Consider a blood vessel of constant diameter and fixed length. Which equation expresses the relation between pressure gradient (ΔP), blood flow (F), and resistance (R)? Remember that the Greek letter Δ (delta) means the difference in pressure between one end of the vessel and the other end

A) F = R / ΔP

B) ΔP = F / R

C) R = ΔP * F

D) F = R4

E) ΔP = F * R

E) ΔP = F * R

Explanation:

Let's look at Ohm's law:

ΔV = I * R

where I is the electric current, ΔV is the potential difference and R is the resistance.

We can derive the relationship between pressure gradient (ΔP), blood flow (F), and resistance (R) by analogy, getting:

ΔP = F * R

or

F = ΔP/R

This means that the flow is proportional to the pressure difference and inversely proportional to the resistance.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.