Human Anatomy and Physiology : Musculoskeletal System
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Example Questions
Example Question #41 : Musculoskeletal System
A patient in your clinic complains of knee pain, and demonstrates a positive lever sign. The positive lever sign suggests what structure is injured?
Lateral meniscus
Medial meniscus
Posterior cruciate ligament
Anterior cruciate ligament
Anterior cruciate ligament
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 #42 : Musculoskeletal System
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)?
1.5 ATP per O2
32 ATP per O2
6.3 ATP per O2
None of the answers are correct.
3 ATP per O2
6.3 ATP per O2
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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