Physio shit

Discuss Fully how a protein molecule can enter the cell, and what will happen when it is inside the cell?

The protein will go to the process called "phinocytosis" with this process the protein micromolecules will attach to the a specizledprotein receptor "coated pits" that is located in the outer part of our cell membrane. after the attachment of the protein micromolecules into this receptor. there is filbrillar protein "clathrin" and with the help of the a contractile filaments(actin and mysoin) which is located in the cell they will invaginate inward and the cell mebrane and it will close and pinch off into ICF and it will formed a pinocytotic vesicle. After that lysome will combine into this pinocytotic vesicle (it will called the digestible vesicel) and It will digeste all of the digestible material because lysome is containing an enzyme called Hydrolases ezymes which is capble of hydrolyzing this protein. However, some of idigestible substances are going to the outside of cell which is known as endocytosis.

Discuss fully how bacteria can enter the cell and what will happen when it is inside the cell?

With almost similar steps in the Question no.1, however it only all engulf a large partciles(bacterium, dead cell) The bacteria is coated of antibody and these anti body will bind into the receptor of the phagocyte and the cell membrane of will invaginate inward because of the clatherin which are present in the cell membrane and together with the contractile filament the engulfment of this particle it will formed a phagocytic vescile in the cytoplasm. The lysome will take in action to hydrolases this baccteria and after that some remaints of this bacteria will be move out in the cell in the process of exocytosis.

Discuss in detail how an increase in arterial pressure can be corrected using a negative feedback mechanism until the situation return in its normal state?

- It can be corrected by the bacoreceptor when the arterial wall are streched because of the increase of blood flow. Because when arterial wall is streched the barorecptor will send/give a barrage of signal to medulla via CNS(vagus & glossopharyngeal nerve) and it will inhibit the vasomotor center to lessen the signal/impulse of symphatetic nervous to the heart and blood vessels. It will lower the pumping activity in the heart and dilation of peripheral vessels and eventually in it will decreased arterial pressure until it reached the normal state.

Discuss fully how an Oxygen buffering function of hemoglobin works to regulate the oxygen level in tissues?

- Our blood ha