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Circulatory system

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hasanahatesscience's version from 2015-11-13 01:30

Section 1

Question Answer
what is the function of the circulatory systemto transport materials within the organism, distribute HEAT and MAINTAIN BODY FLUIDS
materials that are transported includeNUTRIENTS: oxygen, glucose WASTES: carbon dioxide HORMONES: insulin
cardiac circulationmovement of blood within HEART
pulmonary circulationmovement of blood BETWEEN HEART AND LUNGS
systemic circulationmovement of blood to REST OF THE BODY
three components of the circulatory systemheart blood vessels and blood
heartmuscular pump, contains 4 chambers UPPER CHAMBERS ARE CALLED ATRIUM and LOWER CHAMBERS are CALLED THE VENTRICLES
heart is divided into the RIGHT SIDE AND LEFT SIDE BY SEPTUM
DEOXYGENATED BLOOD RETURNS TO HEART by the SUPERIOR VENA CAVA
OXYGENATED BLOOD LEAVES THE HEART BY THE AORTA
blood vessels containarteries capillaries and veins
arteriescarry blood away from the heart. have strong THICK WALLS to WITHSTAND HIGH PRESSURE
capillariessmallest blood vessel. location where exchange between blood and cells occurs
veinscarry deoxygenated blood toward the heart. they have valves to prevent back flow of blood. U CAN SEE THIS ON UR WRIST
blood has three main functions1.transportation, 2. protection and 3.regulation. there are red blood cells, platelets and white blood cells.
memorize

Section 2

Question Answer
composition of blood liquid phase and solid phase
liquid phase (plasma) 55% of blood volume. water proteins sugars minerals waste products
solid phase red blood cells are 44% of blood volume. contains HEMOGLOBIN to CARRY OXYGEN AND CARBON DIOXIDE
solid phase white blood cells1% of blood volume. defends body against infections
plateletsclot blood when blood vessel breaks
memorize

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