Current evidence supports the notion that arthrogenic muscle inhibition can be treated by targeting the sensory response of the injured joint. For example, applying ice (focal joint cooling) and/or sensory TENS to the knee joint before and/or during rehabilitation can improve motor unit recruitment.
a. true
b. false
Answer: a. true
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CO2 is transported in the blood ____
a. dissolved in the plasma exclusively b. as bicarbonate ions exclusively c. bound to hemoglobin exclusively d. dissolved in the red blood cells exclusively e. dissolved in the plasma, as bicarbonate ions, and bound to hemoglobin
Below is a metabolic pathway having 3 chemical reactions and 3 enzymes. Enzyme 1 has 2 binding sites--1 for the substrate A and another for the end product D. As the pathway proceeds, the end product in higher quantities will react with enzyme 1, blocking the enzyme's binding to the substrate. Which statement is true about this pathway? enz1 enz2 enz3 Substrate A --> B --> C --> D end product
A. Enzyme 1 has an active site and a regulatory site. B. This is a case of noncompetitive inhibition. C. As a result of the inhibition of the enzyme, there will eventually be less substrate converted to the end product D. D. All of the choices are correct.
Which of the following does NOT happen in cells in which both copies of the PTEN gene are inactivated?
a) The activity of the PKB molecules in the cell drops. b) The cells have excessively high levels of PIP3. c) The cells are more likely to survive a stimulus that normally leads to their destruction. d) The PKB molecules in the cell are more active than usual.
Which of the following is an air-filled internal organ found in the mantle cavity of land snails and slugs?
A. Lung B. Trachea C. Gills D. Spiracle E. Pore