The figure shows blood circulation in humans with
labels A to D. Select the option which gives correct
identification of label and functions of the part.
(a) B - Capillary-Thin without muscle layer and
wall two cell layers thick
(b) C - Vein-Thin walled and blood flows in jerks/
spurts
(c) D - Pulmonary vein-Takes oxygenated blood to
heart, pO2 = 95 mmHg
(d) A - Artery-Thick walled and blood flows evenly
labels A to D. Select the option which gives correct
identification of label and functions of the part.
(a) B - Capillary-Thin without muscle layer and
wall two cell layers thick
(b) C - Vein-Thin walled and blood flows in jerks/
spurts
(c) D - Pulmonary vein-Takes oxygenated blood to
heart, pO2 = 95 mmHg
(d) A - Artery-Thick walled and blood flows evenly