In order for accommodation to occur
a. the shape of the cornea must be changed.
b. the shape of the lens must be changed.
c. the ciliary muscle is relaxed for near vision.
d. the ciliary muscle is contracted for distant vision.
e. none of these answers.
B
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Which of the following characteristics makes hemoglobin's structure such a good match for its function as an oxygen carrier?
A) Each hemoglobin molecule can bind two oxygen molecules. B) Each hemoglobin molecule can bind four oxygen molecules. C) Each hemoglobin binds irreversibly to an oxygen molecule. D) Each hemoglobin molecule can bind one oxygen molecule. E) Each hemoglobin molecule can't be saturated by oxygen molecules.
The projections on the superior surface of the tongue, some of which house taste buds, are the
A. tonsils. B. rugae. C. glossal spines. D. papillae. E. cilia.
What is the diploid number of chromosomes in human body cells?
A. 22 pairs B. 23 C. 46 D. 92
The ____________________ layer of the serous pericardium is the epicardium.
Fill in the blank(s) with the appropriate word(s).