10 perguntas sobre o sistema respiratório
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Health, 26.07.2019 02:30, aliahauyon20
10 perguntas sobre o sistema respiratório
me ajudem por favor
Answers: 1
Health, 23.06.2019 06:30, nimclean
Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.
Answers: 2
Health, 23.06.2019 15:00, wazzuphottie1999
Send sperm live for about 48 hours after ejaculation and ovum for only 24 hours after ovulation intercourse can occur after ovulation for fertilization to occur
Answers: 1
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