A baseball player was hit on the left side of his skull in the parotid area. He cannot close his eye and the corner of his mouth droops. Which cranial nerve was damaged?
A. facial
B. glossopharyngeal
C. accessory
D. optic
E. oculomotor
A
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All lymphocytes are leukocytes, but not all leukocytes are lymphocytes
Indicate whether the statement is true or false
When people experience conditions of high environmental temperatures and humidity,
A) they can become hydrated from absorbing water vapor from the air. B) their bodies are cooled primarily by the merocrine sweat glands. C) even if they do not overexert they will have sore muscles and feel tired. D) they feel increasingly energetic as their skin surface becomes warmer. E) None of the answers are correct.
Erythrocytes
a. are large cells. b. participate in the clotting of blood. c. defend the body against foreign substances. d. possess binding sites for oxygen and CO2 e. possess all of the organelles found in other cell types.
What is the early stage of embryonic development during which rapid mitotic cell divisions occur as the zygote travels down the uterine (fallopian) tube?
A) the acrosomal reaction B) cleavage C) fertilization D) implantation