Nervous System Unit Review

The brain and spinal cord make up the _____ nervous system.

• Somatic

• Autonomic

• Central

• Peripheral

All nerves outside the brain and spinal cord are part of the _____ nervous system.

• Autonomic

• Somatic

• Central

• Peripheral

Involuntary muscle control is governed by the _____ nervous system.

• Autonomic

• Somatic

• Central

• Peripheral

Voluntary, conscious movement is governed by the _____ nervous system.

• Autonomic

• Somatic

• Central

• Peripheral

The type of nerve cell that carries information (nerve impulses).

• Neuroglia

• Neuron

The type of nerve cell that provides protection and support.

• Neuroglia

• Neuron

Match the parts of a neuron with their descriptions.

• Protective coating around the axon

• Myelin sheath

• Part of cell containing the nucleus

• Cell body

• Carry nerve impulses AWAY from cell body

• Nodes of Ranvier

• Gaps between cells of the myelin sheath

• Axons

• Carry nerve impulses TOWARD the cell bod

• Dendrites

The neurons of chimpanzees have more myelin on their axons than human neurons. This makes their reaction time _____.

• Faster

• Slower

Match the types of nerve cells with their descriptions.

• Protect the CNS from infection

• Oligodendrocytes

• Make the myelin sheath in the CNS

• Microglia

• Make cerebrospinal fluid

• Ependymal cells

• Anchor neurons to blood vessels in CNS

• Astrocytes

Match the following cells of the Peripheral Nervous System with their functions.

• Provide support for cell bodies in PNS

• Neurons

• Carry nerve impulses

• Schwann cells

• Form the myelin sheath in PNS

• Satellite cells