Nitric oxide (NO) acts as a neuromodulator by altering synaptic function.
Answer the following statement true (T) or false (F)
True
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Which structures pull on the tendinous cords (chordae tendinae) and hold them taut during ventricular contraction?
A. Papillary muscles B. Pectinate muscles C. Trabeculae carneae D. Coronary ropes E. Fibers in the atrioventricular bundle
Mr. Reynolds had an increase in his blood urea nitrogen (BUN). BUN is a measure of the amount of nitrogen in the blood that comes from urea, which is normally eliminated by the kidneys. Determine the specific type of metabolism that causes urea to be
present in the blood. What will be an ideal response?
When comparing slow fibers to fast fibers, slow fibers
A) take less time to reach peak tension. B) have much larger fiber diameters. C) generate much more tension. D) are lacking myoglobin. E) appear dark red.
Which statement is true?
A) The brachial plexus is located in the neck. B) The phrenic nerve arises from the cervical plexus. C) The sciatic nerve arises from the lumbar plexus. D) There are seven pairs of cervical nerves.