During normal viewing of a distant object, the:
A. firing of parasympathetic nerves to ciliary muscles increases.
B. zonular fibers are slackened.
C. lens flattens.
D. light rays striking the eyes are diverged by the cornea.
E. ciliary muscles are contracted.
C
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Match the structure with the description.
a. 1 b. 2 c. 3 d. 4 e. 5 f. 6 g. 7 h. 8 i. 9 j. 10 k. 11 1. _____ Pulmonary artery 2. _____ Tricuspid valve 3. _____ Pulmonary vein 4. _____ Mitral valve 5. _____ Right ventricle 6. _____ Left ventricle 7. _____ Lungs 8. _____ Aortic semilunar valve 9. _____ Right atrium 10. _____ Pulmonary semilunar valve 11. _____ Left atrium
Mitotic divisions in germ cells _______.
A) end at andropause or menopause. B) begin at puberty. C) continue throughout life. D) are complete before birth. E) The answer depends on gender.
Consider the classifications of bone, and examples of each. Which classification comprises bones used primarily for movement rather than protection?
A. Short bones B. Regular bones C. Long bones D. Flat bones E. Irregular bones
If two QRS complexes occur before a P wave it means the ________
A) SA node is not functioning at all B) the heart is in ventricular fibrillation C) the ventricles have contracted prematurely D) the AV node is not functioning E) atria are contracting too quickly