gradual loss of elasticity in the subcutaneous layer
gradual loss of adipose tissue below dermis
poor supply of blood to skin
excess loss of water from skin
A. gradual loss of elasticity in the subcutaneous layer
presence of sweat glands
stratum coreum
stratum lucidum
thick subcutaneous fat
parietal mesoderm
ectoderm
endoderm
both (b) and (c)
Regulation of water content
Removal of excess salts
Killing of bacteria
Regulation of body heat
skin in the epidermis
skin in the dermis
stomach in its epithelium
intestine in the epithelium
in the epidermis
in the dermis
in the muscles
below the derm
sweat gland
sebaceous gland
mammary gland
gastric gland
mucous glands
sebaceous glands
hairs
nails
hare
rabbit
whale
hippopotamus
tips of pinnae
area around the lips
soles of the paw
all of these
epidermal
mesodermal
dermal
endodermal
glans
scrotum
pinna
areola mammary
scales
epidermis I
mucous glands
chromatophores
stratum lucidum
stratum corneum
stratum granulosum
malpighian layer
hormones
water and salt
oil
sebum
dermis
epidermis
sub cutaneous fat
hair follicle
sweat glands
mucous glands
sebaceous glands
meibomian glands
wrinkles
hair
feathers
nails
stratum comeum
stratum spongiosum
stratum compactum
any of these
epidermis
dermis
subdermal tissue
whole of the skin
palm
sole
head
thumb
possessing stratum comeum for protection against wear and tear
not possessing subcutaneous fat
possessing mucous glands for producing mucus.
possessing sebaceous glands which produce sebum for keeping skin greasy and water-proof.
mucus
tears
hormones
enzymes
gradual loss of elasticity in the subcutaneous layer
gradual loss of adipose tissue below dermis
poor supply of blood to skin
excess loss of water from skin
subcutaneous layer
epidermis
glands
stratum corneum
eyes of mammals
olfactory passage of mammals
external auditory meatus in mammals
none of these
sebaceous glands
sweat glands
mucous glands
sudorific gland
plug the skin pores
nourish the hair follicles
cool the skin by vaporisation
make the skin and hair water proof
epidermis of skin of mammals
dermis of skin of mammals
epithelium of stomach of frog
epithelium of intestine of frog
melanin
melanophores
porphyrin
chromatophores
placoid
rhomboid
cycloid
ctenoid