Biology 111 Nervous System Overview Quiz

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What is the main function of the sympathetic division of the autonomic nervous system?

To promote rest and relaxation, and 'rest and digest' functions

To regulate the activity of smooth muscles, cardiac muscles, and glands

To stimulate the body's stress response and prepare it for 'fight or flight' (correct)

To control the voluntary movement of skeletal muscles

Which type of neuron is primarily found in the central nervous system (CNS)?

Sensory neurons

Multipolar neurons (correct)

Unipolar neurons

Bipolar neurons

What is the role of the $myelin$ $sheath$ in the function of neurons?

It provides structural support for the neuron

It acts as a barrier to prevent the spread of neurotransmitters

It helps to generate and propagate nerve impulses

It facilitates the rapid transmission of electrical signals along the axon (correct)

Which type of glial cell in the peripheral nervous system (PNS) is responsible for forming the myelin sheath around axons?

Schwann cells Signup and view all the answers

What is the main function of the $nodes$ $of$ $Ranvier$ in the structure of a myelinated axon?

To facilitate the rapid transmission of electrical signals along the axon Signup and view all the answers

Which type of neuron is responsible for carrying sensory information from receptors towards the central nervous system?

Sensory neurons Signup and view all the answers

Which part of the nervous system consists of nerves carrying information away from the central nervous system?

Efferent division Signup and view all the answers

What is the primary function of the parasympathetic division of the autonomic nervous system?

Rest and digest activities Signup and view all the answers

Which structural component of a neuron is responsible for generating and conducting nerve impulses away from the cell body?

Axon Signup and view all the answers

What is the primary function of oligodendrocytes in the central nervous system?

Producing the myelin sheath around axons Signup and view all the answers

Which type of neuron is responsible for relaying information between sensory and motor neurons, primarily within the central nervous system?

Interneurons Signup and view all the answers

What is the primary function of the axolemma in the structure of a neuron?

Specialized for conducting nerve impulses Signup and view all the answers

Which type of glial cell in the central nervous system is responsible for covering neurons, synapses, and capillaries?

Astrocytes Signup and view all the answers

What is the term used to describe bundles of neuron processes in the peripheral nervous system?

Nerves Signup and view all the answers

Which type of neuron is primarily found in the peripheral nervous system and has a single process?

Unipolar neuron Signup and view all the answers

What is the term used to describe regions of the central nervous system composed mainly of cell bodies and unmyelinated axons?

Gray matter Signup and view all the answers

Biology 111 Nervous System Overview Quiz

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