In addition to its hinge function, when the knee is ________ it allows for some slight ________.
A. flexed; rotation
B. extended; supination
C. flexed; circumduction
D. extended; gliding
Answer: A
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Cyanosis is caused by an increased blood concentration of
A. deoxyhemoglobin. B. oxyhemoglobin. C. carbon monoxide. D. carbon dioxide.
When the flexor muscles of one arm contract in a withdrawal reflex, the extensor muscles of the other arm contract. This phenomenon is called
A. crossed flexor reflex. B. crossed extensor reflex. C. ipsilateral reflex. D. flexor extensor reflex.
Which of the following is not true of cardiac myocytes?
A. They are joined by intercalated discs. B. They have T tubules that admit extracellular calcium. C. Mitochondria make up about 2% of the cell volume. D. They are striated. E. They usually have one nucleus.
In the disease mononucleosis ("mono"), the spleen enlarges because of increased numbers of cells, phagocytic as well as others. Common symptoms of this disease include pale complexion, a tired feeling, and a lack of energy sometimes to the point of not being able to get out of bed. What might cause these symptoms?
What will be an ideal response?