Oxygen poor blood enters the right atrium through the vena cava and travels to the right ventricle which is then pumped through the pulmonary arteries to the lungs where gas exchange takes place and oxygen rich blood returns to the heart through the pulmonary veins into the left atrium and then the left ventricle which pumps oxygen rich blood to the rest of the body cells through the aorta.
Answer:
Cell counter inverted microscope and liquid nitrogen storage incubator are the technologies used in the cell culture.
Explanation:
Cell culture needs control environment for the production of cells in order to avoid contamination from other microbes. For this reason, liquid nitrogen storage incubator is used which decreases the temperature in order to slow down the process of cell division and other cellular processes and also provide safety from contamination. Cell counter inverted microscope is used to see the growth of the cells at the bottom of storage tank.
B hope this helps a lot :)
APOPTOSIS: (CELL SUICIDE) normal cell death
Normal cells do not live for ever. Under certain circumstances cells are programmed to die.
This happens particularly during development, cells that become damaged beyond repair will normally undergo some sort of PROGRAMMED cell death. This is called APOPTOSIS.
CELL ARREST :
Is a induced process. It takes place in G1 phase of cell cycle.
This is carried out experimentally by introducing some INHIBITORS ( see links included).
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In case of many medical disease treatments, for example leukaemia, cancers of various organs such inhibitors are used to arrest the cell cycle at G1 and before G2 phase.</span>
