Lecture 15- Autonomic Nervous System II

Question 1

Does the SNS or PNS control pupil constriction?

Answer 1

PNS

Question 2

SA and AV node have stretch receptors innervated by which system?

Answer 2

PNS

Question 3

Decrease in BP cause stimulation or inhibition of SNS?

Answer 3

Simulation- leads to vasoconstriction

Question 4

Increase in BP leads to stimulation or inhibition of SNA

Answer 4

Inhibition- decrease vascular resistance

Question 5

Does PNS or SNS slow heart rate by decreasing SA node discharges?

Answer 5

PNS

Question 6

Can the SNS increase HR

Answer 6

Yes

Question 7

Which pathway does PNS use to constrict pupils?

Answer 7

Pupillary light reflex

Question 8

Which pathway does SNS use to dilate pupils?

Answer 8

Horner’s pathway

Question 9

Which eye innervation travels down the neck to the cervicothoracic ganglion?

Answer 9

SNS dilation

Question 10

Does horner’s or Pupillary light reflex sometimes manifest with vestibular disease?

Answer 10

Horner’s syndrome

Question 11

Which nerve of the SNS controls micturition?

Answer 11

Hypogastric

Question 12

The alpha receptors on the hypogastric nerve control-

Answer 12

constriction of the internal urethral sphincter

Question 13

The beta receptors of the hypogastric nerve control-

Answer 13

Relaxation of detrusor muscle to store urine

Question 14

What are the PNS nerves in control of micturition?

Answer 14

Pelvic nerve

Question 15

What does the Ach receptor on the pelvic nerve control?

Answer 15

contraction of detrusor muscle

Question 16

What somatic nerve innervates the bladder?

Answer 16

Pudendal nerve

Question 17

What are the Ach receptors on the Pudendal nerve in control of?

Answer 17

constriction of the external urethral sphincter

Question 18

What causes Horner’s syndrome?

Answer 18

Loss of SNS connection to the eye

Question 19

What are the signs of horner’s syndrome

Answer 19

Miosis (small pupil), loss of smooth muscle tone, ptosis (drooping eyelid), Enophthalmos (sunken eye), 3rd eyelid prolapse

Question 20

What are the signs or nicotinic crisis associated organophosphate toxicity?

Answer 20

muscle twitching and tremors

Question 21

What are the signs of central stimulation associated organophosphate toxicity?

Answer 21

Anxiety, restlessness, and seizures