Human Anatomy and Physiology : Help with Evaluation Methods for Muscles, Ligaments, Tendons

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #1501 : Human Anatomy And Physiology

A patient in your clinic complains of knee pain, and demonstrates a positive lever sign. The positive lever sign suggests what structure is injured?

Possible Answers:

Medial meniscus

Posterior cruciate ligament

Lateral meniscus

Anterior cruciate ligament

Correct answer:

Anterior cruciate ligament

Explanation:

Although it is a very new test, the available literature suggests that the lever sign has superior diagnostic value to the Lachman, pivot-shit, and anterior drawer tests, to detect anterior cruciate ligament (ACL) injuries. Additionally, the preliminary evidence suggests that the lever sign has high diagnostic value for both acute and chronic ACL injuries. 

Example Question #11 : Help With Evaluation Methods For Muscles, Ligaments, Tendons

Since ATP regeneration occurs through oxidative phosphorylation, we are able to calculate ATP usage during exercise by tracking the volume of oxygen flow in a test subject, and calculating the amount of oxygen used. This method of indirectly measuring ATP usage during exercise requires use to know the ratio of high energy phosphates (ATP) generated per unit of oxygen (O2).

What is the typical production ratio of high energy phosphates (ATP) per unit of oxygen (O2)?

Possible Answers:

3 ATP per O2

None of the answers are correct.

1.5 ATP per O2

32 ATP per O2

6.3 ATP per O2

Correct answer:

6.3 ATP per O2

Explanation:

Oxidative phosphorylation generates roughly 6.3 high energy phosphates (ATP) per unit of oxygen (O2).

It is also important to note that ATP generation occurs anaerobically via lactic acid production, with the ratio being 1.5 high energy phosphates (ATP) per unit of lactate. But this is not the correct answer in this context.

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