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Reflex Action

neurons carry...

Question

_ neurons carry impulses from the CNS to the effectors. __ neurons are also known as sensory neurons.

A

Afferent; Efferent

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B

Motor; Afferent

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Solution

The correct option is B Motor; Afferent
The answer is option A.

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Q. Fill in the following blanks with suitable words :
(a) The two examples of effectors are .........and ...........
(b) Our.............system allows us to react to our surroundings. Information from receptors passes along...........neurons to our brain. Our brain sends impulses along..........neurons to our muscles.
(c) A neuron which carries an impulse to the brain is called a ........... neuron.
(d) The neuron which carries a message for action to a muscle or gland is known as a......... neuron.

Q. Identify the different types of neurons on the basis of the given information and select the correct option.
(I) They transmit impulses from the

C N S

towards the effectors.
(II) They serve as a link between sensory and motor neuron.
(III)They transmit impulses from sense organs towards the

C N S

	(I)	(II)	(III)
(i)	Motor neurons	Interneurons	Sensory neurons
(ii)	Interneurons	Relay neurons	Motor neurons
(iii)	Sensory neurons	Motor neurons	Relay neurons
(iv)	Sensory neurons	Relay neurons	Motor neurons

Statement 1: Effector neurons activate muscles to contract in a reflex arc

Statement 2: The reflex arc is a neural circuit that begins with a sensory neuron at a receptor.

Which neuron transmits the impulse from the sensory neuron to a motor neuron?

Given below are sets of 5 terms each. Rewrite the terms in the correct order in a logical sequence.

Motor neuron, Receptor, Sensory neuron, Effector, Association neuron (Pathway of a nerve impulse)

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