movement (e3)

Question 1

what is the somatic nervous system?

Answer 1

system through which the brain controls movement and receives sensory information from the body and head and neck

Question 2

spinal nerves

Answer 2

body

Question 3

cranial nerves

Answer 3

head and neck

Question 4

what is the autonomic nervous system?

Answer 4

neurons that receive information from and send commands to the heart, intestines, etc.

Question 5

what are the two breakdowns of the autonomic nervous system?

Answer 5

sympathetic, parasympathetic

Question 6

sympathetic

Answer 6

• vigorous activity
• increases breathing and heart rate
• decreases digestive activity
• most sympathetic axons release norepinephrine

Question 7

parasympathetic

Answer 7

• vegetative, nonemergency response
• decreases heart rate and increases disgestive activity
• conserves energy
• releases acetylcholine onto the organs and serotonin (wake-sleep cycles

Question 8

movement depends on muscle…

Answer 8

contractions

Question 9

neuromuscular junction

Answer 9

synapse between a motor neuron axon and muscle fiber

Question 10

what is released at the neuromuscular junction?

Answer 10

acetylcholine

Question 11

fast versus slow twitch fibers

Answer 11

fast - fast contractions and rapid fatigue, anaerobic
slow - slower contractions and no fatigue, aerobic

Question 12

what is the vagus nerve?

Answer 12

an extremely important cranial nerve in the parasympathetic system

Question 13

electrical stimulation of the vagus nerve

Answer 13

• very similar to DBS, but less dangerous
• relatively safe, uses electrodes implanted to the vagus nerve
• can be used for: epilepsy, migraines, numerous psychological disorders