Author Question: The ________ of the eye controls the size of the pupil. A) lens B) iris C) eyelid D) ... (Read 71 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
The ________ of the eye controls the size of the pupil.
 
  A) lens
  B) iris
  C) eyelid
  D) cornea

Question 2

The term threshold refers to the point at which a ________ will produce a cell response.
 
  A) current
  B) receptor
  C) contraction
  D) stimulus


scikid

  • Sr. Member
  • ****
  • Posts: 300
Answer to Question 1

B

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

For a complete list of videos, visit our video library