Gills greatly increase the surface area for gas exchange. ... Water flows over gills in one direction while blood flows in the opposite direction through gill capillaries. This countercurrent flow maximizes oxygen transfer.
Answer:
A branch, as of a nerve or blood vessel, or a projecting part, as of a rotifer or crustacean. A bony process extending like a branch from a larger bone, especially the ascending part of the lower jaw that makes a joint at the temple
Explanation:Hope that helps
No, most of the time when giving cpr correctly damage will be done.
Answer:
Mental stress provide most change in the cardiovascular readings .
Explanation:
Mental stress -
Mental stress influences most of the change in cardiovascular system. During mental stress, the body releases cortisol and adrenaline. These are the fight hormones secreted from adrenal gland. They will increase the heart rate and blood pressure to fulfill the extra need in response to stress. Prolonged secretion of such hormone may lead to cardiovascular dysfunctions.
However, physical stress is also harmful for CVS and does make changes. but physical stress tends to get over once the activity is ceased.
Mental stress has prolonged cardiovascular risks .