Download cardiovascular system The body system that consists of the heart

cardiovascular system
The body system that consists of the
heart, blood vessels, and blood; also
called the circulatory system.
ventricle
heart
A hollow, muscular organ that pumps
blood throughout the body.
valve
atrium
Each of 2 upper chambers of the heart
that receives blood that comes into
the heart.
pacemaker
Each of the 2 lower chambers of the
heart that pumps blood out of the
heart.
artery
A blood vessel that carries blood away
from the heart.
A flap of tissue in the heart or a vein
that prevents blood from flowing
backward.
capillary
A tiny blood vessel where substances
are exchanged between the blood and
the body cells.
A group of cells located in the right
atrium that sends out signals that
make the heart muscle contract and
that regulates heart rate.
vein
A blood vessel that carries blood back
to the heart.
aorta
The largest artery in the body;
receives blood from the left ventricle.
diffusion
coronary artery
An artery that supplies blood to the
heart itself.
blood pressure
pulse
The alternating expansion and
relaxation of an artery wall as blood
travels through an artery.
plasma
The process by which molecules
move from an area of higher
concentration to an area of lower
concentration.
The pressure that is exerted by the
blood against the walls of blood
vessels.
The liquid part of blood.
red blood cell
A cell in the blood that takes up
oxygen in the lungs and delivers it to
cells elsewhere in the body.
hemoglobin
An iron-containing protein that binds
chemically to oxygen molecules;
makes up most of the red blood cells.
white blood cell
A blood cell that fights disease.
platelet
A cell fragment that plays an important
part in forming blood clots.
lymph node
lymphatic system
A network of veinlike vessels that
returns the fluid that leaks out of blood
vessels to the bloodstream.
atherosclerosis
lymph
The fluid that the lymphatic system
collects and returns to the
bloodstream.
heart attack
A small knob of tissue in the lymphatic
system that filters lymph, trapping
bacteria and other microorganisms
that cause disease.
A condition in which an artery wall
thickens as a result of the buildup of
fatty materials.
hypertension
A disorder in which a person’s blood
pressure is consistently higher than
normal; also called high blood
pressure.
A condition in which blood flow to part
of the heart muscle is blocked,
causing heart cells to die.
HUMAN BIOLOGY AND HEALTH
CHAPTER 3
SECTIONS 3.1-3.4
FLASHCARDS