Author Question: Which of the following structures focuses incoming light rays onto the retina? a. iris b. lens ... (Read 28 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
Which of the following structures focuses incoming light rays onto the retina?
 
  a. iris
  b. lens
  c. pupil
  d. ciliary body

Question 2

Which is a suffix that means measure?
 
  A. -scope
  B. -meter
  C. -scopy
  D. -logy


Eazy416

  • Sr. Member
  • ****
  • Posts: 360
Answer to Question 1

b
Explanation:
a. iris: is the colored portion of the eye
b. lens: correct
c. pupil: is responsible for controlling the amount of light that enters the eye
d. ciliary body: is the ring of muscle around the outer edge of the lens

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library