Powerpoint 5 Flashcards
___ means natural or inherent.
Intrinsic
____ is pertaining to anything external or originating outside a structure or organism.
Extrinsic
The heart is a ___ sided muscular pump.
Two
The ____ are conduits / function as passive reservoirs.
Atria
____ are the main pressure pumps.
Ventricles
What is the circulation path through the right side of the heart?
Enters the right atrium via SVC, IVC, and Coronary sinus
- right atrium
- tricuspid valve
- right ventricle
- out infundibulum (RVOT)
- pulmonic valve
- pulmonary artery and branches
- pulmonic circulation (lungs)
What is the circulation path through the left side of the heart?
Enters left atrium via pulmonary veins from left and right lungs
- left atrium
- mitral valve
- left ventricle
- out left ventricle outflow tract (LVOT)
- arotic valve
- aorta and it’s branches
- systemic periphery circulation (cerebral, peripheral, abdomen)
The ____ ____ of the heart is responsible for initiation, propagation, and coordination of the heartbeat.
Conduction system
The ____ ____ provides bursts of electrical nerve impulses beginning at the superior portion of the atria.
SA node
What directs impulses to the AV node?
Internodal pathways
At the ____ ____, impulses slow and delay as they are sent to the bundle of HIS.
AV node
What conducts impulses to ventricles via bundle branches?
Bundle of HIS
Where does ventricular contraction begin?
At the ventricular septum, to apex, then up free walls and back to the base of the heart.
What is the part of the nervous system that regulates involuntary body functions, including the activity of the cardiac muscle, smooth muscles, and glands?
Autonomic nervous system
The subsystems _____ and _____ are reciprocally innervated, and therefore have opposite effects on the heart.
Sympathetic and parasympathetic
