Neuron Function

What is the function of afferent (sensory) neurons?

• They send signals to the brain and spinal cord from glands and muscles.

• They relay messages from sense organs and receptors to the brain or spinal cord.

• They control voluntary movements.

• They are responsible for reflex actions.

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What do efferent (motor) neurons do?

• They carry messages from the brain to the sense organs.

• They process information in the brain.

• They send signals from the brain and spinal cord to glands and muscles, causing movement.

• They receive signals from the external environment.

Interneurons are thousands of times more numerous than which types of neurons?

• Sensory neurons

• Neurons in the heart

• Neurons in the muscles

• Neurons in the liver

What is the primary function of interneurons?

• To carry oxygen

• To carry information

• To carry nutrients

• To carry waste products

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Where do interneurons transmit signals between?

• Between neurons in the brain and neurons in the spinal cord

• Between neurons in the heart and neurons in the lungs

• Between neurons in the muscles and neurons in the liver

• Between neurons in the eyes and neurons in the ears

What does the cell body of a neuron contain?

• Mitochondria

• Nucleus

• Ribosomes

• Chloroplast

What is the function of dendrites in a neuron?

• Transmit signals to other neurons

• Carry out metabolic functions

• Contain the nucleus

• Receive signals from other neurons

Which part of the neuron carries out metabolic functions?

• Axon

• Dendrites

• Cell Body

• Myelin Sheath

What is the function of an axon in a neuron?

• Connects two neurons together

• Transmits signals to dendrites or cell body of other neurons

• Stores neurotransmitters

• Protects the neuron

How can the structure of an axon be described?

• Thick, root-like extension of neuron

• Slender, tail-like extension of neuron

• Spherical component of neuron

• Branching part of neuron