Describe what a nurse hears through the stethoscope while using a blood pressure cuff, and explain the significance of the sounds.
What will be an ideal response?
During a normal reading, the first thing the nurse hears is the absence of sound, because there is no blood flowing through the brachial artery; she has successfully compressed the artery with the inflated cuff. As soon as she has released enough pressure to allow blood to flow again, she hears the rumbling sounds of turbulent blood flow through a partially compressed artery. As she continues to release pressure, eventually the blood flows smoothly again as the artery is no longer compressed. The cuff pressure at the initial sound is the systolic blood pressure, and the cuff pressure when the sounds then disappear is the diastolic blood pressure.
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Connie recently celebrated her 45th birthday. She feels okay most of the day, but in the morning, for about a half hour after she gets out of bed, all of her joints feel stiff. This is due to
A. sprains. B. torn ligaments. C. nerve damage. D. changes in collagen structure.
Thin myofilaments are made up of the protein ________.
A. Z lines B. myosin C. myofibril D. actin
Decreased testosterone levels in males in their 50s signal a change called the male _________________
Fill in the blank with correct word.
Due to the contraction of smooth muscle in the walls of the dermal blood vessels,
A. body heat is conserved. B. more blood enters into the heart. C. more blood flows to the skin. D. body temperature tends to drop in that area. E. the blood vessels become dilated.