Chapter 1 Flashcards
A muscular double pump consists of…
- Pulmonary Circuit
2. Systemic Circuit
Pulmonary Circuit
Takes blood to and from the lungs. On the right side
Systemic Circuit
Vessels transport blood to and from body tissues. On the left side. Has greater resistance
3 Functions of the heart…
- Generate blood pressure
- Generates blood supply
- Oxygen and nutrient delivery
The position of the heart is…
- Anterior to the thoracic vertebrae
- Poster 2/3 to the sternum
- Laterally borders the lungs
The position of the apex is…
To the left of the midline
The superior chambers are…
The right and left atria
The inferior chambers are…
The right and left ventricles
The left ventricle is…
3x thicker than the right ventricle
Coronary sulcus’ are…
grooves
The left/right auricles are…
small muscular appendages of each atrium
The 4 valves are…
2 atrioventricular (A-V) valves 2 semilunar valves
The 2 atrioventricular (A-V) valves consists of…
- Right A-V or tricuspid valve
2. Left A-V or bicuspid valve
The 2 semilunar valves consists of…
- Left semilunar or pulmonic valves
2. Right semilunar or aortic valve
The pericardium is…
the two primary layers (double walled sac)
The pericardium consists of two layers:
- Fibrous layer pericardium
2. Serous layer pericardium
Fibrous layer pericardium is…
strong, outer most layer of connective tissue
The serous pericardium forms two layers:
- Parietal pericardium
2. Visceral pericardium
Parietal pericardium is…
outer lines of the fibrous pericardium
Visceral pericardium is…
inner lines, covers the heart tissue
Epicardium
Visceral (thin, smooth) layer of the serous pericardium
- Outermost
Myocardium
consists of cardiac muscle.
Middle, largest layer
Endocardium
Endothelium on connective tissue
Innermost layer
Prevents leakage into other layers
Cardiac muscle tissue forms…
a thick layer called myocardium
Cardiac muscle cells are…
cardiomyocytes
Cells join at…
Intercalated discs