heart 2 Flashcards Preview

N517 Anatomy > heart 2 > Flashcards

Flashcards in heart 2 Deck (19):
1

foramen ovale

--> fossa ovale
- opening of septum secundum
- shunts blood from right atrium--> left atrium by partially bypassing the lungs (pulmonary circulation)
- increase tension LA and LL

2

ductus arteriosus

-.> ligamentum arteriosum
- connects left PA to concavity of arch of aorta
- shunts blood from pulmonary trunk to aorta`

3

ductus venosus

--> ligamentum venosum
- joins left branch of portal vein to IVC
- shunts oxygenated blood from umbilical vein (returning from placenta) to IVC
- hides behind liver

4

umbilical vein

--> ligamentum teres hepatis
- carry highly oxygenated blood from placenta to fetus
- consists of right vein

5

umbilical arteries

--> medial umbilical ligament

6

internal thoracic artery and vein

- supply diaphragm, pericardium and anastomoses in abdomen and intercostal arteries (comes from subclavian)
- becomes superior epigastric artery (continuation) behind rectus abdominal muscle

7

left vagus

- goes in between the esophagus and the trachea
- wraps around aortic arch

8

transverse pericardial sinus

- subdivision of pericardial sac lies posterior to ascending aorta and pulmonary trunk

9

oblique pericardial sinus

- pericardial sac behind the heart
- surrounded by reflextion of serious pericardium around right and left pulmonary veins and IVC

10

inferior vena cava foramina?

- T8

11

esophagus hiatus

- T10

12

aorta

-T12
- thoracic aorta becomes --> abdominal aorta

13

right thoracic duct

- drains 1/4
- right side of head and right upper limb

14

left thoracic duct

- drains 3/4
- lower part of right side

15

which cardiac veins drain into the coronary sinus?

- all but the anterior cardiac vein
- great, middle, small, and oblique cardiac veins

16

what prevents the cusps of the AV valves from being everted into the atrium?

- to prevent regurgitation of ventricular blood into the atrium, papillary muscles contract to tigthten the chorda tendineae

17

cardiac plexus

- supplies the heart with sympathetic fibers
- receives superior, middle, and inferior cervical and thoracic cardiac nerves from the sympathetic trunks and vagus nerves

18

SA node

- right SNS and PNS branches terminate in this region

19

AV node

- left SNS and PNS branches terminate in this region