1. Melanin

2. Keratin

3. Sebum

4. Acne

Q. The 'goosebumps', are caused due the contraction of flexor muscle.

1. True
2. False

Q. Formation of hair takes place due to ___________ derivative.

1. Hair
2. Subcutaneous gland
3. Mammary gland
4. Hair follicle