Term
| how does tissue fluid volume effect CO? |
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Definition
| decreases CO; less blood in circulation bc all the fluid is in tissues, less volume in heart |
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Term
| how does urine volume effect CO? |
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Definition
| more urine will decrease CO, less urine will increase CO |
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Term
| how does vasoconstriction effect CO? |
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Definition
| increases CO; sympathetic stimulation |
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Term
| how does the skeletal muscle pump effect CO? |
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Definition
| increases CO; causes more blood to be delievered to the heart |
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Term
| how does an increase in breathing effect CO? |
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Definition
| increases CO; will cause an increas in pressure, more blood delievered to the heart |
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Term
| how does an increase in total peripheral resistance effect CO? |
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Definition
| will decrease CO; inversely propaortional, impedance to flow, less blood delievered to heart |
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Term
| how does Frank-Starlings Law effect CO? |
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Definition
| greater filling, more stretch, greater volume of blood, will increase CO bc of increase in stroke volume |
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Term
| sympathetic control of HR effect CO? |
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Definition
| increases CO; increases HR |
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Term
| parasympathetic control of HR effect CO? |
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Definition
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Term
| what are the 2 different formulas for CO? |
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Definition
| CO = SV x HR and CO = MAP / TRP |
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Term
| centers in medulla oblongata are |
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Definition
| respiration, heart rate, and vasomotor centers |
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Term
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Definition
fluid out-fulid in
HPc+OPt - HPt+OPc |
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Term
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Definition
fluid in - fulid out
HPt+OPc - HPc+OPt |
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Term
| how osmorecetors in hypothalamus effect BV |
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Definition
cause thirst
cause postierior pituitary to relesase ADH |
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Term
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Definition
renin-angiotensin-aldosterone sysytem
aldosterone causes Na+ and H2O retention by the kidneys |
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Term
| how the heart effects BV? |
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Definition
| atriopeptin, goes to kidneys and promotes salt and water secretion by the kidneys |
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Term
| formula for stroke volume? |
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Definition
| EDV-ESV, end diasolic volume minus end systolic volume (think when you squeeze a balloon filled with water) |
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Term
| blood flow diffiniton and formula? |
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Definition
volume of blood flowing in specific period of time
F=(P1-P2)/R
blood flow=change in pressure/resistance |
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Term
| how vasoconstiriction effectrs blood flow? |
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Definition
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Term
| how vasodilation effects blood flow? |
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Definition
| increases blood flow; 1 to 2 will increase blood flow 16x |
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Term
| how autonomic nervous system effects blood flow |
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Definition
PNS>relaxes>increased flow
SNS>constricts>decreased flow |
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Term
| how hormones and chemicals effect flow? |
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Definition
| epinephrine will constrict, decreases flow |
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Term
| how H+, CO2, and K+ effect blood flow? |
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Definition
| dilation; increase blood flow |
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Term
| deffinition and formula for resistance? |
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Definition
resistance to flow by vessels and blood
R=vessel length x viscosity / A(cross sectional area) |
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Term
| increased resistance with length of vessel? |
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Definition
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Term
| increased resistance with radius of blood vessel? |
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Definition
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Term
| increased resistance with total cross sectional area? |
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Definition
| less cross sectional area |
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Term
| increased resistance with viscosity of blood? |
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Definition
| increased RBC's and colloid |
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Term
| order of fixing high blood pressure? |
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Definition
1. loose wieght to decrease blood vessel length
2. remove salt from diet, will decrease BV
3. take a water pill, decrease BV and incrased peeing
4. beta blockers, relaxes blood vesseles, less resistance
5. Ca+ channel blockers, relaxes blood vesseles, 16x more flow |
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Term
| blood pressure, formula and definition? |
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Definition
force of blood (mmHg) against blood vesseles when heart contracts
BP = F x R |
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Term
| effect of increased BV on BP? |
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Definition
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Term
| effect of decreased vessel elasticity on BP due to athrosclerosis? |
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Definition
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Term
| effect of increased CO on BP? |
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Definition
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Term
| effect of increased blood viscosity resistance on BP? |
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Definition
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Term
| effect of increased gravity on BP? |
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Definition
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Term
| effect of increased hydrostatic pressure on BP? |
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Definition
| increases BP; increased pressure of water |
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Term
| effect of increased pressure on the baroreceptors due to high blood pressure? |
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Definition
| stretches receptors, increases impulses to medulla, stimulatates cardio inhibitory centers, decrease HR and CO, arteriole dilation, decreases blood pressure |
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Term
| location of osmoreceptors? |
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Definition
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Term
| location of baroreceptors |
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Definition
| in walls of aortic arch and carotid artery |
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Term
| location of chemoreceptors? |
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Definition
| in carotid bodies and aortic bodies |
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Term
| chemorecetors are stimulated when...? |
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Definition
| low O2, high CO2, or high H+ |
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Term
| effect of BP when chemoreceptors are stimulated? |
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Definition
| will increase BP; due to constiction of vessels |
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Term
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Definition
| based upon filration and reabsorption |
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Term
| how do higher breain centers and emotions effect BP? |
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Definition
| will lower BP, and cause passing out bc of increase blood flow to other parts of the body, is a neogenic response |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| congestion, heavy accumulation of blood, bloody organs |
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Term
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Definition
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Term
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Definition
| not enough oxygen, such low BP person will pass out |
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Term
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Definition
| death of tissue due to lack of oxygen |
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Term
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Definition
| stroke, cerebral cascular accident |
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Term
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Definition
| translate insemic attack, "mini stroke" |
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Term
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Definition
"dropsy" decreased CO and SV, not proper blood return to the heart, lack of heat pumping
could be due to increased thickness of wall |
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Term
| primary of essential hypertension |
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Definition
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Term
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Definition
| result of known disease process |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| blushing or passing out at a rock concert bc you are so excited |
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Term
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Definition
| problems with the heart, not enough blood, haert will fail |
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Term
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Definition
| CO, blood flow, Resistance, BP |
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Term
| draw out pathway for renin |
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Definition
decreased BP stimulates renin... angiotensinogen to angiotensis, ACE changes angiotensin I to angiotensin II, II goes to adrenal cortex to stimulate aldosterone, aldosterone increases NA and H2O retention by kidneys and stimulate and increase in ADH
this then increases BP! |
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Term
| draw out capillary fluid shift |
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Definition
aterirole= net filtation out
venulue= net reabsorption in
(more in than out... creates lymph) |
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