This is the simplest of the lymphoid organs.
A. Spleen
B. Thymus
C. Appendix
D. Tonsil
Answer: D. Tonsil
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Choose the structures that light passes through to get to the retina.
A. Pupil B. Choroid C. Lens D. Sclera E. Ciliary body F. Vitreous humor G. Aqueous humor
Which of the following are risk factors for cervical cancer? Select all that apply.
A. Smoking B. Frequent STD infections C. Use of spermicides D. Sexual activity at a young age
Gametes have half as many chromosomes as other cells in the body and are thus referred to as __________.
Fill in the blank(s) with the appropriate word(s).
When you spin while sitting in a swivel chair with your eyes closed, you can sense this movement by means of your ________
A) saccule B) cochlea C) spiral organ (organ of Corti) D) utricle E) semicircular ducts