Nervous System Quiz

What are the main parts of a neuron?

• Heart, lungs, liver, and kidneys

• Roots, terminals, stem, and body

• Cell, Nucleus, Roots, and Extensions

• Dendrites, cell body, axon, and axon terminals

Explain the process of an action potential in a neuron.

• An action potential is initiated by a hyperpolarization of the neuron's membrane

• An action potential is a passive process that does not involve ion channels

• An action potential is caused by the efflux of potassium ions

• An action potential is initiated by a depolarization of the neuron's membrane, causing voltage-gated sodium channels to open

Describe the role of the dendrites.

• Receive input

• Release neurotransmitters

• Open voltage-gated channels

• Close chemical ion channels

How do neurons communicate with each other?

• Electrical and chemical signals

• Morse code

• Axons

• pH changes

Describe the role of neuroglia.

• They regulate body temperature

• They support neurons

• They replace neurons

• They digest food

Name the chemical signals by which neurons communicate.

• Nerves

• Amines

• Neurotransmitters

• Sodium

Describe the role of the axon terminals.

• Release neurotransmitters

• Receive neurotransmitters

• Open voltage-gated channels

• Close voltage-gated channels

Describe the difference between somatic and autonomic nervous systems.

• The somatic nervous system controls voluntary movements and reflexes, while the autonomic nervous system controls involuntary functions.

• The somatic nervous system controls involuntary movements and reflexes, while the autonomic nervous system controls voluntary functions.

• The somatic nervous system and autonomic nervous system are the same and can be used interchangeably.

• The autonomic nervous system controls voluntary movements and reflexes, while the somatic nervous system controls involuntary functions.

Describe the role of effectors.

• Conduct impulses

• Carry out motor functions

• Detect changes inside the bodu

• Make decisions

Which organs belong to the CNS?

• Heart, brain

• Lungs, spinal cord

• brain, spinal cord

• Cerebrum, alveoli