EXAM ABT CIRCULATORY Flashcards
PURPOSE OF CIRCULATORY SYSTEM
MADE UP OF BLOOD VESSELS THAT CARRY BLOOD AWAY FROM AND TOWARDS HEART
CARRIES OXYGEN, NUTRIENTS AND HORMONES TO CELLS AND REMOVE WASTE PRODUCTS LIKE CO2
DESCRIBE PRESSURE OF ARTERIES BS BEINS CAPILLARY BEDS
PRESSURE OR
ARTERIES=HIGH
VEINS= LOWEST
CAPP= LOW
FARTHER AWAY FROM THE HEART THE LOWER THE PRESSURE
VEINS R A LOT BIGGER THAN CAPP. BENEFICIAL FOR DIFFUSION
where is capp beds located and purpose
THROUGHOUT THE BODY; TISSUE ORGANS WHERE IT NEEDS BLOOD SUPPLY. NUTRIENT SUPPLY
DIFFUSION OF OXYGEN
vein vs artery anatomy and pressure ( what r varicose veins)
arteries: thicker
vein: lot thinner
arteries stands more pressure and velocity while vein doesnt.
varicose veins are tangled, swollen veins when the valves inside veins do not work properly, blood flows backward and pool in the veins. stretched and enlarged
what is LVH what happens and why is it bad
left ventricular hypertrophy. enlargement and thickening of the walls of ur heart’s main pumping chamber (left ventricle) its bad bc it loses elasticity leading to increased pressure to allow heart to send blood to the rest of the body
what do the lub-dub sounds describe
lub: force blood against closed AV valves
dub: force blood against semilunar valves
heart valve disease
when the valves in the heart that controls blood flow gets damaged
stenosis of blood vessels vs plaques
stenosis is the narrowing if a blood vessel due to inflammation or injury while plaque is a buildup of cholesterol fat and other stuff on the inner walls of blood vessels
primary function of red blood cells
TRANSPORTS OXYGEN FROM LUNGS TO BODY TISSUE AND TO CARRY CARBON DIOXIDE FROM TISSUES BACK TO LUNGS. TRANSPORTS EVERYTHING NO GAS EXCHANGE NO RESPIRATORY SYSTEM
PATH OF AIR INTO LUNGS
nasal cavity-trachea- bronchi-bronchioles-alveoli
cellular respiration vs breathing
cellular respiration happens within mitochondria of cells. converts glucose and oxygen i to energy
breathing is essential to cellular respiration by providing oxygen needed to produce energy. obtain oxygen release co2
how r alveoli to transfer oxygen/co2 into capillaries from exhalation and inbalation
diffusion pf ox into capillary glands
alveoli transfers by the vacuum process
during inhalation oxygen enters the alveoli and diffuses later on to the capillaries, and on exhalation co2 gets expelled from lungs.
do our lungs collapse upon exhalation what would happen
no bc they would stick to the bronchi and they would collapse. There’s always left over air its called residue volume
bohr effect l. describe diffusion of oxygen and co2 lung capillary begs vs. capillary bags near organs and tissues
bohr effect describes hemoglobin’s lower affinoty for oxygen due to carbonic acid (increases in co2 in blood) and or decreased blood pH
the bohr effect is a phenomenon where as the pH of the blood lowers, the hemoglobins affinity for oxygen (the protein in red blood cells that carries oxygen) reduces. in the lungs, oxygen diffuses across the alveolar membrane to capillary beds surrounding alveoli while the diffusion of oxygen and co2 diffuses to the capillaries surrounding tissue
describe why pneumonia and bronchitis reduce oxygen in the blood
pneumonia makes ur lung’s air sacs (alveoili) to be filled with fluids mucus pus that restricts flow of air and decrease O2
Bronchitis is an inflammation of the bronchial tubes, this causes tubes to become constricted and narrowed, haed for air to flow and for oxygen to be absorbed to the bloodstream
