de the following processes occur?we move our hand away from a hot object
- The sound waves, collected by the pinna are cha
We move our hand away from a hot object.
Agungent odour, makes us close our nose.
Fin the blanks with suitable words.
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Answers
Answer:
We move our hand away from a hot object. This is due to responsiveness to stimuli. When we touch a hot object the sense organs feel the temperature and the hand is withdrawn. The stimulus is carried to the brain by the sensory neuron while it is carried back to effector organs by motor neurons.
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Answer:
Following is a list of the events (in a random order) that lead to the formation of an auditory impulse.
(i) Vibration is transferred from the malleus to the incus to the stapes.
(ii) Basilar membrane moves up and down.
(iii) Nerve impulse is transmitted in cochlear nerve to auditory cortex of brain for impulse analysis and recognitions.
(iv) Sound waves pass through ear canal.
(v) Stereocilia of hair cells of organ of Corti rub against tectorial membrane.
(vi) Sound waves cause ear drum to vibrate.
(vii) Nerve impulse is generated.
(viii) Vibrations move from fluid of vestibular canal to the fluid of tympanic canal.
(viii) Vibrations move from fluid of vestibular canal to the fluid of tympanic canal.
(ix) Membrane at oval window vibrates.
Explanation: