Nerves Quiz

How many main parts does the human nervous system have?

• Five

• Three

• Two

• Four

What does the peripheral nervous system consist of?

• Brain only

• Nerves

• Brain and spinal cord

• Neurons

How do nerve impulses travel?

• Only in one direction

• In a circular motion

• Randomly

• In multiple directions

What do sensory nerves do?

• Release hormones

• Stimulate muscle contraction

• Carry information to the central nervous system

• Carry information to muscles

How many pairs of cranial nerves do humans have?

• 10 pairs

• 12 pairs

• 14 pairs

• 16 pairs

What is the main function of the autonomic nervous system?

• To enhance memory

• To control voluntary movements

• To maintain homeostasis

• To process sensory information

Which division of the autonomic nervous system prepares the body for emergencies?

• Sympathetic nervous system

• Central nervous system

• Peripheral nervous system

• Parasympathetic nervous system

What is the role of myelin?

• To slow down nerve impulses

• To connect neurons

• To generate nerve impulses

• To insulate axons

What happens at a synapse?

• Neurotransmitters are released

• Nerve impulses stop

• Myelin is produced

• Neurons physically connect

What is the result of an action potential reaching a muscle cell?

• The muscle cell relaxes

• The muscle cell contracts

• The muscle cell divides

• The muscle cell dies