Gross Anatomy 12 - [Heart] Flashcards
What’s the location of the heart
Within mediastinum
What’s the difference between precordium and percardium
Precordium - part of chest
Pericardium - connective tissue, enclosed heart
Type of tissue in: Endo/ Myo/ Epicardium and Pericardium
Epi & Peri - connective tissue
Myocardium - cardiac tissue
Endocardium - epithelial tissue
Mention the great vessels and how many of each are there
2 Pulmonay arteries
4 pulmonary veins
1 aorta
2 vena cava
What’s the blood flow through the heart
RA —> RV —> LA —> LV
What’re the atrioventricular valves
Tricuspid (RA/RV)
Bicuspid/Mitral (LA/LV)
Name the semilunar valves
Pulmonic (RV/pulmonary artery)
Aortic (LV/aorta)
During auscultation what causes the 1st heart sound (S1/S2)
S1 - closure of AV
S2 - closure of semilular valves
What happens when the coronary blood flow diminishes
Ischemia
Angina
MI
Explain the cardiac conduction system
Electrocardiogram. Explain electrical activity
P - depolarizing, Atria
QRS - depolarizing, ventricles
T - repolarizing, ventricles
What’s the difference between cardiac output and stroke volume
Amount of blood pumped by e/ventricle in:
CO - Per minute
SV - per beat
What’s heart rate
beats/ min
What’s the difference of locations between the Adrenergic and Cholinergic receptors
Both are in SA & AV nodes
Only Myocardium in Adrenergic
Which receptor is activated by NE and ACh
Adrenergic - NA
Choligernic - ACh
