Chapter 10.2 The Heart Flashcards
The system of blood vessels that carries deoxygenated blood to the lungs and oxygenated blood back to the heart.
Pulmonary Circulatory System.
A wall of muscle that separates the right and left sides of the heart.
Septum.
The system of blood vessels that carries deoxygenated blood to the lungs and oxygenated blood back to the heart
Systemic Circulatory System.
A thin-walled chamber of the heart that receives blood from veins.
Atrium (plural; atria).
A muscular, thick-walled chamber of the heart that delivers blood to the arteries.
Ventricle.
A heart valve that prevents the back flow of blood from a ventricle into an atrium.
Atrioventricular (AV) Valve.
A valve that prevents the back flow of blood from an artery into a ventricle.
Semilunar Value.
The largest artery in the body; carries oxygenated blood to the tissues.
Aorta.
An artery that supplies the cardiac muscle with oxygen and nutrients.
Coronary Artery.
Muscle that contracts without external nerve simulation.
Myogenic Muscle.
A small mass of tissue in the right atrium that originates the impulses stimulating the heartbeat.
Sinoatrial (SA) Node.
A small mass of tissue in the right atrioventricular region through which impulses from the sinoatrial node are passed to the ventricles.
Atrioventricular (AV) Node.
A nerve fibre that branches and carries electrical impulses throughout the ventricles.
Purkinje Fibre.
A division of the autonomic nervous system that prepares the body for stress.
Sympathetic Nervous System.
A division of the autonomic nervous system that returns the body to normal resting levels following adjustments to stress.
Parasympathetic Nervous System.
