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Flashcards in thorax 2 Deck (27):
1

cardiac plexus

- fibers from sympathetic trunk and vagus nerves
- right sympathetic SA node
- left sympathetic AV node

2

aortic arches

- 2 common carotid
- esophageal
- 2 bronchial (arterial supply to lung)

3

Which side has the longer intercostal artery?

- Right intercostal artery

4

what happens to the intercostal nerves?

- enter white and gray rami communicates --> synpased in sympathetic chain --> gray rami (post ganglionic) go to skin and supply deep structures, but some form cardiac, esophageal plexus

5

right thoracic duct

- drains 1/4 of upper quadrant of body (thorax, upper limb, head and neck of right side)
- empties into junction of right internal jugular and subclavian veins

6

left thoracic duct

- drains 3/4 of the lower body (lower limbs, pelvis, abdomen, left thorax, lefter upper limb, left side of head and neck)
- passes through aortic opening of diaphragm and ascends through posterior mediastinum between aorta and azygous vein

7

stellate ganglion (cervicothoracic)

- formed by fusion of inferior cervical ganglion with first thoracic ganglion

8

lesser splanchnic nerve

- arises from T10-11 thoracic sympathetic ganglia and ends aorticorenal ganglion
- contain preganglionic GVE with cell bodies in intermediolateral cell column) of spinal cords and GVA fibers with cell bodies in dorsal root ganglia

9

myelinated preganglionic fibers

-synpase pre-aortic ganglion

10

where is the thoracic duct located?

- between azygous vein and aorta

11

least splanchnic nerve

- arises from T12 sympathetic ganglia and ends in renal plexus
- contain preganglionic GVE with cell bodies in intermediolateral cell column) of spinal cords and GVA fibers with cell bodies in dorsal root ganglia

12

greater splanchnic nerve

- T5-9
-contain preganglionic GVE with cell bodies in intermediolateral cell column) of spinal cords and GVA fibers with cell bodies in dorsal root ganglia

13

what type of cell bodies are found in the CN 9 or 10 ganglion?

-pseudounipolar

14

where do the afferent fibers enter?

- pseudounipolar vagal ganglion

15

T1-4 sympathetic fibers

- some ascend and synapse in superior, middle, inferior cervical ganglia and return
-come back as postganglion SNS fibers will join plexuses

16

Where do afferent fibers of PNS go?

- go back through dorsal root ganglia to the medulla oblongata

17

where do the afferent fibers of the SNS go?

- go back through dorsal root ganglia of the sympathetic chain

18

where does the superior epigastric artery enter the abdomen?

- behind the rectus abdominus muscles

19

What are the three muscles of the abdomen?

1. internal oblique
2. external oblique
3. transversus abdominus

20

where do the nerve fibers and the artery run?

- between the transversus abdominus and the internal oblique muscles

21

what is special about the linea alba?

- not very vascularized
- will not heal well

22

what are the first pair of arteries from the abdominal aorta?

- inferior phrenic artery (supply interior surface of diaphragm)

23

what lies in between the right and left crus of the diaphragm?

- esophageal hiatus

24

what is the significance of the median arcuate ligament?

- it is connective tissue that holds the diaphragm to the vertebrae
- continuation of the insertion of the diaphragm

25

Vena cava hiatus

- lies in central tendon of diaphragm at level T8
- transmits the IVC and right phrenic nerve

26

Esophageal hiatus

- lies in muscular part of diaphragm (right crus) at level of T10
- transmits esophagus and anterior and posterior trunks of vagus nerves

27

Aortic hiatus

- lies behind/between two crura at level T12
- transmits aorta, thoracic duct, azygos vein, *greater splanchnic nerve