The sternocleidomastoid inserts on the
A) occipital bone.
B) clavicle.
C) mastoid process of the temporal bone.
D) sternum.
E) mandible.
C
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Stimulation of parasympathetic nerves releases epinephrine into the blood plasma.
Answer the following statement true (T) or false (F)
Which of the following is not true of the SA node?
A) It is located at the junction of the superior vena cava and right atrium near the superior end of the sulcus terminalis. B) It is the pacemaker of the heart. C) It sends impulses directly to the interventricular bundle of subendocardial branches (fibers). D) It receives sympathetic impulses from the first five to six thoracic segments that accelerate its basal rate. E) It receives parasympathetic impulses from the vagus nerve that decrease its basal rate.
Muscles that have a fine degree of control have small motor units
Indicate whether the statement is true or false
Which of the following does not contain ciliated cells?
A. Primary bronchus B. Terminal bronchiole C. Trachea D. Nasal cavity E. Larygopharynx