ANS (8) EXAM 2 Material

Question 1

Somatic NS Area of concern

Answer 1

External Environment

Question 2

Autonomic NS area of concern

Answer 2

Internal Environment

Question 3

Somatic NS Effector Organs

Answer 3

Musculoskeletal system

Question 4

Autonomic NS Effector Organs

Answer 4

Smooth muscle, glands, cardiac muscle..

Question 5

Somatic NS Location of motor neurons

Answer 5

CNS

Question 6

Autonomic NS location of motor neurons

Answer 6

Outside CNS (ganglion)

Question 7

Somatic NS # of synapses

Answer 7

Monosynaptic (1)

Question 8

Autonomic NS # of synapses

Answer 8

Disynaptic (2)

Question 9

Somatic NS Control

Answer 9

Mostly controlled voluntarily/consciously

Question 10

Autonomic NS Control

Answer 10

Involuntary - not under conscious control

Question 11

Somatic NS: CNS Controls?

Answer 11

Requires input from the CNS

ex: to flex arm

Question 12

Autonomic NS: CNS controls?

Answer 12

Many internal organs can function independantly of CNS input

ex: heart beating

Question 13

What types of receptors are in the Afferent system of ANS? (4)

Answer 13

1. Mechanoreceptors
2. Chemoreceptors
3. Nocioceptors
4. Thermoreceptors

Question 14

Rest and Digest: Parasympathetic or sympathetic?

Answer 14

Parasympathetic

Question 15

Energy conservation and storage: parasympathetic or sympathetic?

Answer 15

Parasympathetic

Question 16

Fight or flight: Parasympathetic or sympathetic?

Answer 16

Sympathetic

Question 17

Activated during exercise, excitement, emergencies: Parasympathetic or sympathetic?

Answer 17

Sympathetic

Question 18

Autonomic Dysreflexia is a spinal cord injury where?

Answer 18

Above T6

Question 19

What happens to the sympathetic neurons below the level of the lesion in autonomic dysreflexia?

Answer 19

They are activated due to some noxious stimuli

Question 20

Is the spinal cord able to receive signals from the brain that INHIBITS sympathetic activity in autonomic dysreflexia?

Answer 20

NO

Question 21

What are the consequences from the SC being unable to receive signals from the brain to inhibit sympathetic activity?

Answer 21

1. Excessive sympathetic response

2. Spike in blood pressure (can be life threatening)

Question 22

Why cant someone with Autonomic Dysreflexia urinate?

Answer 22

Because the motor signals cant reach the organs due to the lesion