Anatomy
One of the upper chambers of the heart; primarily functions as a reservoir for incoming blood
What is the Atria?
Located at the highest point of the heart, I start the electrical impulse and have a firing rate of 60-100 bpm
What is the Sinoatrial Node (SA Node)?
These tubes transport blood throughout the body.
What are blood vessels?
This is the main part of the cardiovascular system.
What is the heart?
A process where blood vessels constrict, reducing in diameter, which causes the blood pressure, vascular resistance, and body temperature to increase while blood flow and heart rate are decreased.
What is vasoconstriction?
Muscular membrane separates heart chambers medially into right and left sides
What is the Septum?
The heart’s secondary pacemaker, also part of the conduction system where electrical impulses are generated, is located in the lower right atrium.
What is the atrioventricular (AV) node?
List in order the biggest to smallest blood vessels.
What are arteries, veins, capillaries?
A measure of pulmonary blood volume pumped by the left ventricle in 1 minute
What is cardiac output?
A vein that drains deoxygenated blood from the upper body into the right atrium; also called precava.
What is the superior vena cava?
Flaps that open and close valves so blood flows in only one direction
What are Cusps?
My purpose in the heart's electrical conduction is to slow the the impulse as depolarization spreads throughout the atria
What are the Internodal Pathways?
This is the place where blood releases oxygen while receiving carbon dioxide.
What is capillary tissue?
A typical adult male heart weighs ____ and an adult female heart is slightly smaller, weighing approximately _____
What is 10–12 ounces and 8–10 ounces?
The thickest layer of muscle tissue in the heart wall.
What is myocardium tissue?
The Pulmonic Valve is also known as the
What is the Pulmonary Semilunar Valve?
The ventricles are able to serve as the third backup pacemaker for the heart through
What are the Purkinje fibers/network?
This is the place where all arteries branch out from.
What is the dorsal aorta?
The ______ view of the heart is also called the frontal view, whereas the ____ view is also called the dorsal view.
What is anterior and posterior?
A muscle that holds the tricuspid and mitral valves in place along the heart wall
What is papillary muscle?
Controls systemic blood flow and determines total peripheral resistance
What are arterioles?
At the top of the interventricular septum, I act as a passageway between the upper and lower chambers of the heart
What is the Bundle of His?
This is the number of miles of blood vessels in the human body. (to the nearest 10,000)
What is 60,000 miles?
These are metabolically active in producing the compounds needed for platelets by allowing nutrients to be released into the blood
What are squamous endothelial cells?
Fibrous connective tissue that attaches the tips of the mitral and tricuspid valves to the papillary muscles of the ventricles, thus preventing the atrioventricular (AV) valves from being pushed backward into the atria during ventricular contractions
What is chorda tendinea?