Introduction To The Nervous System

Question 0

Chemicals released by neurons that stimulate other neurons, muscles, or glands

Answer 0

Neurotransmitters

Question 1

Releases neurotransmitters

Answer 1

Axon terminal

Question 2

Gaps in the myelin sheath

Answer 2

Nodes of Ranvier

Question 3

Conducts an electrical current towards the cell body

Answer 3

Dendrite

Question 4

Increases the speed of impulse transmission

Answer 4

Myelin

Question 5

Location of the nucleus

Answer 5

Cell body

Question 6

Conducts impulses away from the cell body

Answer 6

Axon

Question 7

Junction or point of close contact between neurons

Answer 7

Synapse

Question 8

Neuron that served and part of the conduction pathway between sensory and motor neurons

Answer 8

Association neurons

Question 9

Neuron that conducts impulses away from the CNS to the muscles and glands

Answer 9

Motor (efferent neuron)

Question 10

Changes occurring within the body that affect the nervous system function

Answer 10

Stimuli

Question 11

Neuron found in the brain or spinal cord

Answer 11

Sensory neuron

Question 12

Neuron that conducts impulses toward the CNS from the body periphery

Answer 12

Sensory neuron

Question 13

All neuroglia found in the CNS

Answer 13

Astrocytes, ependymal cells, microglial cells, oligodendrocytes

Question 14

All neuroglia found in the PNS

Answer 14

Schwann cells and satellite cells

Question 15

Most common neuroglia in the CNS

Answer 15

Astrocytes

Question 16

Protect and cushion nerve fibers in the PNS

Answer 16

Satellite cells

Question 17

Ciliated neuroglia that circulate cerebrospinal fluid

Answer 17

Ependymal

Question 18

Connects neurons to capillaries in the brain and spinal cord

Answer 18

Astrocytes

Question 19

Phagocytes in the CNS, cleaning up bacteria and dead brain cells

Answer 19

Microglial cells

Question 20

Neuroglia that helps control the chemical environment of the brain and spinal cord

Answer 20

Astrocytes

Question 21

Specialized cells that myelinate the fibers of neurons found in the PNS

Answer 21

Schwann cells

Question 22

Specialized cells and get myelinate the fibers of neurons found in the CNS

Answer 22

Oligodendrocytes

Question 23

How many pairs of cranial nerves are in the human body?

Answer 23

12

Question 24

What is the longest cranial nerve?

Answer 24

Vagus

Question 25

What does the vagus control

Answer 25

Heart rate

Question 26

How many pairs of spinal nerves are in the human body?

Answer 26

31

Question 27

What is the longest spinal nerve in the body?

Answer 27

Sciatic

Question 28

What does the sciatic nerve control?

Answer 28

Supplies feeling to the lower back and legs