The exocrine glands are ductless glands that secrete hormone directly into the bloodstream
a. True
b. False
Indicate whether the statement is true or false
False
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What causes the semilunar valves to close?
A. Higher pressure in the ventricles than aorta and pulmonary trunk B. Higher pressure in the ventricles than in the atria C. Higher pressure in the aorta and pulmonary trunk than in the ventricles D. Higher pressure in the atria than in the ventricles
The portion of the nasal cavity contained within the flexible tissues of the external nose is the
A) nasopharynx. B) vestibule. C) internal chamber. D) conchae. E) nasal septum.
Which of the following is NOT a cranial venous sinus?
A) superior sagittal sinus B) confluence of sinuses C) transverse sinus D) coronary sinus
In a normal electrocardiogram, the
A. P wave results from repolarization of the atria. B. QRS complex results from ventricular depolarization. C. P wave occurs after the QRS complex but before the T wave. D. T wave represents depolarization of the atria. E. repolarization of the atria is clearly visible.