LEC EXAM #2 CHP 8

Question 1

CNS:

Answer 1

Brain and spinal cord

Question 2

PNS:

Answer 2

Periphery nerves and associated ganglion

Question 3

Efferent neurons:

Answer 3

Go from stimulus receptors to CNS

Question 4

Afferent neurons:

Answer 4

Go from CNS to effectors (muscles and glands)

Question 5

Function of Somatic NS:

Answer 5

Skeletal muscle ->voluntary

Question 6

Function of Autonomic NS:

Answer 6

Homeostatis of internal organs-> involuntary

Question 7

2 types of neurons in the PNS:

Answer 7

• sensory neurons (afferent)

- motor neurons (efferent)

Question 8

2 divisions of the PNS:

Answer 8

• somatic nervous system

- autonomic nervous system

Question 9

What ion causes vesicle to dump it into the synapse?

Answer 9

Calcium

Question 10

What is acetyl-coe broken down by?

Answer 10

Enzymes or transport proteins

Question 11

Why are you able to stay awake with cocaine?

Answer 11

Neurotransmitter in synapse

Question 12

Major parasympathetic nerve?

Answer 12

CN 10 (vagus)

Question 13

ANS antagonistically controls:

Answer 13

Cardiac, smooth muscle, and glands for homeostasis

Question 14

How does the ANS control the pons?

Answer 14

Respiration

Question 15

2 divisions of the ANS?

Answer 15

• sympathetic nervous system (fight-or-flight)

- parasympathetic nervous system (rest & digest)

Question 16

Blood vessels only have:

Answer 16

Sympathetic

Question 17

How does the ANS control the hypothalamus?

Answer 17

• Water balance
• Temp
• Hunger

Question 18

How does the ANS control the medulla?

Answer 18

• Respiration
• Cardiac
• Vomiting
• Swallowing

Question 19

Sympathetic dominant hormone:

Answer 19

Epinephrine

Question 20

Sympathetic neurotransmitter:

Answer 20

Norepinephrine

Question 21

Parasympathetic receptor:

Answer 21

Nicotinic and muscarinic cholinergic receptor

Question 22

Parasympathetic neurotransmitter:

Answer 22

ACh (acetylcholine)

Question 23

Sympathetic receptor:

Answer 23

Alpha and Beta adrenergic receptor

Question 24

Agonist:

Answer 24

Mimics neurotransmitter

Question 25

Antagonist:

Answer 25

Blocks neurotransmitter

Question 26

Antagonist stops:

Answer 26

Insulin

Question 27

Nerve to nerve or nerve to skeletal muscle:

Answer 27

Nicotinic cholinergic receptor

Question 28

Short term stress:

Answer 28

Sympathetic nervous system directly synapses with adrenal gland-> dumps out epinephrine

Question 29

Long term stress:

Answer 29

Dumps out cortisol

Question 30

Paraspinal to organ:

Answer 30

Muscarinic cholinergic receptor

Question 31

Most Na+ v.g.c. are concentrated at:

Answer 31

Nodes, no myelin present

Question 32

Two types of conduction:

Answer 32

• normal

- saltatory propagation

Question 33

Presynaptic neuron:

Answer 33

Sending neuron

Question 34

Postsynaptic neuron:

Answer 34

Receiving neuron

Question 35

Interneuron:

Answer 35

only located in the CNS

sends messages from sensory neurons to motor neurons

Question 36

Ganglion

Answer 36

cluster of neuron cell bodies found only in the PNS

Question 37

Where are nicotinic receptors located?

Answer 37

Skeletal muscle and autonomic ganglia

Question 38

Where are muscarinic receptors located?

Answer 38

Parasympathetics and sympathetic cholinergics