Which of the following is the action of the frontalis muscle?
A) Frontalis elevates, or opens, the upper eyelid. B) Frontalis elevates the eyebrow.
C) Frontalis closes the eye. D) Frontalis lifts the scapula.
Answer: B
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What does the formula C6H12O6 mean?
A) There are 6 calcium, 12 hydrogen, and 6 oxygen atoms. B) There are 12 hydrogen, 6 carbon, and 6 oxygen atoms. C) The molecular weight is 24. D) The substance is a colloid.
Which of the disorders below is characterized by destruction of the walls of the alveoli producing abnormally large air spaces that remain filled with air during exhalation?
A) coryza B) tuberculosis C) pneumonia D) emphysema
If the cusps of an atrioventricular valve are damaged or too short to meet at the center of the valve or do not close completely during the normal point in the pumping cycle, blood may flow backwards. This is called ________.
Fill in the blank(s) with the appropriate word(s).
In appearance, microvilli are described as Cytoplasmic extensions Single, whip-like structures Tiny, non-motile, finger- like projections
What will be an ideal response?