Answer:
Why are embryos used in medical research?
Stem cells can be obtained at the early stages of embryo development; these cells are called human embryonic stem cells (hESC). They also could be used in research to develop drugs to treat serious diseases, or to repair organs following a stroke or heart attack.
Ph means health because i was in health class and she said ph means heath
Lymph is the excess blood plasma after it is filtered from interstitial fluid, when the interstitial fluid is formed. From the circulation system, after filtration, lymph is comes into to the Lymphatic system.
The Lymphatic system with its tubular vessels, is an open system. It conducts lymph between various parts of the body. It provides a route for the excess interstitial fluid to be returned back to blood.
On the other hand, Our cardiovascular system - responsible for circulation of blood - is a
closed system. Blood never leaves the veins, arteries, and capillaries.
