Vocab Flashcards
(48 cards)
Stroke Volume
The amount of blood pumped out of the heart with each contraction
Respiratory System
A system of organs (the lungs and respiratory passageways) that collects oxygen from the external environment and transports it to the bloodstream
The inferior chambe of the heart hat receives blood from its corresponding atrium and, in turn, forces blood into the arteries
Ventricle
Atrioventricular (AV) Node
A small mass of specialized cardiac muscle fibers, lovated in the wall of the right atrium of the heart, that receives heartbeat impulsesfrom the sinoatrial node and directs them to the walls of the ventricles
Atrium
The superior chamber of the heart that recieves blood from the veins and forces it into the ventricles
Vessels that transport blood from the capillaries toward the heart
Veins
Blood
Fluid that circulates in the heart, arteries, capillaries, and veins, carries nutrients and oxygen o all parts of the body, and also rids the body of waste products
Small terminal branches of an artery, which end in capillaries
Arterioles
The process of actively or passively relaxing the inspiratory muscles to move air out of the body
Expiration
Heart Rate (HR)
The rate at which the heart pumps
Blood Vessels
Network of hollow tubes that circulates blood throughout the body
The smallest blood vessels, and the site of exchange of chemicals and waer between the blood and the tissues
Capillaries
A system of the body composed of the cardiovascular and respiratory systems
Cardiorespiratory System
Cardiac Output (Q)
Heart rate X stroke volume, the overall performace of the heart
Cardiovascular System
A system of the body composed of the heart, blood, and blood vessels
Sinoatrial (SA) Node
A specialized area of cardiac tissue, located in the right atrium of the heart, which initiates the electrical impulses that determine the heart rate; often termed the pacemaer of the heart
Venules
The very small veins that connect capillaries to the larger veins
Vessels that transport blood away from the heart
Arteries
The superior chamber of the heart that recieves blood from the veins and forces it into the ventricles
Atrium
Heart rate X stroke volume, the overall performace of the heart
Cardiac Output (Q)
Arterioles
Small terminal branches of an artery, which end in capillaries
A small mass of specialized cardiac muscle fibers, lovated in the wall of the right atrium of the heart, that receives heartbeat impulsesfrom the sinoatrial node and directs them to the walls of the ventricles
Atrioventricular (AV) Node
The space in the chest between the lungs that contains all the internal organs of the chest except the lungs
Mediastinum
The highest rate of oxygen transport and utilization achieved at maximal physical exertion
Maximal Oxygen Consumption (VO2max)
