Collateral blood flow is an enlargement vessel that opens to cause a detour around a blockage. When an artery in the brain is block (TIA) open collateral vessels can allow blood to bypass the blockage to restore blood flow to the affected area. <span />
Strengthening some synapses and weakening others establishes neural circuits that contain memories; the low-frequency stimulation of synaptic inputs to a cell can <u>decrease</u> their strength in a phenomenon known as <u>long-term</u><u> depression</u>.
The effect of long-term depression can arise from neural effect of synapses. The synaptic impulses start to decrease gradually when a person is suffering from long-term depression. This decreased neural synapses arise from long-term exposure to stress that is chronic. It can also stem from anxiety. The continuous exposure of the neurons to stress and anxiety can also lead to degeneration and depletion of the cells present in the nervous system. Also the cortisol levels rise during depression and it is regulated by the hippocampus. This leads to a delay or restriction in the developing neurons inside the brain. Long-term depression can lead to increased chances of getting addicted to alcohol or drugs.
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Answer:
The correct answer is stem cell
Explanation:
Stem cells are the cells that can convert into any specific type of cell by dividing it repeatedly. So stem cells are unspecialized and can give rise to specialized cells.
As they can divide repeatedly and give rise to a specialized type of cell they allow the body to heal, repair and grow. There are different types of stem cell like induced pluripotent cell, adult stem cell, an embryonic stem cell.
Stem cell transplant is used to in the patient who cannot produce normal blood cell, for example, bone marrow transplant.
Answer:
The answer is 13.7076271
Round that however you need.
Nutrients are recycled, but energy is not.