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Flashcards in cardio anat from bible Deck (26):
1

describe right phrenic nerve route

runs adjacent to brachiocephalic vein and superior vena cava

2

describe left phrenic nerve route

runs over aortic arch, along lateral side of pericardium and descends in front of the root of the lung, lies on the pericardium as it descends to reach diaphragm

3

describe route of right vagus nerve

lies on trachea, crosses posteriorly behind root of lung and branches on the oesophagus= oesophageal plexus. leaves thorax by passing along with oesophagus through diaphragm as posterior gastric nerve

4

describe route of left vagus nerve

crosses aortic arch like left phrenic, crosses posterior to root of left lung (more so than left phrenic). joins oesophagus and follows into abdomen.

5

what does left vagus nerve give off as crosses aortic arch

left recurrent laryngeal nerve.

6

what is the ligamentum arteriosum

fibrous connection between left pulm artery and aortic arch - remnant of ductus arteriosum - shunts blood from p trunk to aorta in foetus

7

aortic arch branches from ascending side

brachiocephallic trunk, left common carotid, left subclavian

8

what does the brachiocephalic trunk branch into

right common carotid and right subclavian

9

what does the left common carotid branch into

external and internal carotid arteries

10

what does the left subclavian artery branch into

divides into vertebral artery supplying brain and spinal cord and also the thyrocervical trunk supplying thyroid gland

11

surface markings of left border

3rd costal cartilage to 5th rib

12

surface markings of apex beat

5th left IC space, slightly medial to mid clavicular line

13

surface markings of inferior (diaphragmatic) surface

xiphisternum to 5th left IC space

14

surface markings of right border

3rd to 6th right costal cartilage (3cm right of midline)

15

transverse sinus of pericardium position

lies between ascending aorta and pulmonary trunk with vena cava and atria behind

16

oblique sinus of pericardium postition

pericardial space behind left atrium, separates left atrium from oesophagus

17

left side of heart vein and artery

aorta and pulm veins

18

right side of heart vein and artery

superior vena cava and pulm artery

19

crista terminalis

a ridge of modified heart muscles- separates the trabeculated auricle from smooth walled atrium (rough and smooth parts of atrium). sinoatrial node in upper half

20

musculi pectinati

forms rough part of right atrium

21

fossa ovalis

oval depression on interatrial wall - remnant of foramen ovale - allows blood to bypass lungs in foetus. immediately above inferior vena cava

22

chordae tendinae

connect papillary muscles to tricuspid valve cusps. prevents valve cusps being everted into atrium in ventricular systole

23

tricuspid valve how many cusps and names

3 - anterior posterior septal cusps

24

trabecuale carnae

muscular ridges that line interior of ventricle

25

septomarginal trabeculum

thick muscular ridge in interventricular septum to apex - bundle of his runs

26

ifundibulum

where cavity becomes smooth approaching the p valve