1. beginning with all chambers of the heart in the "relaxed" phase, describe the cardiac cycle in mammals, with systole and diastole of the atria and ventricles. for each time point in the cycle you select, state the following: • whether the atria and ventricles are contracting or relaxing • whether the av valves and semilunar valves are closed or open • whether the pressure in the atria and ventricles is high or low


It would be like the 70's song "it's raining men".
Gucci gang gucci gang gucci gang gucci gang
D.) domain, kingdom, phylum, class, order, family, genus, species

Do you know the answer?

Other questions on the subject: Biology

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of p...Read More
2 more answers
Biology, 22.06.2019, archiecom55
this is an example of the geosphere interacting with the atmosphere. the geosphere includes the crust of the earth (all the rocks and such). the atmosphere is the air. in this exam...Read More
3 more answers
Biology, 22.06.2019, mattydoug4818
this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-da...Read More
1 more answers
Biology, 22.06.2019, eden43
fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running aro...Read More
1 more answers