Download Chapter 33 Terms

Chapter 33 Terms
1. Angina pectoris
• Pain that indicates a heart attack
• Caused by a blockage in the coronary
artery
Antibody
• Y shaped proteins
• Created by the immune system
• Clump foreign substances together in the
blood
Antigen
• A foreign substance in the body that
triggers an immune response.
Aorta
• The largest artery in the body
• Exits the heart
Arteriole
• Smallest branching of an artery
• Lead directly to capillaries
Artery
• Blood vessel that moves blood AWAY from
the heart
• Very thick walls
Atrioventricular valve
• Valves found between the ATRIA and
VENTRICLES
• Prevents backflow of blood
Atrium
• “TOP” chambers of the heart
• Move blood into ventricles
• “Measure” blood for the ventricles to pump
blood
• Connective tissue
• Medium that carries requirements to cells
• Medium that carries wastes away from
cells
blood pressure
• Pressure exerting on the INSIDE of blood
vessels
• Created by the force of the pumping heart
capillary
• Smallest blood vessels in body
• Materials can enter and exit the blood
through capillaries
cardiac cycle
• One complete cycle of the heart beat
circulatory (cardiovascular system)
• System of transport in organisms
• Moves materials to and from tissues
closed circulatory system
• Circulatory system where blood does NOT
leave the conducting vessels
diastole
• Relaxation period of the heart cycle
ECG
• ElectroCardioGram
• Graph of the electrical activity of the heart
during the cardiac cycle
Heart attack
• Situation where blood flow is blocked from
the heart tissues
• Muscle cells cannot contract
Hemoglobin
• Molecule that gives blood its red color
• Carries oxygen in the blood
lymph
• Tissue fluid that is actively being
transported back to the bloodstream via
lymph vessels
Open circulatory system
• Circulatory system where blood exits the
vessels and bathes tissues directly (more
primative)
plasma
• Liquid part of the blood (55%)
• Mostly made up of water
Portal system
• A pathway of blood that begins and ends
in capillary flow
• i.e blood flows from the intestine to the
liver and then back to the main
bloodstream
Pulmonary circuit
• Circuit of blood flow from the heart to the
lungs and back to the heart
Pulse
• “Bubble” of blood that passes through
arteries after the heart beats
Red blood cell
• Type of cell that contains the hemoglobin
• Carries oxygen
Semilunar valve (aortic valve and
pulmonary valve)
• Valves that prevent backflow of blood
Septum
Stroke
Systemic circuit
• Circulation of blood from the heart to the
body tissues and then back to the heart
again.
Systole
• Period of contraction during a heartbeat
Tissue fluid
• Fluids surrounding cells
• Contain materials that must be diffused
into the cells
• Contain waste materials (from cells) that
must be removed
Vein
Vena cava
Ventricle
Venule
• Smallest branching of a vein.
• Blood enters these from the capillaries
White blood cell