Answer:
The answer is E: A, B And C are correct.
Explanation:
The external nasal nose, in addition to its support function, presents others such as detecting odors, either from food or toxic substances; It has valves that initially clean the air entering the lungs, in addition to heating it, Also contributes to speech vibrations.
250 ml/min is the maximum oxygen intake level for the people having sedentary lifestyle.
<h3>What would be the maximum oxygen intake level?</h3>
A fit and healthy young adult should be using O2 about 250 ml/min if they have sedentary lifestyle because in sedentary lifestyle, there is less need for oxygen due to less activities.
So we can conclude that 250 ml/min is the maximum oxygen intake level for the people having sedentary lifestyle.
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Answer:
the answer to the question is c
Oogonia multiply until the fifth month .within six months after birth ,each will transform into a primary oocyte .
What is oogonia ?
During foetal stag of development the embryo develops the germinal epithelium of ovary .some of the cells of germinal epithelium enlarge and divide mitotically . the dividing cells projects into the stroma as a cord known as the egg tube of Pflugar;which later becomes a round mass ,called the egg nest .all these dividing cells are egg mother cells known as Oogonia.this is derived from the endodermal lining of the embryonic yolk sac which comes to lie in the ovary of the female ( while it is still an embryo ).
What is primary oocyte?
One cell of the egg nest grows but does not divide furter so as to form the primary oocyte.the primary oocyte is diploid and enters the growth phase.it is dormant stage ,nucleus intact ,female is born with these in her ovary.every month primary oocytes resume oogenesis and start developing growth and development in the onset of puberty.
Hence the correct answer is Primary oocyte.
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