In the given figure of synapse few structure are marked as 1, 2, 3, and 4. Study the figure carefully and identify the structure which transmits signal across a chemical synapse. And name it.
2, When an impulse, or nerve signal reaches the end of axon, the synaptic vesicle release a neurotransmitter into the small space between the adjoining cells.
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15
What is a reflex action ?
The entire process of response to a peripheral nervous stimulation, that occurs involuntarily is called a reflex action.
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seesaw
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shark
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thief
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lifesaver
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fairy
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thief
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15
The inner ear also contains a complex system called vestibular
apparatus, located above the cochlea.What is it composed of ?
The vestibular apparatus is composed of three semi-circular canals and the otolith (macula is the sensory part of saccule and utricle).
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What is Crista Ampullaris ?
The base of canals is swollen and is called Ampulla, which contains a projecting ridge called Crista Ampullaris which has hair cells.
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10
What are the 2 different types of Fibres in PNS ?
The nerve fibres of the PNS are of two types :
(a) afferent fibres
(b) efferent fibres