Nervous System - Anatomy

Question 1

Neurons & glia

Answer 1

CNS & PNS

Question 2

CNS made of

Answer 2

brain & spinal cord

Question 3

PNS made of

Answer 3

nerves

Question 4

nucleus

Answer 4

group of cell bodies in CNS

Question 5

tract

Answer 5

bundle of axons in CNS

Question 6

ganglion

Answer 6

group of cell bodies in PNS

Question 7

nerve

Answer 7

bundle of axons in PNS

Question 8

supporter & myelinating neuron in CNS

Answer 8

oligodendrocytes

Question 9

supporter & myelinating neuron in PNS

Answer 9

schwann cells

Question 10

lines fluid filled spaces, circulates CSF

Answer 10

ependymal cells

Question 11

immune cells, engulfs microorganisms & debris

Answer 11

microglia

Question 12

supply nutrients to neurons, cover blood capillaries, transmit info

Answer 12

astrocytes

Question 13

Sensory (afferent) direction

Answer 13

into CNS

Question 14

Motor (efferent) direction

Answer 14

into effector

Question 15

Sensory neuron: transmission process

Answer 15

Input: dendrites in PNS
Summation: cell body in PNS
Conduction: axon crosses PNS to CNS
Output: axon terminals in CNS

Question 16

Motor neuron: transmission process

Answer 16

Input: dendrites in CNS
Summation: cell body in CNS
Conduction: axon crosses CNS to PNS
Output: axon terminals in PNS

Question 17

Sensory & Motor systems

Answer 17

PNS

Question 18

Somatic & Autonomic systems

Answer 18

Motor

Question 19

Somatic (voluntary) control of

Answer 19

skeletal muscle

Question 20

Autonomic (involuntary) control of

Answer 20

smooth muscle, cardiac muscle, glands

Question 21

Somatic neurotransmitter and location

Answer 21

AcH released onto effector

Question 22

Somatic neurons

Answer 22

2 myelinated

upper: cell body in brain & axon in spinal cord
lower: cell body in spinal cord & axon in spinal nerves

Question 23

Autonomic neurons

Answer 23

3

N1: cell body in brain & axon in brain/spinal cord
N2 (preganglionic): cell body in brain/spinal cord & axon in PNS
N3 (postganglionic): cell body & axon in PNS, autonomic ganglion extending to effector

Question 24

SNS & PSNS

Answer 24

Autonomic

Question 25

SNS neurons

Answer 25

myelinated short preganglionic unmyelinated long postganglionic

Question 26

PSNS neurons

Answer 26

myelinated long preganglionic unmyelinated short postganglionic

Question 27

SNS neurotransmitters & locations

Answer 27

AcH at ganglion, NA onto effector (except sweat glands = AcH)

Question 28

PSNS neurotransmitters & locations

Answer 28

AcH on ganglion & effector

Question 29

SNS response

Answer 29

Fight or flight

Question 30

PSNS response

Answer 30

Rest & digest

Question 31

Fight or flight

Answer 31

increased HR dilated pupils decreased saliva dilated bronchi increased sweat decreased digestion increased blood pressure increased blood sugar

Question 32

Rest & digest

Answer 32

decreased HR contracted pupils increased saliva constricted bronchi dilated peripheral vessels

Question 33

SNS axons synapse

Answer 33

in ganglion

Question 34

PSNS axons synapse

Answer 34

close to effector

Question 35

SNS axons of N2 leave CNS at

Answer 35

thoracic/lumbar levels

Question 36

PSNS axons of N2 leave CNS at

Answer 36

cranial/sacral levels