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Answer:
pulmonary artery carry deoxygenated blood from right ventricle towards lungs
pulmonary vein carries oxygenated blood from lung to the left side of the heart
Answer:
1)A sphygmomanometer is a medical gadget used for measuring blood pressure.
It's uses
Measuring blood pressure
Monitoring effectiveness of medications
Helps to control hypertension
It helps to detect various diseases.
2)Pulmonary artery Pulmonary vein
The pulmonary artery carries Carbon-dioxide rich blood to the lungs.
The pulmonary vein carries oxygen-rich blood to the lungs.
The pulmonary artery arises from the right ventricle of the heart
The pulmonary vein drains blood in the left atrium of the heart.
The pulmonary aorta divides into one pair of pulmonary arteries.
The pulmonary vein divides into two pairs of pulmonary veins.
It carries deoxygenated blood, unlike the rest of the arteries.
It carries oxygenated blood, unlike the rest of the veins.
Wall is thick and elastic.
Wall is thin.
Semilunar valves are present.
Valves are absent.
Blood pressure is higher.
Blood pressure is lower.
3)Steps in Respiration
(1) Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO, rich alveolar air is released out.
(1) Diffusion of gases (O, and CO₂) across alveolar membrane. Transport of gases by the blood.
(iv) Diffusion of O, and CO₂ between blood and tissues.
(v) Utilisation of O, by the cells for catabolic reactions and resultant release of CO, (cellular respiration as dealt in the Chapter 14 - Respiration).