Physiology

Ohms 

Ohms Law V = IR

Voltage equals current times resistance

P = Q * R

V = IR

Pressure = Voltage

Flow of fluid = flow of current

Resistance = Resistance

For fluids this means the change in the pressure is equal to the flow times the resistance

This means that the voltage is equal to the change in pressure

And that the flow of Currence is equal to flow of fluid so current equals flow

Velocity times area equals flow flow it is how much speak there is but also with amount of area

Vessels that have a stiff have more resistance less compliant stretchy less resistant

Pulse pressure is the systolic blood pressure minus the diastolic blood pressure and in older patients you have higher pulse pressure the diastolic pressure is more related to the systemic vascular resistance the systolic pressure is more related to the left and diastolic following

Compliant close change in volume over change in pressure

Stiff vessels less compliant higher pulse pressure

Distensible vessel blood pressure 120/80 stiff vessel 170/100 pressure is cardiac output times the total peripheral resistance resistance increased means you need more pressure to maintain flow

Total peripheral resistance easy to push blood out of the heart less oxygen is required if you have more resistance more work of the heart

What ReZyst flow out of the heart it is the thickness of the blood but also the types of vessels

2 types of vessels your aorta has systolic blood pressure of 100

Large arteries still roughly 100 mmHg

Small arteries 10 to 20 mmHg

Arterials 35 mmHg capillaries 25 mmHg

The large arteries provide very low resistance to the flow so the change of blood pressure is equal to the flow times the resistance so you have very little resistance the biggest pressure change

Arterials 35 mmHg

Aorta systolic blood pressure 100 mmHg greatest fall is 35 mmHg at the arterial

Arterial's are the resistance vessels there the major determinant of total peripheral resistance large pressure drop

Vasoconstriction increases total peripheral resistance

The autonomic nervous system cannot strength unless called vasoconstriction or vasodilation decreases total peripheral resistance

Viscosities with thickness of the blood low viscosity anemia high viscosity multiple myeloma spherocytosis polycythemia

Pressure is equal to the flow time of the resistance

Resistant disproportional to the change in the pressure over the flow

The resistance is equal to the 8 times the viscosity times the length divided by 5 times the radius to the fourth power human organs arranged in parallel resistances that up differently in the series done in parallel so and parallel you do 1 over are equal is 1 over are +1 over are

And series are equal as are plus are the human body has arranged to and parallel are total to minimize resistance

Our total pain series is 2+2 was 4

At the same organs with the same resistances if arranged in parallel resistance of 1 information series has a resistance of 4

Arrangement of structures are more efficient there is less resistance to flow and this is why the human body does not

The flow equation stilted PS equal to the floor at times to resistance