Answer:
The answer is E: A, B And C are correct.
Explanation:
The external respiration is that which occurs at the level of the pulmonary alveoli with the capillaries of the pulmonary vessels, producing an exchange of gases, releasing carbon dioxide from the blood to the alveolus, and in turn, this delivers oxygen.
The internal respiration is the one between the tissue capillaries and the cells where the blood releases the oxygen and receives the CO2, turning the oxygenated blood into deoxygenated.
The pulmonary ventilation on the other hand takes oxygen from the air we breathe and takes it to the lungs.
Answer: b. The elderly have a higher risk from toxic pesticides because they are less able to eliminate environmental toxins.
Explanation:
The older adults are expected to have health problems after a pesticide exposure. This is because of the fact that their metabolism is slow and the liver and kidneys are not able to remove the pesticides from the body. The liver and kidney may get injured during the exposure of the high doses of pesticides.
The longer a pesticide stay in the body of an old person this may result in more severe injury. As the body is slow in metabolism that is the conversion of the chemicals in the pesticides into less toxic metabolites. Thus the elderly people will not be able to eliminate the toxin from the body. The toxin will damage the vital organs and can lead to death.
Explanation:
The increase in urine volume helps to excrete out the filtrates such as the salts from the body . Increased urine volume also helps in flushing out the toxic chemicals from the body . Even the increase in the blood pressure of the body causes the increase in the urine volume .
And increased urine volume will lead to the reduction of the fluids , which will stabilize the blood volume .
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