Chapter 7 - Nerve Cells - A and P

What is structure B?

• Nucleus

• Dendrite

• Axon

• Cell Body

Which direction will an impulse run?

• A

• B

This insulating material forms a layer, around the axon of a neuron.  It enables electrical signals to travel down the axon at higher speeds.

• neuron
• myelin sheath
• dendrite
• neurotransmitter

What are the 2 major divisions of the peripheral nervous system (PNS)?

• Sensory & Motor
• Peripheral & Central
• Somatic & Autonomic
• Brain & Spinal Cord

What is the central nervous system (CNS) made of?

• brain and spinal cord
• brain and cranial nerves
• spinal cord and spinal nerves
• cranial nerves and spinal nerves

The __________ nervous system communicates with the skeletal muscles and the __________ nervous system communicates with the smooth and cardiac muscle as well as glands.

• enteric; somatic

• autonomic; enteric

• enteric; autonomic

• somatic; autonomic

What is the name of cells that support the cells that send information?

• Neurons
• Axons
• Dendrites
• Neuroglia

Small cells that engulf and destroy microbes and cellular debris in the CNS

• microglia

• horns

• neuroglia

• astrocytes

Neurons that only have on process?

• Multipolar

• Bipolar

• Unipolar

• Unpolar

Unipolar neurons are always ....

• Sensory

• Reflex

• Visual

• Only in the CNS