Answer the following
Answers
Explanation:
- Blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.
Functions of blood :-
- Transports gases, nutrients, waste, cells and hormones throughout the body.
- Transports O2, CO2, nutrients, hormones, heat and wastes.
- Regulates pH, temperature, water content of cells.
2. Aerobic :- Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy.
Anaerobic:- Anaerobic respiration also produces energy and uses glucose, but it produces less energy and does not require oxygen. This is useful in tissues which have a high energy demand such as in working muscles, in which there is not enough oxygen to produce all the energy needed by using aerobic respiration alone. Anaerobic respiration takes place in the cell cytoplasm and produces lactic acid.
3. (1) Heart.
(2)The heart's job is to collect blood from all areas of the body.
(3) Heart is in pear shape.
(4) The average gross weight of the heart was 289.6 g for men at an age of 31-40 years, 284.7 g for women at the same age. At an age of 61-70 years, the average weight was 345.9 g for men and 285.1 g for women.