josephs story

Topics: Cell, Cell membrane, Golgi apparatus Pages: 2 (462 words) Published: April 21, 2014

Josephs story:

B.Assuming Josephs heart stopped, what cellular processes and membrane functions are going to be affected by loss of oxygen, blood glucose, and waste removal? Joseph’s blood pressure got so high due to the vessels being blocked with plaque, therefore circulation of blood has been blocked and it can no longer receive the nutrients required for it to pump. The body can’t breakdown glucose to make energy, and the increase in CO2 lowers the pH. Active transport on the plasma membrane stops which also stops ATP, and sodium and potassium start to leak out destroying the chemical gradient.

C.What intracellular organelles have membranes as part of their structures? How would the breakdown of the membranes of these structures affect the function of josephs heart cells? Endoplasmic reticulum, the Golgi complex, the mitochondria and the lysosomes all have membranes in their structure. Whenever calcium levels rose to high the heart went in to a prolonged contraction, the lysosomes usually in the vesicles start to destroy its own membranes.

D.Two important pieces of information-instructions josephs body needs to repair itself and his predisposition for vascular disease- are both contained within the cell on which structures?

The instructions and information are in the mitochondrial DNA, the body needs this information along with a blood supply to create new cells. Mitochondria contains its own DNA and genes so it can replicate.

E.Joseph’s heart attack has caused the function of his cells to change. What types of proteins in the cell membrane were involved in the homeostatic imbalances of his heart cells? Without ATP the sodium potassium ion channels can’t operate. The heart can’t contract properly. Increased Calcium sent the heart in to a prolonged contraction, it convulsed recklessly.

F.Why was reestablishing oxygen flow to Joseph’s body so important? What processes would be affected by lack of oxygen? Without oxygen...
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