Nervous System

What are Neurons?

• nerve cells

• muscles

• organs

• hair

What Are Dendrites?

• cause movement

• where a neuron receives input from other cells

• cell bodies

• pumps blood

What is a Synaptic Cleft?

• neurotransmitters

• spinal cord

• gap between adjacent neurons

• nerve cells

The Automatic Nervous System is Voluntary

• true

• false

What does the Somatic Nervous System Control?

• nerve cells

• smooth muscles

• skeletal muscles

• cardiac muscles

What do Cranial Nerves Do?

• produce myelin sheaths

• pump blood

• carry impulses to and from the brain

• controls muscles

What are Myelin Sheaths?

• nerve cells

• organs

• neurons

• white, fatty material

What do Schwann Cells Do?

• they transmit messages

• they produce myelin sheaths

• they protect neurons

• they support cells in the cns

Myelin Sheaths Speed the Nerve Impulse Transmisson

• true

• false

Most Neuron Cell Bodies Are Found In The:

• axons

• CNS

• PNS

• nucleus