Name: Skin Shield: The Integumentary System
Uploaded: 2019-07-19
Duration: 9 min 47 s
Description: Your integumentary system is your body's outer layer. It consists of your skin, hair, nails and glands. Learn more about them in this video.

Question

Match the items in Column I with those in Column II

Column I	Column II
(i) Air Spaces	a. Hair
(ii) Mammary gland	b. Sebaceous glands
(iii) Goose Flesh	c. Rudimentary in males
(iv) Tracers of urea	d. Races of hot countries
(v) More numerous sweet pores	e. Grey hair
(vi) Oily Secretion	f. Sweat

Accepted Answer

(i)-e

The gray hair is due to minute airspace formed in the hair when the pigments lost. The colour of the hair is due to varying quantities of melanin.

(ii)-c

Mammary glands are modified sweat glands. These glands are found in both males and females. But in males it is rudimentary.

(iii)-a

During winter or during emotion, hairs on the skin gets lifted called piloerection. This is to trap air and act as a shield to prevent the cold air to enter inside the body.

(iv)-f

Urea is found in sweat, out of total urea excreted from the body just 1% is excreted through sweating. Sweat consists of about 99 per cent water, 0.2 to 0.5 per cent salts (mainly sodium chloride) and traces of urea (0.08 per cent).

(v)-d

Outer opening on the skin for sweating is called a sweat pore. It is estimated that the total number of sweat pores is 2 million. But people of hot countries, sweat pores are more in number. It helps in cooling the body by evaporation.

(vi)-b

Sebaceous glands is one of the derivative of the skin. It gives out an oily secretion that make the hair and outer surface of the skin oily and waterproof. This prevents the loss of water by evaporation.

Column I Column II

(i)Airspace e. Grey hair

(ii)Mammary gland c. Rudimentary in males.

(iii)Goose Flesh a. Hair

(iv)Traces of urea f. Sweat

(v)More numerous sweats pores d. Races of hot countries.

(vi)Oily secretion b. Sebaceous glands.

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