While walking barefoot on the beach, Joe stepped on a thorn that penetrated through the sole of his foot to the dermis. How many layers of epidermis did the thorn penetrate?
A) 1
B) 2
C) 3
D) 4
E) 5
E
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Which of the following statements about the regulation of the glomerular filtration rate (GFR) is FALSE?
Elevation of blood pressure increases the GFR. Renin is released when the GFR is low. Constriction of the afferent arteriole increases the GFR. Constriction of the efferent arterioles increases the GFR.
The portion of the digestive tract that receives food directly from the oral cavity is the
A. nasopharynx. B. oropharynx. C. laryngopharynx. D. esophagus. E. larynx.
Which muscle would be most essential for blowing a trumpet?
A. Frontal belly of the occipitofrontalis B. Buccinator C. Platysma D. Zygomaticus major E. Masseter
Where in the body would you expect to find cells that have an abundance of smooth endoplasmic reticulum?
A. The surface of the skin B. The lining of the stomach C. The brain D. The ovaries E. The bone marrow