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PNS > Exam 4 Visceral Nervous System > Flashcards

Exam 4 Visceral Nervous System Flashcards

1
Q

Dendrites carry impulses from the viscera to cell bodies via autonomic ganglia or somatic nerves

A

Without synapse

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2
Q

Post-ganglionic fibers extend to effector organs to:

A
  1. Decrease cardiac output
  2. Constrict bronchial tree
  3. Constrict pupils
  4. Stimulate peristalsis
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3
Q

CN 3,7, and 9 supply structures in

A

the head

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4
Q

CN 10 supplies ___,_____, and ___ structures in the ___, ____, and _____

A

cardiac, respiratory, and digestive structures in the neck, thorax, and abdomen

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5
Q

S2, 3, and 4 supply

A

distal parts of the digestive and urogenital systems

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6
Q

The oculomotor nerve path goes into the orbit and synapses in

A

the ciliary ganglion

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7
Q

Greater petrosal nerve synapses in the

A

pterygopalatine ganglion

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8
Q

Chordates tympani synapses in

A

submandibular ganglion

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9
Q

Preganglionic parasympathetic fibers from the tympanic nerve pass through the tympanic plexus and become the

A

Lesser petrosal nerve

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10
Q

Type of receptors found in the carotid sinus

A

baroreceptors

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11
Q

Chemoreceptors are found in the

A

carotid body

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12
Q

Preganglionic fibers to the heart are carried in

A

superior and inferior cardiac nerves

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13
Q

Parasympathetic impulses inhibit ______ and constrict ____ arteries in the heart

A

inhibit myocardium, constrict coronary arteries

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14
Q

Preganglionic fibers in the esophagus are carried in

A

recurrent laryngeal nerves

anterior and posterior esophageal branches

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15
Q

Postganglionic fibers in the esophagus supply

A

smooth muscle fibers

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16
Q

Upper 1/3 of the esophagus is composed of

A

skeletal muscles supplied by recurrent laryngeal nerve

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17
Q

Synapses occur in the submucosal and myenteric plexuses in the

A

wall of the stomach

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18
Q

Parasympathetic stimulation in the stomach results in contraction of ______ and secretion of_____

A

contraction of smooth muscle and secretion of gastric juices

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19
Q

What type of visceral afferents are found in the vermiform appendix?

A

nociceptors

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20
Q

Motor supply to kidneys is strictly

A

sympathetic

21
Q

Parasympathetic supply to the liver and kidneys is

A

afferent

22
Q

Preganglionic fibers traveling distal colon reach the superior hypogastric and inferior mesenteric plexuses by way of the:

A

hypogastric nerve

23
Q

Fibers reaching the inferior part of the vagina may use the _______ to get there

A

pudendal nerve

24
Q

Cell bodies of sympathetic nerves are found in cord levels

A

T1-L2 or L3

25
Q

T1-L2/L3 white rami communicant are

A

myelinated

26
Q

The sympathetic trunk extends from _________ to ______

A

superior cervical ganglion to the ganglion impar

27
Q

The largest cervical sympathetic ganglia

A

superior cervical ganglion

28
Q

Lateral branches from the superior cervical ganglion are the

A

Gray Rami Communicans

29
Q

The lateral branches of the SCG communicate with anterior primary rami of:

A

C1-4 and CN 9, 10, 12

30
Q

Medial branches of SCG branches to the _____ via _____

A

branches to the heart via superior cardiac nerves that carry efferent information only

31
Q

Anterior branches of SCG follow the

A

common and external carotid arteries

32
Q

Middle cervical ganglion is the _________ and is located at _____

A

smallest cervical sympathetic ganglia and located at C6

33
Q

Thyroid branches of MCG reach the thyroid and _____ glands

A

parathyroid glands

34
Q

Cardiac branches of MCG make up

A

middle cardiac nerves

35
Q

Greater splanchnic nerve is formed from the __________ ganglia and terminates in the _____- ganglion

A

5-9th ganglia; terminates in celiac ganglion

36
Q

Lesser splanchnic formed by fibers from _____ ganglia and ends in the _____ ganglion

A

9th and 10th or 10th and 11th ganglia and ends in aorticorenal ganglion

37
Q

Least splanchnic nerve is formed by fibers from the _____ ganglion and terminates in the _____

A

12th ganglion and terminates in the renal plexus

38
Q

Distribution of preganglionic axons to the sympathetic trunk

A
  • T1-L2 enter sympathetic trunk
  • T1-T5 levels ascend
  • T5-L2 levels descend
39
Q

T1 and T2 synapse in the ______ and send info to the _____

A

Superior cervical ganglion; head and neck

40
Q

Axons carrying info for the lungs leave the cord at ______ nerves and synapse in the ________

A

T2-T4; synapse in 2nd, 3rd, and 4th thoracic ganglia

41
Q

Preganglionic fibers for the upper extremities are carried in the ____ nerves and synapse in the _____

A

T3-T7; synapse in middle cervical and inferior cervical/stellate ganglia

42
Q

Fibers influencing abdominal viscera arises from _____ levels and synapse in _______

A

T5- T12; synapse in lower thoracic ganglia.

Pass through sympathetic trunk to be carried primarily by greater, lesser, least splanchnic nerves

43
Q

Fibers influencing pelvic viscera arise form ______ levels and descend to ganglia in the _____, _____, and ____-

A

T10- L2 levels; ganglia in the lower thoracic, lumbar, and pelvic areas

44
Q

Preganglionic fibers carrying information for lower extremities are carried in the _____ nerves and synapse in the _______ ganglia

A

T10-L2 nerves; 2nd lumbar through 4th sacral ganglia

45
Q

Medial internal carotid nerve sends some fibers to the

A

pituitary gland

46
Q

Sympathetic stimulation of the heart will ____ heart rate and _____ coronary arteries

A

increase heart rate and dilate coronary arteries

47
Q

Parasympathetic stimulation of the pulmonary plexus results in

A

bronchoconstriction and increased secretion of bronchial glands

48
Q

Sympathetic fibers in pulmonary plexus are from _____ and supply the _____________

A

T2-T4 ganglia. Supply pleura, bronchial glands and musculature of lungs

49
Q

The celiac plexus begins at___

A

L1 vertebral level

PNS (24 decks)

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