Author Question: Which of the following structures works like a camera shutter to adjust the amount of light entering ... (Read 105 times)

renzo156 · **on:** Jul 2, 2018

Which of the following structures works like a camera shutter to adjust the amount of light entering the eye?

a. The sclera
b. The iris
c. The lens
d. The posterior chamber

Question 2

When explaining the priorities of helmet removal to a candidate patroller, you would stress:

a. sliding the helmet rearward off the head so that you don't hit the patient's nose.
b. sliding the fingers under the occiput so that the head doesn't drop backward.
c. applying a cervical collar before removing the helmet to help stabilize the head.
d. removing the helmet to ensure the patient's proper alignment on a backboard.