Biology (Nervous System)

The unit of Nervous system is

• neuron

• nerve impulse

• ganglion

• nephron

A wave of electrochemical changes that travels along the length of neurons is called

• nerve-growth factor

• myelin-sheath

• hormone

• nerve impulse

Which of the following conduct impulses toward the cell body?

• Nodes of ranvier

• Shwan cells

• Axons

• Dendrites

The peripheral nervous system consists of

• Brain

• Nerves

• Spinal cors

• Glands

Peripheral nervous system consists of the brain and spinal cord.

• True

• False

Which of the following is NOT the component of the PNS?

• Elastic connective tissue

• Cranial nerves

• Spinal nerves

• Ganglia

Name the basic structural and functional unit of the nervous system.

Which of the following cells supports, nourishes, and protect the neurons?

• Nissl bodies

• Perikaryon

• Ganglia

• Glial cells

Name the multipolar neuron which is located entirely within the central nervous system.

• Motor neuron

• Interneuron

• Efferent neuron

• Afferent neuron

Out of the following, which one does not affect the speed of conduction of nerve impulse.

• No. of ganglia

• Myelin sheath

• Axon diameter

• Temperature