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19. fish gills
20. alveoli
The alveoli are the functional units of the lungs and they form the site of gaseous exchange.
21.In general, arteries and arterioles transport oxygenated blood from the lungs to the body and its organs, and veins and venules transport deoxygenated blood from the body to the lungs.
22.38 ATP molecules.
23.Pulmonary ventilation is commonly referred to as breathing. It is the process of air flowing into the lungs during inspiration (inhalation) and out of the lungs during expiration (exhalation).
24.There are approximately 600 – 800 million alveoli in the two lungs of a human being.
25.Xylem is the tissue concerned with upward conduction of water in plants.
26.:'Translocation' is the process by which the food synthesised in the leaves is transported to various 'parts of the plant'. The "phloem tissues" in the plant are responsible for "transporting food" produced in the "leaves" to the "different parts" of the plant.
27.diffusion is term for the inward movement of solvent molecule through a plasma membrane.
28.Capillary action by the xylem tissue
Xylem is a conducting tissue in plants, which helps in the translocation of water and minerals. These are absorbed from the soil by the roots of the plants, to transport to various parts of the plant such as stems, leaves and flowers.
29.Capillary action by the xylem tissue
Xylem is a conducting tissue in plants, which helps in the translocation of water and minerals. These are absorbed from the soil by the roots of the plants, to transport to various parts of the plant such as stems, leaves and flowers.
30. Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.
31.The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of your heart.
32.- Afferent arteriole is the blood vessel that brings the blood with nitrogenous waste into the Bowman's capsule of kidney.
33.In such situations, artificial kidneys are used for blood filtration and this process is called dialysis. Dialysis is the process which involves separation of nitrogenous wastes from the blood artificially.
34.Pulmonary artery
The heart.
35. valveor tricuspid valve
The right atrioventricular valveor tricuspid valve (valvula tricuspidalis) consists of three somewhat triangular cusps or segments located in the right atrioventricular orifice, the large oval aperture of communication between the right atrium and ventricle.
Explanation:
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contraction of what is or what has:What's the matter? What's been done? contraction of what does: What's she do for a living?