Superior of Posterior Mediastinum Flashcards Preview

JK Hu A&P > Superior of Posterior Mediastinum > Flashcards

Flashcards in Superior of Posterior Mediastinum Deck (58):
1

Sup/Infer Mediastinum is divided by

sternal angle (angle of louis)

2

sternal angle is at the level of:

t4/t5

3

Inferior is divided into

ant/med/post

4

directly behind sternum would be:

thymus fat

5

ant to post behind sternum

left brachiocephalic

6

left brachiocephalic passes over:

3 branches off aorta trunk

7

3 main branches of aorta move:

ant to post

8

Ant to Post the main structures are :

TBSATE (tenor bass, sop alto, teach everyone)

9

Left Vagus nerve is grouped in next to:

Left Common Corotid (post of phrenic, ant of left recurrent laryngeal)

10

Left phrenic is grouped in next to:

left brachiocephalic (most ant nerve) ph in phrenic and phalic same goes for right side, btw

11

upper part of the esophagus is:

skeletal muscle

12

lower esophagus is:

both skeletal and smooth

13

post ganglion in esophagus is:

in the wall of the organ

14

mucosa is made of :

stratified squamous (non keratonized)

15

lymph drains from bronchi to

nodes located in the hilum

16

there are also lymph nodes in the

biforcation of the bronchi

17

phrenic nerve innervates the:

diaphram

18

the diaphram is

skeletal muscle under somatic motor control

19

there is an area in the brain that unconsciously fires the diaphram, but it is;

under somatic control

20

the vegus nerve on the left descends _____to the aorta, and _______ to the subcalavian on the right;

arch of the aorta, anterior to the subcalavian

21

descending vegus: a component loops under and back up to the neck, called:

recurrent laryngeal: major motor nerve to the muscles of the larynx (

22

after the recurrent laryngeal splits, the rest of the vegus continues down carrying:

preganglionic, parasympathetic fibers, some visceral afferent information (not pain, just sensory info about pressure, etc)

23

the vegus descends:

posterior to the root of the lung

24

there are several cardiac nerves in the mediastinum that act to regulate the heart: branches from the vegus are:

sympathetic (postganglionic) increase output: preganglianic parasympathetic form a plexus called cardiac plexus (over arch of aorta

25

superficial on right side, deep cardiac plexus is on:

the bifurcation of the trachea

26

posterior mediastinum includes:

azygos veins, thoracic aorta (descending), thoracic duct, esophagus, sympathetic chain

27

thoracic sympathetic chain is:

paravertebral ganglia, communicating branches with spinal nerves,

28

there is a ganglion associated with each;

cranial nerve

29

the communication between ganglion and cranial nerve is known as

rami communicantes

30

azygos system; main system is on the:

right side

31

azygos veins loop around and drain into the:

svc

32

on the left side, there is a similar system:

5-8 join and form the accessory hemiazygos,

33

the accessory hemiazygos drains:

4,6,7,8,9,10,11

34

first four intercostals drain into:

into left brachiocephalic or an alternate location

35

there is a system of veins around the ____ that communicate and run all the way up to the ____

vertebral column, skull

36

the plexus around the vertebrate can allow:

blood, pathogens, etc can move up plexus to the skull (breast cancer) via azygos

37

azygos vein plexus allow for ____ to move to brain, etc

cancer

38

post mediastinum has lymphatic system called:

thoracic duct

39

thoracic duct collects all lymph from legs, lower abdominal column called:

cersternic chilai sac behind beginning of diaphram

40

thoracic duct ascends ______ the esophogus, ____ of azygos vein, and ____ of descending aorta

behind, left of azygos, right of descending aorta

41

the thoracic duct then _____ l brachiocephalic, ____ jugular vein, and into venus angle

behind, behind

42

collect lymph from ____ of thoracic wall, part of left lung, gi tract

left side, most all of lymph on left side and below neck

43

for thorax on right there are _____

bronchomediastinal ducts that drain to right lymphatic duct at right venous angle (otherwise thoracic collects everything below neck)

44

esophogus is ____ to trachea, and

posterior

45

runs to the ____ of the descending aorta, to the ____ of the azygos, and through the _____ of the diaphram at ____

right, left, hiatus of diaphram 10th thoracic vertabrae

46

runs to the ____ of the descending aorta, to the ____ of the azygos, and through the _____ of the diaphram at ____

right, left, hiatus of diaphram 10th thoracic vertabrae

47

______ atrium is ____ to the esophagus

left anterior

48

blood supply of esophogus is:

1st couple intercostal vessels, then plexus,

49

venus drainage of esophogus is:

back into azygus system

50

vegus runs ____ to the lung and then, at the base of the esophogus, the left goes _____, the right goes______

posterior to the root of the lung, anterior, posterior and form vegal trunks

51

greater splanchinic nerve:

preganglionic, lateral horn cell, motor, white communicating ramus, doesn't communicate

52

doesnt carry post ganglionic, synapse in abdomen at preganglionic synapses (celiac) on thorax

prevertebral on

53

lesser from lateral horn cells :

T10. T11

54

least splanchnc:

T12

55

splanchnic nerves

visceral sensory fibers coming back, following dorsal root, synapse in dorsal horn (pain fibers)

56

cardiac nerves:

some axons come onto chain, ascend to cervical ganglion, synapse, then cardiac nerves descend return back to the neck,

57

visceral branches in the thorax are all:

postganglionic, no sympathetic ganglia in walls of those organs

58

these are not communications to spinal nerves:

they go out to the wall, limbs, etc, from their roots, and they are branches of chain that distribute within the body cavities