PNS

Question 1

Neurotransmitter of Parasympathetic Nervous System is,

Answer 1

AcetylCholine

Question 2

Ninth Cranial Nerve is,

Answer 2

Glossopharyngeal Nerve

Question 3

Third Cranial Nerve is

Answer 3

Oculomotor Nerve

Question 4

Seventh Cranial Nerve is

Answer 4

Facial Nerve

Question 5

Physiological responses of the Parasympathetic Nervous System are collectively called the ———- response.

Answer 5

rest and digest

Question 6

Physiological responses of the Sympathetic Nervous System are collectively called the ———- response.

Answer 6

Fight-or-flight

Question 7

Tenth Cranial Nerve is

Answer 7

Vagus Nerve.

Question 8

Effect of Sympathetic Nervous System is stimulant on all body parts except

Answer 8

Gastrointestinal Tract,

Question 9

Neurotransmitter of Sympathetic Nervous System is

Answer 9

Adrenaline.(Epinephrine)

Question 10

The vagus nerve regulates major elements of which part of the nervous system?

a) Parasympathetic nervous system
b) Enteric nervous system
c) Sympathetic nervous system
d) Central nervous system

Answer 10

a) Parasympathetic nervous system

Question 11

Which of these is not a feature of postganglionic neurons in the sympathetic nervous system?

a) Originating distal to the effector organ
b) Unmyelinated
c) Short
d) Noradrenergic

Answer 11

c) Short

Question 12

Activation of the sympathetic nervous system leads to the ‘fight and flight’ response. Which of these is not part of that process

a) Vasodilatation in skeletal muscle
b) Sweating
c) Bladder relaxation
d) Increased gut motility

Answer 12

d) Increased gut motility

Question 13

What is the function of myenteric plexus?

Answer 13

Control digestive tract motility

Question 14

What is the function of submucosal plexus?(Meissner’s plexus)

Answer 14

1. Regulate GIT blood flow

2. Control epithelial cell function

Question 15

Co-transmitters for excitatory neurons?

Answer 15

Ach and tachykinins

Question 16

Co-transmitters for inhibitory neurons?

Answer 16

nitric oxide, vasoactive intestinal peptide (VIP) and ATP

Question 17

What is co-transmitter?

Answer 17

a substance that is released from a nerve ending along with primary neurotransmitter in order to modify the action of the latter.

Question 18

What causes anticholinergic toxidrome?

Answer 18

blocked muscarinic receptor thus prevent interaction with ACh

Question 19

What anticholinergic toxidrome always associated with?

Answer 19

drug overdose,e.g. antihistamine,tricyclic antidepressant

Question 20

What happens in cholinergic toxidrome?

Answer 20

over stimulation of cholinergic receptor (inhibition of AChesterase which breaks down ACh)

Question 21

Adrenergic nerve fibre use which Nts?

Answer 21

E,NE,dopamine

Question 22

Which nts are major in preganglionic nerve fiber?

Answer 22

ACh

Question 23

which nts are major in sympathetic postganglionic nerve fiber

Answer 23

NE

Question 24

NE and E are metabolised by what enzymes?

Answer 24

MAO(monoamine oxidase) , COMT( catechol-o-methyl transferase)

Question 25

excitatory neuron causes what ?

Answer 25

it is a depolarizing neuron so it leads to release of nts and induce action potential

Question 26

inhibitory neuron causes what?

Answer 26

hyperpolarizing neuron so it reduces release of nts and prevent action potential