Which of the following facial muscles stretches from the lower portion of the mandible to the fascia of the upper chest, and pulls the angle of the mouth downward during pouting or expression of horror?
A. Orbicularis oris
B. Orbicularis oculi
C. Buccinator
D. Platysma
E. Levator anguli oris
Answer: D
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Which statement about hypotonicity of the body fluids is incorrect?
a. Diabetes insipidus can cause it. b. It occurs when excess free H2O is present. c. Drowsiness, headache, confusion, lethargy, weakness, and edema are symptoms associated with it. d. Drinking excess fluid is a cause of it. e. The cells become swollen because of it.
Summarize the composition of blood plasma
What will be an ideal response?
Which of the following areas of the conduction system would produce spontaneous action potentials most frequently if the SA node were not functioning?
A. AV bundle B. Purkinje fibers C. AV node D. bundle branch E. the pacemaker
What is the nature of the signal that propagates along neurons that ultimately regulates and coordinates the functions of the body?
What will be an ideal response?