Nervous System (Devin)

The nervous system is comprised of ​ (a)   , which transmit nerve impulses along nerve fibers, and ​ (b)   , which carry out a variety of functions to aid and protect the nervous system.

• neurons
• neuroglia

Organs of the nervous system are divided into the ​ (a)   , which includes the brain and spinal cord, and the ​ (b)   , which includes the nerves that extend throughout the body.

• central nervous system
• peripheral nervous system

The motor functions of the body include the somatic nervous system which is ​ (a)   , and the autonomic nervous system which is ​ (b)   .

• consciously controlled
• unconsciously controlled

Reorder the following

• Conscious or unconscious decisions follow leading to motor function

• Sensory impulses are integrated into the brain

• Sensory receptors at the ends of peripheral nerves gather information and convert it into impulses

Match the following neuroglial cells with their function.

• phagocytize bacteria and other cell debris

• astrocytes

• near blood vessels; aid in metabolism and help response to injury

• Schwann cells

• produces the myelin surrounding peripheral nerves

• oligodendrocytes

• cover the inside of the ventricles of the brain

• microglial cells

• forms the myelin in the brain and spinal cord

• ependyma

Match the following

• found in the eyes, nose, ears; one axon and one dendrite extend from opposite sides of the cell body

• bipolar neurons

• found outside the CNS; the axon & the dendrite arise from a single short fiber out of the cell body

• multipolar neurons

• found in the brain and spine; many nerve fibers arising from the cell body

• unipolar

Match the following

• multipolar neuron

• 
• unipolar neuron

• 
• bipolar neuron

• 

Match the following

• conduct impulses from the peripheral receptors toward the spinal cord and brain

• interneurons

• multipolar neurons that conduct impulses from the brain and spinal cord to the peripheral receptors

• motor neurons

• multipolar neurons in the CNS that link neurons

• sensory neurons

Identify the dendrites.

Identify the cell body.