topic 23

Question 1

what are the branches of tr. costocervicalis

Answer 1

a. scapularis dorsalis(continuation
a. vertebralis thoracica (aa. intercost dors 2-3)
a. cerv prof (first branch!)
(a. intercost dors 1)

Question 2

what is the last branch of subclavia, and what are its branches

Answer 2

a. cerv. supf
- r. deltoideus
- r. ascendens (running cranial)
- r. prescapularis
- a. suprascapularis
- r. acromialis

Question 3

a. vertebralis termination, and supply blood to what

Answer 3

divides, one branch anastomose with r. communicans anast cup a. occipitalis, other branch goes dorsally to anast with a. cerv. prof

r. spinalis to spial chord, meninges and cervical vertebrae

Question 4

what does the a. cerv prof supply blood to

Answer 4

cervical musculature

Question 5

origin of n. phrenicus

Answer 5

(C4)C5-C7, going to diaphragma

Question 6

explain the thoracic portion of n. vagus

Answer 6

tr. vagalis dorsalis et ventralis to esophagea
dors: made by dorsal branches of L+R n. vagus
ventr: made by ventral branches of L+R n. vagus

Question 7

origin of n. depressor

Answer 7

n. vagus

Question 8

level where the tr. vagosymp split

Answer 8

ggl. cerv medii

Question 9

what do you need to see before opening the thoracic cavity

Answer 9

a. cerv supf

Question 10

what are the branches and continuation of thoracica interna

Answer 10

a. epigastrica cranialis is the continuation

• a. pericardiophrenica
• Medial/midline: r. thymici (cran) / r. mediastinalis (caud)
• r. perforans (out from sternum external)
• (ventral intercost aa. Cut away with ribs)
• a. musculophrenicus (with nerve)

Question 11

what are the branches of subclavia sinistra

Answer 11

vertebralis
tr costocerv
thor int
cerv supf

Question 12

what are the branches of brachiocephalica

Answer 12

first carotis communis sin then dex, subcl dex is the continuation

Question 13

what are the branches of thoracic aorta

Answer 13

brachiocephalica
subclavia sin
bronchoesophagea
intercost dors 4-

Question 14

what is the last branch of intercost dors (caudally) called

Answer 14

A. costoabdominalis dorsalis

Question 15

termination of a. intercost dors

Answer 15

End by anastomose with aa. Intercostales ventrales and a. musculophrenicus

Question 16

how to start the nerve dissection

Answer 16

1. Find tr.(v) costocervicalis - ring
2. Just above find the ggl. Stellatum with ansa subclavia
3. Ansa subclavia ender i media ggl. With vagus coming out of it going to esophagus splitting to dorsal and ventral part (find espphagus and trace caud to heart to find dorsal vagus on it)
4. Befor ggl media: vogosymp trunk - find in neck if unshure about vagus and pull: you find the trunk prox to the carotid arteries by origin!
5. Symp tr from ggl stellatum clise to vertebrea

Question 17

what big nerves are here irrelevant and should be cut away

Answer 17

Th1+2!! Cut away, part of brachial plexus

Question 18

what are the ggl along symp tr called

Answer 18

Paravertebral ganglia

Question 19

Ggl. Stellatum aka

Answer 19

Ggl. Cervicothoracicum,

here also find N. vertebralis running with artery

Question 20

ansa subl location

Answer 20

Between Ggl. Stellatum and Ggl. Cervicale medii

a. subclavia run between the right and left ansa

Question 21

L/R recurrent vagal nerves around which structures

Answer 21

L: aorta
R: tr. costocerv