Cerebellum of brain is

Which of the following statements about the neural basis of the knee-jerk reflex in humans is false ?

The leg extensor is stimulated to contract by the motor neuron in this reflex loop.
The only synapses between neurons involved in this loop occur in the spinal cord.
The basic response is a polysynaptic circuit containing several interneurons.
Conscious action can modify the basic reflex because ofthe action of interneurons

Solution

The basic knee-jerk response is controlled by a monosynaptic circuit. Interneurons are only involved in the voluntary or conscious modification of this reflex.

The pathway of reflex arc as :

The pneumotaxic centre in the body is

The part of human hind brain that is responsible for hand-eye coordination is

The smallest cranial nerve in human being is

Which of the following cranial nerves are involved in the movement of eye?

The number of spinal nerves in man is

Which of the following cranial nerve of man is both sensory and motor?

Solution

Trigeminal nerves (V) are relatively long and mixed nerves(sensory and motor both) that arise from lateral aspects of anterior part of medulla oblongata.

If a person has lost his memory in an accident, the following part of the brain have got injured

Solution

A mammal, from whose cerebrum is removed loses all responses that depend upon consciousness and memory.

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