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Vhvevavrvt

HBiology(Heart/Blood)

Question/TermAnswer
Heart? Pumps blood
Blood Vessels? Where blood flows
Purpose of Cardiovascular system? Bring NUTRIENTS and OXYGEN(O2) to the cells and WASTE and CARBON DIOXIDE away from the cells
Arteries? Take blood AWAY from the heart Made up of strong elastic tissue
Capillaries? EXCHANGE occurs between cardiovascular system and cells One cell thick
Veins? Blood to the heart Contains 70% of blood thinner walled than arteries
Venules? Small veins that DRAIN blood from CAPILLARIES and then JOIN the VEINS Have valves that prevent gravity from keeping blood from heart
During hemorrage, veins... Constrict and redirect blood flow
Myocardium? Heart muscle
Pericardium? Thick sac of FLUID that PROTECTS and LUBRICATES the heart
Superior Venacava? Blood from top half of the body(oxy poor)
Inferior Venacava? Blood from bottom half of body(oxy poor)
Pulmonary Veins? Carries oxygen RICH blood to left Atrium
Systole(higher number)? Atria(lub) and Ventricle's(dub) CONTRACT Increased pressure during ejection of blood from left ventricles
Diastole(lower number)? Resting phase of all chambers Lowest pressure when ventricle's relax
Hypotensive(Systolic)? Less than 95
Normal(Systolic)? 95-120
Hypertensive(Systolic)? Above 120
Hypotensive(Diastolic)? Less than 50
Normal(Diastolic)? 50-80
Hypertensive(Diastolic)? Above 80
Cardiovascular Cycle Internal? Conduction system
Sinoatrial Node(SA)? Located at top of right atrium Initiates normal heartbeat when R+L atria fill with blood If damaged, Pace-Maker implanted
Atrioventicular Node(AV)? Located at bottom of atrium by septum Impulse reaches AV w/ slight decay to allow ventricles to fill and contract 1st right the left
Cardiovascular Cycle External? Brain-Medula Oblongata-Control by Nervous System
Parasympathetic? Rest and digest
Sympathetic? Fight or flight(no digestion)
Plasma? Liquid form of blood 91% water 9% Ions, Protein(pH)
Erythrocytes(Red Blood Cells)? Carries oxygen Contains Hemegloban Heme - Iron(combines/release O2) Globan - Protein
Leukocytes(White Blood Cells)? Leuko - White Defend against disease
Neutrophils(puss)? Most abundant Leukocytes FIRST to bacterial infection
Lymphocytes? Immunity anti-bodies(recognize viruses)
Thrombocyte(Platelets)? Blood clotting(Vitamin K) Clump at sight of puncture and seal break Yellowish after fluid(serum)
Created by: spanish09
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