Heart (Interior View) Flashcards Preview

Anatomy Exam 1 > Heart (Interior View) > Flashcards

Flashcards in Heart (Interior View) Deck (18):
1

Coronary Sinus

Drains the Myocardium

2

Right atrioventricular Valve

Tricupid valve (3 flaps/ cusps)
Blood from the right atrium passes through this into the right ventricle

3

Pulmonary semilunar Valve

Venous blood is then propelled past this into the pulmonary trunk

4

Left atrioventricular vavle

bicuspid or Mitral (Two cusps)
Blood from left atrium passes through into the left ventricle

5

Aortic semilunar Valve

blood from the left ventricle passes through into the ascending aorta

6

Papillary Muscles

Nipple shaped
Found in each ventricle
connect to the cusps through chordae tendineae
These muscles contract and tug on the chordae tendineae in order to hold the valves CLOSED

7

Chordae Tendineae

Tough connective tissue strands
Tug on these CLOSING the valve

8

Murmur

Blood may flow back and forth across the cusps

9

Conduction system of the heart

Starts at the Sino-atrial Node
Then to the atrioventiricular node
Bundle of His
Right and left Bundle Branches
into the Purkinje Fibers causing ventricles to contract

10

Sino Atrial Node

S-A Node
wall of the right atrium
pacemaker of the heart
Initiates the heart rhythm

11

Atrioventricular Node

A-V Node
Lower part of the interatrial Septum, above the tricuspid valve

12

Atrioventricular Bundle of His

A-V node connects here
Runs within the interventricular septum

13

Purkinje Fibers

Depolarize the cardiac muscle cells, causing ventricles to contract

14

Fossa Ovalis

Wall of the right atrium
Remnant of Embryonic Foramen Ovale

15

His

A man's name

16

Foramen

Opening

17

Fossa

Ditch/ valley

18

Auricle

Ear-like