Despite the lack of pressure, blood moves towards the heart in veins due to the
(a) wider bore.
(b) suction created due to pumping by heart.
(c) narrow bores of efferent capillaries.
(d) presence of valves preventing back flow.
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Despite the lack of pressure, blood moves towards the heart in veins due to the
(a) wider bore.
(b) suction created due to pumping by heart.
(c) narrow bores of efferent capillaries.
(d) presence of valves preventing back flow.
Despite the lack of pressure, blood moves towards the heart in veins due to the
(a) wider bore.
(b) suction created due to pumping by heart.
(c) narrow bores of efferent capillaries.
(d) presence of valves preventing back flow.
(b) suction created due to pumping by heart