Human Anatomy and Physiology Study Set 3
Quiz 15 :
The Special Senses
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Q24 Q24 Q24
Nutrients are delivered and waste products are carried away from the cells of the posterior segment of the eye by blood vessels.However,the cells in the cornea and lens (in the anterior segment)are avascular.Which is the best explanation for how these cells are maintained?
Q41 Q41 Q41
Dancers will use a technique called "spotting" when they perform spins of the body.By holding their head and eyes on a fixed point in front of them as their body spins they reduce the amount of head spinning and this prevents dizziness.Which of the following is the most likely explanation for why this works?
Q107 Q107 Q107
A nurse is administering Pilocarpine eye drops.The nurse instructs the patient to press on the nasolacrimal duct for 30 seconds because the medication can have some systemic side effects,such as affecting the heart rate.Explain the rationale for pressing on the nasolacrimal duct.