Exam 1 Content Support Drawings Flashcards
Intercostal nerves are ventral rami of thoracic spinal nerves ________
T1-T11
T12 ventral rami is the ________________
subcostal n. (below 12th rib)
Intercostal nerves course in _____________ of ribs with intercostal arteries and veins
test q
costal groove
**note: from superior to inferior it goes VAN
The intercostal VAN gives off a collateral branch for each, which courses along the superior border of the rib below. From superior to inferior, the order is opposite- so, ___________________ NAV
collateral intercostal
Intercostal and collateral blood vessels and nerves course between the……
internal and innermost intercostal muscles
All arteries are bilateral EXCEPT ___________________, which is only on the right side
brachiocephalic trunk
The costocervical trunk from the subclavian a. has 2 branches. What are the 2 branches?
1) deep cervical a.
2) supreme intercostal a.
The supreme intercostal gives rise to the _______________________ on posterior wall of thorax
1st 2 posterior intercostal arteries
The posterior intercostals and subcostal arteries arise from the….
thoracic aorta
Bronchial arteries supply root of lung and lung tissue and are branches from thoracic aorta ______ level
T3
______________ arteries is the main supplier to anterior wall of thorax
internal thoracic
What are the internal thoracic artery branches?
Test q
1) anterior intercostal a.
2) pericardiophrenic a. and its terminal branches
2a) superior epigastric a.
2b) musculophrenic a.
The 1st 6 anterior intercostal arteries (T1-T6) are branches of the __________________. The remainder, T7-T11, are branches of the _________________
internal thoracic a., musculophrenic a.
T/F: the subcostal is a posterior branch of the thoracic aorta only- there is no corresponding anterior branch
true!
Veins of the anterior wall of thorax are same as arteries except the internal thoracic vein drains into the…..
brachiocephalic v.
The phrenic n. courses with the….
pericardiophrenic a. and v.
The azygous system drains the….
posterior thoracic wall
Most posterior intercostal and bronchial veins on R side drain into….
azygous v.
Most posterior intercostal and bronchial veins on L side drain into….
accessory hemiazygous and hemizygous v.
The accessory hemiazygous and hemiazygous v. drain into the….
azygous v.
The azygous and hemiazygous veins course through the….
aortic hiatus of the diaphragm
What are the contents in the caval opening of the diaphragm?
IVC and R phrenic n.
What are the contents of the esophageal opening of the diaphragm?
-esophagus
-CN X (vagus n.)
-esophageal a. and v.
What are the contents of the aortic opening of the diaphragm?
-aorta
-R azygous v.
-L hemiazygous v.
-thoracic duct
