What is the Apgar scale? What does it measure? How are scores determined? What do the scores mean?
What will be an ideal response
The Apgar scale is used at 1 and 5 minutes after birth to measure the newborn's
body functioning. It measures skin color, heartbeat, reflex irritability, muscle tone,
and respiratory effort. Each of these is measured with a score of 0, 1, or 2. Higher
scores are better. A 5-minute score of 7 or greater means that there is no danger. If
the total score is below 4, the baby is in critical condition.
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Compared to axons without myelin sheaths, what is the speed of action potentials through myelinated axons?
a) faster because ion exchange occurs along the entire axon b) slower because ion exchange occurs along the entire axon c) faster because ion exchange occurs only at the nodes of Ranvier d) slower because ion exchange occurs only at the nodes of Ranvier
Which research method was used to study the effects of the brain damage experienced by Phineas Gage?
a) case study b) biofeedback c) stereotaxic surgery d) computerized brain imagery