<Dl> <Dd> ρ (∂ u ∂ t + u ∂ u ∂ x) + ∂ p ∂ x = 0 (\ displaystyle (\ rho) \ left (((\ partial) u \ over (\ partial) t) + (u (\ partial) u \ over (\ partial) x) \ right) + ((\ partial) p \ over (\ partial) x) = 0) </Dd> </Dl> <Dd> ρ (∂ u ∂ t + u ∂ u ∂ x) + ∂ p ∂ x = 0 (\ displaystyle (\ rho) \ left (((\ partial) u \ over (\ partial) t) + (u (\ partial) u \ over (\ partial) x) \ right) + ((\ partial) p \ over (\ partial) x) = 0) </Dd> <Dl> <Dd> ∂ A ∂ t + ∂ ∂ x (A u) = 0 (\ displaystyle ((\ partial) A \ over (\ partial) t) + ((\ partial) \ over (\ partial) x) (Au) = 0) </Dd> </Dl> <Dd> ∂ A ∂ t + ∂ ∂ x (A u) = 0 (\ displaystyle ((\ partial) A \ over (\ partial) t) + ((\ partial) \ over (\ partial) x) (Au) = 0) </Dd>

Heart valves is subject to the highest amount of pressure from blood flow