A muscle's thick filaments are composed of the protein:

You are attending to a patient who is experiencing delirium, psychomotor agitation, and physiological excitation. The patient's family reports that they have never seen the patient act in this manner. You suspect:

a. Excitable delirium b. Interpersonal causes c. Environmental causes d. Intrapsychic causes

On maximal expiration, the diaphragm may be:

A) as high as the fourth intercostal space anteriorly. B) as high as the second intercostal space anteriorly. C) as low as the ninth intercostal space anteriorly. D) as low as the eleventh intercostal space anteriorly.