Under normal circumstances, both divisions of the autonomic nervous system are active simultaneously
Indicate whether the statement is true or false
TRUE
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Select the correct statement about the function of myocardial cells
A) The refractory period in skeletal muscle is much longer than that in cardiac muscle. B) Cardiac muscle cells are innervated by sympathetic, parasympathetic, and somatic nerve fibers so that the nervous system can increase heart rate. C) The entire heart contracts as a unit or it does not contract at all. D) The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction.
A patient is breathing slowly and blood pH analysis indicates an abnormally high value. What is the likely diagnosis?
A) metabolic acidosis B) respiratory acidosis C) metabolic alkalosis D) respiratory alkalosis
The indentation on the posterior surface of the distal epiphysis of the humerus is the:
A) radial groove. B) coronoid fossa. C) trochlear notch. D) olecranon fossa.
A person who gets hit on the back of the head might suffer injury to which of these bones?
A. occipital B. temporal C. nasal D. zygomatic E. sphenoid