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Flashcards in Sympathetics Part 2 Deck (33)
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1

Which cervical sympathetic ganglion is the smallest?

middle cervical ganglion

2

Where is the middle cervical ganglion located?

at level of C6

3

T/F: The middle cervical ganglion of the sympathetic trunk carries parasympathetic info.

False

4

The middle cervical ganglia communicate with the anterior primary rami of which nerves via the gray rami communicans?

C5 and C6

5

Which glands receive branches directly from the middle cervical ganglion?

thyroid and parathyroid glands

6

What is the primary function of the thyroid branches from the middle cervical ganglion?

primarily vasomotor

7

Cardiac branches from the middle cervical ganglion make up the middle cardiac nerves. What do these nerves contribute to?

the deep part of the cardiac plexus

8

How often does the inferior cervical ganglion fuse with the 1st thoracic ganglion to form the stellate ganglion?

about 80% of the time

9

Where is the inferior cervical ganglion located?

at the level of C7 transverse process and neck of 1st rib

10

Which anterior primary rami does the inferior cervical ganglion communicate with via gray rami communicans?

C7 and C8 (also T1 if fused to form stellate)

11

What are the branches from the inferior cervical ganglion called which travel to the heart?

inferior cardiac nerves

12

What major arteries does the inferior cervical ganglion send branches to form plexuses around?

subclavian artery and its branches, namely axillary and vertebral arteries

13

How many ganglia usually exist in the thoracic area of the sympathetic trunk?

usually 11, sometimes 12

14

How many ganglia are usually in the thoracic area of the sympathetic trunk when the stellate is present and considered a cervical ganglion?

usually 10, sometimes 11

15

T/F: All thoracic nerves have a gray and a white ramus communicans.

True

16

T/F: In the superior thorax, ganglia are located on the lateral aspects of the vertebral bodies.

False; this is true of the lower part of the thorax. In the superior thorax, ganglia are located anterior to the rib heads.

17

Which sympathetic thoracic ganglia travel medially and supply structures in the thoracic cavity?

the upper 5 thoracic ganglia

18

T/F: the branches from the upper five thoracic ganglia carry postganglionic fibers and visceral efferents.

False; postganglionic fibers and visceral afferents

19

How many splanchnic nerves are associated with the lower seven segments of the thoracic sympathetic trunk? What are they?

3; greater splanchnic, lesser splanchnic, and least splanchnic nerves

20

T/F: the splanchnic nerves associated with lower seven segments of the thoracic sympathetic trunk carry fibers to plexuses in the abdominal and pelvic cavities as well as visceral afferent info.

True

21

What splanchnic nerve is formed from the 5th through 9th thoracic ganglia and terminates in the celiac ganglion?

greater splanchnic nerve

22

What splanchnic nerve is formed by the 9th and 10th (or 10th and 11th) thoracic ganglia then ends in the aorticorenal ganglion?

lesser splanchnic nerve

23

Which splanchnic nerve is formed by fibers from the 12th thoracic ganglion and terminates in the renal plexus?

least splanchnic nerve

24

Which part of the sympathetic trunk is considered retroperitoneal?

lumbar (maybe part of the thoracic too)

25

How many lumbar ganglia are usually associated with the sympathetic trunk?

4

26

Which lumbar nerves have a white ramus communicans that carries preganglionic axons into the sympathetic trunk?

the first two, sometimes the third

27

Which lumbar nerves have a gray ramus communicans?

all 5

28

How many lumbar splanchnic nerves carry preganglionic axons to the plexus surrounding the abdominal aorta?

2-4

29

Where are the sacral sympathetic trunks located?

anterior aspect of sacrum medial to the anterior sacral foramina

30

How many ganglia are usually present in the sacral sympathetic trunk?

4, sometimes 5