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What is the correct answer?

4

Wrinkling of skin in old age is due to

A. gradual loss of elasticity in the subcutaneous layer

B. gradual loss of adipose tissue below dermis

C. poor supply of blood to skin

D. excess loss of water from skin

Correct Answer :

A. gradual loss of elasticity in the subcutaneous layer


Related Questions

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4

Prevention of evaporation of water from the skin surface in humans is due to

A. presence of sweat glands

B. stratum coreum

C. stratum lucidum

D. thick subcutaneous fat

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4

The corium of dermis is a derivative of

A. parietal mesoderm

B. ectoderm

C. endoderm

D. both (b) and (c)

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4

Sweat glands in mammals are primarily concerned with

A. Regulation of water content

B. Removal of excess salts

C. Killing of bacteria

D. Regulation of body heat

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4

Sebaceous glands are present in

A. skin in the epidermis

B. skin in the dermis

C. stomach in its epithelium

D. intestine in the epithelium

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4

In the mammalian skin, the adipose tissue is found

A. in the epidermis

B. in the dermis

C. in the muscles

D. below the derm

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4

A type of skin gland which is well developed and functional in females, but non-functional and vestigeal in the male is

A. sweat gland

B. sebaceous gland

C. mammary gland

D. gastric gland

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4

Structures present in the skin of frog and absent in skin of rabbit are

A. mucous glands

B. sebaceous glands

C. hairs

D. nails

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4

Sweat glands are confined to external ears in

A. hare

B. rabbit

C. whale

D. hippopotamus

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4

The sweat glands in hares and rabbits are seen in

A. tips of pinnae

B. area around the lips

C. soles of the paw

D. all of these

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4

The hair of a mammal is a structure which is

A. epidermal

B. mesodermal

C. dermal

D. endodermal

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4

Large sweat glands are characteristic of >

A. glans

B. scrotum

C. pinna

D. areola mammary

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4

Skin of frog is characterized by the ab- I sence of

A. scales

B. epidermis I

C. mucous glands

D. chromatophores

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4

The layer of cells in the skin which is periodically cast off is

A. stratum lucidum

B. stratum corneum

C. stratum granulosum

D. malpighian layer

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4

The sudoriferous glands of the skin secrete

A. hormones

B. water and salt

C. oil

D. sebum

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4

Malpighian layer of the skin is a part of

A. dermis

B. epidermis

C. sub cutaneous fat

D. hair follicle

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4

Mammary glands are modified......in mammals

A. sweat glands

B. mucous glands

C. sebaceous glands

D. meibomian glands

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4

The modification of the skin at the terminal part of the dorsal surface of phalanges result in formation of

A. wrinkles

B. hair

C. feathers

D. nails

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4

In frog, the mucous and poisonous glands are found in

A. stratum comeum

B. stratum spongiosum

C. stratum compactum

D. any of these

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4

Leather from the mammalian skin is derived from

A. epidermis

B. dermis

C. subdermal tissue

D. whole of the skin

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4

The skin in man is thickest at

A. palm

B. sole

C. head

D. thumb

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The integument of rabbit differs from that of frog in

A. possessing stratum comeum for protection against wear and tear

B. not possessing subcutaneous fat

C. possessing mucous glands for producing mucus.

D. possessing sebaceous glands which produce sebum for keeping skin greasy and water-proof.

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4

Lacrymal glands are responsible for the secretion of

A. mucus

B. tears

C. hormones

D. enzymes

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4

Wrinkling of skin in old age is due to

A. gradual loss of elasticity in the subcutaneous layer

B. gradual loss of adipose tissue below dermis

C. poor supply of blood to skin

D. excess loss of water from skin

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4

In the skin collagen and elastic fibres are abundant in the

A. subcutaneous layer

B. epidermis

C. glands

D. stratum corneum

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4

Ceruminous or wase glands are seen in

A. eyes of mammals

B. olfactory passage of mammals

C. external auditory meatus in mammals

D. none of these

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4

Glands of Zeis are associated with the eye lashes. These are modified

A. sebaceous glands

B. sweat glands

C. mucous glands

D. sudorific gland

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4

The function of sebaceous glands in mammals is to

A. plug the skin pores

B. nourish the hair follicles

C. cool the skin by vaporisation

D. make the skin and hair water proof

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4

Sebaceous glands are found in

A. epidermis of skin of mammals

B. dermis of skin of mammals

C. epithelium of stomach of frog

D. epithelium of intestine of frog

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4

Colour in skin of frog is due to

A. melanin

B. melanophores

C. porphyrin

D. chromatophores

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4

Scales in sharks are

A. placoid

B. rhomboid

C. cycloid

D. ctenoid