In humans, tympanic membrane is composed of connective tissues which is covered with
a)	Skin outside and with mucus membrane inside	b)	Mucus membrane only
c)	Mucus membrane outside and with skin inside	d)	Skin only

(a)

Skin outside and with mucus membrane inside.

The pinna collects the vibrations in the air, which produce sound. The external auditory meatus leads inwards and extends upto the tympanic membrane (the ear drum). There are very fine hairs and wax secreting sebaceous glands in the skin of pinna and meatus. The tympanic membrane is composed of connective tissues covered with skin outside and with mucus membrane inside