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The figure shows blood circulation in humans with labels a to b. Select the option which gives correct identification of label and functions of the part.
Options:
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Verified Answer
The correct answer is:
d - Pulmonary vein-Takes oxygenated blood to heart $\mathrm{pO}_2=95$ $\mathrm{mm} \mathrm{Hg}$
a- Artery- Carry blood from heart to body parts. It is thick walled and elastic, under high blood pressure.
b- Capillary- thin walled, with only one layer, facilitates the diffusion of nutrients, gases, etc., into tissues
c- Vein - thin walled, brings blood from body parts to heart, act as low resistance conduct for blood flow.
d- Pulmonary vein-take oxygenated blood to heart, $p \mathrm{O}_2=95 \mathrm{~mm} \mathrm{Hg}$.
(Ref. to Fig. 14.2)
Caution
Pulmonary artery takes deoxygenated blood $\quad$ carries oxygenated blood from lungs to from heart to lungs, while pulmonary vein heart.
$$
\text { Related Theory }
$$
(Ref. to Fig. 14.3)
b- Capillary- thin walled, with only one layer, facilitates the diffusion of nutrients, gases, etc., into tissues
c- Vein - thin walled, brings blood from body parts to heart, act as low resistance conduct for blood flow.
d- Pulmonary vein-take oxygenated blood to heart, $p \mathrm{O}_2=95 \mathrm{~mm} \mathrm{Hg}$.
(Ref. to Fig. 14.2)
Caution
Pulmonary artery takes deoxygenated blood $\quad$ carries oxygenated blood from lungs to from heart to lungs, while pulmonary vein heart.
$$
\text { Related Theory }
$$
(Ref. to Fig. 14.3)
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