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Bio-Comp Chapter 37

Lungs, Blood, Heart, Kidneys

WordDefinition
Alveoli where oxygen and carbon dioxcide diffuses between air and blood
Respiration Order mouth/nose : pharyex : passes epiglotis : through larynx : trachea : 2 bronchi
Blood tissue made of plasma, cells and cell fragments
Plasma 55% of volume of blood: straw colored
Fragments suspended in fluid
Red blood Cells round, disk shaped; 44% of blood; produced in red marrow; no nucli; 120 day life span
Oxygen in Blood binds to hemoglobin in lungs;
Carbon Dioxide in Blood Diffuses in blood; carried to lungs
White Blood Cells protect foreign invaders; 1% of blood; has nucleus; larger
Platelets Cell fragment that create a network of fibrin; produced in bone marrow; 1 week life span
Fibrin form web over wound and trap cells to stop bleeding
Blood Types O; A; AB; B
Rh (Rhesus) Factor inherited; causes pregnancy problems (- mom carries + baby)
Arteries large thick walled muscular elastic; carry oxygenated blood AWAY from heart; make heartbeat
Artery Breakdown Arteries > Arterioles > capillaries > tissues
Capillaries microscopic; walls are one cell thick; reach almost every cell easy diffusion;
Veins carry blood BACK to heart; have valves that prevent back flow (gravity)
Atria thin upper chambers, less muscular
Ventricles lower chamber, does more work
Left Ventricle pumps to entire body
Right Ventricle pumps to lungs
Pulse serge of blood moves through radial and carotid arteries
pacemaker bundle of nerves at top of right atrium that generate and impulse that causes both atria to contract at almost the same time
EKG Electrocardiograph; measures electrical impulses
Blood pressure force on blood vessels
Systolic Pressure rises when ventricles contracts (blood is pushed through arteries
Diatolic Pressure falls when ventricles relax
Kidneys filter out wastes in blood; 1 on each side of spine;
Inner Kidneys renal medula
outer Kidneys renal crtex
Ureter tube leading from kidneys to blader
Bladder smooth muscles bag that stores urine
Urine liquid that remains in U-shaped tubule
Kidney Functions control sodium level; regulate pH; filter glucose
Created by: screamingbanjos
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