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Chapter 46
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Cardiovascular system
Formed by the heart, blood, and blood vessels
lymphatic system
formed by the lymphs, lympth nodes and lymph vessels
atrium
the upper chambers of the heart
ventricle
lower chambers of the heart
valves
flapes of tissue that open in only one direction
sinotrial node (SA)
a group of specialized heart-muscle cells located in the right atrium
atrioventricular node (AV)
relays the electrical impulse to the muscle cells that make up the ventricles
pulse
a series of pressure waves within an artery caused by the contractions of the left ventricle
blood pressure
the force that the blood exerts against the inside walls of a blood vessel
hypertention
high blood pressure
capillaries
a network of tiny vessels
Vein
a large blood vessel that carries blood to the heart
pulmonary circulation
where blood travels from the heart to the lungs
systemic circualtion
where blood travels between the heart and all other body tissues
atheroclerosis
a disease characterized by the buildup of fatty materials on the interior walls of the cornary arteries
lymph
excess fluid in the tissue that moves into the tiny vessels of the lymphatic system
plasma
a fluid component needed in blood
red blood cells
transport oxygen to the cells in all parts of the body
hemoglobin
an iron-containing protein
white blood cells
helps defend the body against dieseases, infections and toxins
phagocyte
a type of white blood cell
antibodies
protiens that help destroy substances that can cause diesases
platelets
essential to the formation of a blood clot
fibrin
a production of protien
blood type
a classifcation of blood determined by the type of antigen persent on the surface of the red blood cells
antigen
a substance that stimulates an immuce response
Rh factor
an antigen present on the surface of red blood cells
external resperation
the exchange of gases between the atmosphere and blood
respiratory system
function to exchange gases with the cardiovascular system
lungs
the site of gas exchange between the atmosphere and the blood
pharnx
a tube at the back of the nasal cavities and the mouth
epiglottis
a flap of cartilage that presses on the flood and covers the opening of the air passage
trachea
the windpipe
larynx
the voicebox
bronchi
a tube that leads to the lungs
bronchioles
the smallest tube
alveoli
clusters of tiny air sacs
inspiration
the process of taking air into the lungs
diaphragm
a larch skeletal muscle that seperates the thoracic cavity from the abdominal cavity
expiration
the process of releasing air from the lungs
Author
isabel
ID
140826
Card Set
Chapter 46
Description
Circulatory system
Updated
2012-03-10T17:33:22Z
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