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Tutor profile: Daniel P.

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Daniel P.
Columbia University Medical Student with 8+ years tutoring experience
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Questions

Subject: Health and Medicine

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Question:

Describe the physiology of elevated FSH in patients with Turner syndrome.

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Daniel P.
Answer:

Turner syndrome is a genetic alteration leading to individuals with XO karyotype. This leads to poorly developed ovaries and follicles. Follicles normally secrete estrogen in response to FSH production. In the absence of follicles no estrogen is secreted and therefore FSH rises to try to compensate for the poorly developed "streak" ovaries. This is termed hypergonadotropic hypogonadism in which estrogen is low, but FSH is high.

Subject: Biology

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Question:

What are the key differences between mitosis and meiosis?

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Daniel P.
Answer:

1. Mitosis results in the production of two cells while meiosis results in the production of four cells. 2. Mitosis results in identical cells to each other and to the mother cell, while meiosis involves genetic variation due to crossing over and independent assortment. 3. Mitosis results in daughter cells with the same number of chromosomes as the mother cell while meiosis gives daughter cells with half the number. 4. Mitosis includes one division (cytokinesis) , while meiosis includes two.

Subject: Anatomy

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Question:

Describe cardiovascular anatomy.

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Daniel P.
Answer:

The heart and circulatory system consisting of arteries, capillaries, and veins make up your cardiovascular system. Your heart is a four-chambered organ that functions as a pump to propel deoxygenated blood to the lungs and oxygenated blood to the rest of the organs, cells, and tissues of the body which require oxygen for aerobic respiration. Blood delivers oxygen and nutrients to every cell and removes the carbon dioxide and waste products made by those cells. Blood is carried away from the heart in the arterial system and to the heart in the venous system.

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