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Tutor profile: Justine E.

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Justine E.
Graduate student with a passion for all things science
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Questions

Subject: Medicine

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Question:

Predict possible signs of tentorial herniation.

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Justine E.
Answer:

With tentorial herniation, the temporal lobe may be lacerated by the tough tentorium cerebelli and the oculomotor nerve may be stretched, compressed, or both. Oculomotor lesions may produce paralysis of the extrinsic eye muscles. Classic signs of tentorial herniation include high blood pressure, headache and coma

Subject: Biology

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Question:

List the stages of cellular respiration and describe where each is accomplished.

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Justine E.
Answer:

Glycolysis occurs in the cytosol: glucose is turned into pyruvate and 2 ATP are made The citric acid cycle occurs in the mitochondrial matrix: pyruvate is made into acetyl CoA and electrons are carried by NADH and FADH2. 2 APT are made Oxidative phosphorylation occurs at the mitochondrial inner membrane: 28 ATP are made through the electron transport chain

Subject: Anatomy

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Question:

Discuss the structure and function of the fibrous skeleton of the heart.

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Justine E.
Answer:

The fibrous skeleton of the heart is a framework of dense collagen that forms four fibrous rings surrounding the orifices of the valves. It consists of a right and left fibrous trigone formed by the connection between the rings and a membranous portion which makes up the interatrial and interventricular septa. The functions include: o Maintaining patency of the heart valves o Providing a fixed site for the attachment of the leaflets and cusps of the valves o Providing a fixed site for the attachment of the cardiac muscle fibers o Separating the atria from the ventricles so they can contract independently

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