Answer:
Virus transmission is affected by a number of factors, including environmental determinants, host behavior, host defense mechanisms, and virus infectivity.
Explanation:
Answer:
HIV may affect erythropoiesis directly through infection of red cell precursors and bone marrow stromal cells.
Answer: b. cricoid cartilage.
Explanation:
The larynx cavity extends from the triangle shaped inlet that is called as the epiglottis which opens to the circular outlet that is called as circoid cartilage at the lower border. The circoid cartilage forms continuity with that of the lumen of the trachea. The mucous membrane which provides the lining to the larynx forms two pairs of the lateral folds that opens inward inside the cavity.
Answer: they need suport and care
Explanation:
