MCQs on the Nervous System

Which of the following is the primary function of the nervous system?

• Digestion

• Circulation

• Sensory and motor coordination

• Hormone secretion

The basic functional unit of the nervous system is the:

• Neuron

• Glial cell

• Synapse

• Axon

The part of the neuron that carries electrical impulses away from the cell body is the:

• Dendrite

• Axon

• Soma

• Synapse

Which of the following structures is responsible for the myelination of axons in the central nervous system (CNS)?

• Schwann cells

• Oligodendrocytes

• Astrocytes

• Microglia

The largest part of the human brain is the:

• Cerebellum

• Medulla oblongata

• Cerebrum

• Hypothalamus

Which part of the brain controls breathing and heart rate?

• Cerebellum

• Pons

• Medulla oblongata

• Thalamus

The blood-brain barrier primarily functions to:

• Allow all substances to pass from the blood into the brain

• Prevent harmful substances from entering the brain

• Transport nutrients to the brain

• Control the release of hormones into the brain

The autonomic nervous system (ANS) regulates all of the following except:

• Heart rate

• Digestive processes

• Skeletal muscle movement

• Blood pressure

Which of the following is a function of the sympathetic nervous system?

• Stimulates digestion

• Inhibits heart rate

• Increases blood pressure

• Promotes relaxation

The gap between two neurons is called the:

• Dendrite

• Axon terminal

• Synapse

• Myelin sheath