What influence does a hyperactive nervous system as seen in such conditions as Raynaud's disease, have on superficial circulation?
What will be an ideal response?
An activated sympathetic nervous system stimulates vasoconstriction in the superficial arterioles. This vasoconstriction will decrease blood flow to the skin and may lead to skin discoloration (cyanosis), cooling, and ischemic pain.
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Which sleep stage(s) is (are) characterized normally by irregular breathing patterns with short, central periods of apnea and inhibited rib cage muscles and upper airway muscles?
a. Stage 1 sleep c. Stages 3 and 4 sleep b. Stage 2 sleep d. Rem sleep
The top ________ of a sterile table is the only part considered sterile
A. and 1 inch down the side B. only
________ is a risk factor associated with cerebral palsy
A) Premature birth B) Low birth weight C) Multiple birth D) All of the above
Which of the following substances were the mainstay of anesthetics for several centuries?
A) nitrous oxide and acetaminophen B) opiates and alcohol C) halothane and alcohol D) opiates and aspirin