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cardiorespiratory system

TISSUERESPIRATION"transfer of energy from food taken in by the body to the cells. Involves the use of oxygen and the production of carbon dioxide."
CIRCULATORYSYSTEM"Consists of the heart
INSPIRATION"Breathing in."
PHARAYNX"is the part of the neck and throat situated immediately posterior to (behind) the mouth and nasal cavity. Because both food and air pass through the pharynx
LARYNXThe larynx houses the vocal folds, and is situated just below where the tract of the pharynx splits into the trachea and the esophagus.
TRACHEA"An almost circular tube that is approximately 20cm long and 2 cm in diameter. It carries air into the lungs via two large tubes known as bronchi."
BRONCHIBranch of the trachea leading to the left and right lungs.
BRONCHIOLESSmaller subdivisions of the bronchus.
ALVEOLIAir sacs found in the lungs at the ends of the bronchioles.
GASEOUSEXCHANGEThe transfer of oxygen through the alveoli to the red blood cells.
RESPIRATIONThe process by which oxygen is transferred into the blood and carbon dioxide is removed.
VENTILATION= Tidal volume * respiratory rate. 0.5 litre*15 breaths = 7.5 litres per minute.
VITALCAPACITYis the maximum amount of air you can breathe out after breathing in.
VO2MAXIMUMis the maximal amount of oxygen that can be taken into the body and transported to and used up by the muscles during exercise.
AVO2DIFFERENCE"Oxygen concentration difference between arterioles and venules. "
SPIROMETER"Measures your vital capacity – the amount of air you are able to breathe out after taking in a deep breath. "
HOMEOSTASIS"The maintenance of core body temperature within the normal healthy range. "
ATRIA"The two upper chambers of the heart (right and left atrium)."
VENTRICLES" The two lower chambers of the heart (right and left ventricle)."
SYSTOLE" The contraction of the atria and ventricles."
DIASTOLE" The relaxation of the atria and ventricles."
PULSE" is the pressure wave that results from the thrust that occurs when the ventricles of the heart contract. "
BLOODPRESSURE"The pressure within the arteries that is caused by the pumping action of the heart. "
DEOXYGENATEDBLOOD"Blood which is returned to the heart and carries little oxygen and a lot of the waste product from respiration (carbon dioxide). "
CAPILARIESA microscopic blood vessel with extremely thin walls.
ARTERIOLESmall blood vessel that carries blood to the carious parts of the body.
VENULESThe smallest veins adjoining the capillaries.
REDBLOODCELLSIron-rich cells which carry oxygen around the body.
WHITEBLOODCELLS"The body’s defense system
PLATELETSCells which help from blood clots to stop bleeding. They are produced in bone marrow.
HAEMOGLOBINOxygen-carrying pigment present in red blood cells.
PULMONARYCIRCULATIONBlood pumped to the lungs from the heart.
SUPERIORANDINFERIORVENACAVAWhere the veins from all of the body above (superior) and below (inferior) the heart to empty into.
TRICUSPIDVALVEValve in the heart with three cusps.
SYSTEMICCIRCULATIONMovement of blood from and to the heart.
PULMONARYVEINCarries blood to the left atrium (upper left chamber) of the heart.
BICUSPIDVALVEValve in the heart with two cusps with (points).
SINOATRIALNODE" OR PACEMAKER: Generates an electric signal that causes the heart to contract and pump blood."
CARDIOVASCULARENDURANCEThe ability to perform physical activities that rely heavily on oxygen for energy production, over a prolonged period of time.
HYPERTROHY"Enlargement of muscle."
CARDIACTOUTPUTThe quantity of blood pumped out by the heart per minute. Cardiac output = stroke volume * heart rate.
TIDALVOLUMEAmount of air breathed in and out with each breath.
OXYGENUPTAKE"Volume of oxygen breathed in and used by the body (VO2)."

Miss Wells

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