compliance vascular

Question 1

where is the majority of blood stored

Answer 1

in the systematic veins 66% (ish)

Question 2

how and why does compliance change between veins + arterys

Answer 2

dependant of the thickness of the wall
arterys = thick walls = high compliance = ridged
veins = thin walls = low compliace = flexable

Question 2

how does blood volume change with changing pressure in arterys vs veins

Answer 2

arterys: as pressure inrease volume small increase
veins: as pressure increases volume greatly increases

Question 3

what is the equ for ciompliance

Answer 3

compliance = ΔV/ ΔP

Question 4

what is the survival value of veins

Answer 4

venoconstriction- sympathetic constriction of veins due to damage to arterys -> increased blood into arterial system to maintain MAP

Question 5

what is venous pooling

Answer 5

blood pooling below te heart due to gravity

Question 6

what is starlinks law

Answer 6

the more streached a muscle fiber before contraction = stronger contraction
- venous return increase -> increased streach -> increased stroke volume

Question 6

what are the two methods to prevent venos pooling

Answer 6

venous valves - creates a discontinuous column of blood only enables upwards bloodflow

tone of surrounding tissue - tone of tissue can hold veins in place and compression of SM puhes blood which is unidirectional due to veins

effects heightened during excersise