Shape of the aerial pulse is influenced by:: (A) Viscosity of blood, (B) Velocity of blood, (C) Aerial wall expansion, (D) Cross sectional area of aery.
Answer is C. C i.e. Aerial wall expansionThe blood forced into the aoa during systole not only moves the blood in the vessels forward but also sets up a pressure wave that travel along the aeries. The pressure wave expends the aerial wallQ as it travels, and expansion is palpable as the pulse.