Zoology - Body Fluids and Circulation Question with Solution | TestHub

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 carries oxygenated blood from lungs to from heart to lungs, while pulmonary vein heart. $$\text{ Related Theory }$$ (Ref. to Fig. 14.3)