Nerve impulses travel rapidly on myelinated nerves because:
A) Myelin allows for a consistent incremental impulse over the membrane surface
B) Impulses travel through the membrane, generating new impulses at each node
C) Impulses bypass nodes and travel up to 8–10 mm to subsequent nodes, decreasing the length of nerve over which impulses must be generated
D) Transmit rapidly because they are small nerves
C
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Proper instructions for positive expiratory pressure include which of the following?
1. Take in a breath that is larger than normal, but do not fill lungs completely. 2. Exhale forcefully and maintain an expiratory pressure of 10 to 20 cm H2O. 3. After 10 to 20 breaths, take two or three "huff"' coughs, and rest as needed. 4. Repeat the cycle 8 to 10 times, not to exceed 30 min. a. 1 and 3 only b. 1, 2, and 3 only c. 3 and 4 only d. 2, 3, and 4 only
As the concentration of analyte begins to exceed the amount of antibody present, the dose response curve will flatten (plateau) and with further increase may become negatively sloped; this describes which of the following?
A. Logarithmic relationship of antibody concentration and millivolt output from the detector B. Increase in precision C. Loss of sensitivity D. Hook effect
Cultural beliefs that can impact a patient's health include all of these, EXCEPT ________.
A. patients feel they have little control over their health B. patients feel they have lots of control over balance in health C. patients are unaware of local resources and services that provide help D. family members can be an important part of the treatment team
Which of the following words is an example of proper medical terminology?
A) Belly B) Thorax C) Jawbone D) Chest