Receptor sites for neurotransmitters are present on

Myelin sheath is produced by

Destruction of the anterior horn cells of the spinal cord would result in loss of

How do parasympathetic neural signals affect the working of the heart?

When a neuron is in resting state, i.e. not conducting any impulse, the axonal membrane is

During the propagation of a nerve impulse, the action potential results from the movement of

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?

Which of the following statements is correct about node of Ranvier?

Which of the following is regarded as a unit of nervous tissue?

The junction between the axon of one neuron and the dendrite of the next is called

Sympathetic nervous system induces

In humans, visceral organs are innervated by

Afferent nerve fibres carry impulses from

One function of parasympathetic nervous system is

Which of the following is associated with decrease in cardiac output?

Which of the following statements is not correct?

Which part of the brain is responsible for thermoregulation?

Stimulation of a muscle fibre by a motor neuron occurs at

Injury localised to the hypothalamus would most likely disrupt

The human hindbrain comprises three parts, one of which is

The nerve centres which control the body temperature and the urge for eating are contained in

Which part of human brain is concerned with the regulation of body temperature?

Which one of the following statements is correct?

Which one of the following do not act as a neurotransmitter?

One of the examples of the action of the autonomous nervous system is

Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells?

In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive

What used to be described as Nissl’s granules in a nerve cell are now identified as

Which cells do not form layer and remain structurally separate?

An action potential in the nerve fibre is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed, because

Which cranial nerve has the highest number of branches?

The Nissl’s granules of nerve cell are made up of

The roof of the cranium of frog is formed by

Respiratory centre is situated in

CNS is mostly made of

Ivan Pavlov performed experiments on

Vagus nerve is

hird ventricle of brain is also known as

Which of the following cranial nerves can regulate heartbeat?

Which of the following receptors are specifically responsible for maintenance of the balance of body and posture?

Which of the following statements is correct?

The transparent lens in the human eye is held in its place by

hotosensitive compound in human eye is made up of

Choose the correct statement.

In mammalian eye, the ‘fovea’ is the center of the visual field, where

Which one of the following statements is not correct?

Which part of the human ear plays no role in hearing as such but is otherwise very much required?

The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eyes is a derivative of

Cornea transplant in human is almost never rejected. This is because

Bowman’s glands are located in the

What is the intensity of sound in normal conversation?

Characteristic feature of human cornea is that

When we migrate from dark to light, we fail to see for some time but after a time visibility becomes normal. It is an example of

In the chemistry of vision in mammals, the photosensitive substance is called

In frog, ‘fenestra ovalis’ is

Cornea transplantation is outstandingly successful because

Retina is most sensitive at

Function of iris is to

Light rays entering the eye are controlled by

Iris is part of

Sensitive pigmented layer of eye is

Acute vision is present in

Snow blindness in Antarctic region is due to

In a man, abducens nerve is injured. Which one of the following functions will be affected?

Parkinson’s disease (characterised by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved n movement control and make use of neurotransmitter

injury to vagus nerve in human is not likely to affect

A person suffering from the deficiency of the visual pigment rhodopsin is advised to take more