The nurse is explaining the anatomy of the eye to an adolescent ...

[jlmhmf]

The nurse is explaining the anatomy of the eye to an adolescent client who wants to start wearing contact lenses. What eye structure will the nurse identify as supplying nutrients to the eye and removing wastes?
 
  1. Conjunctiva layer
  2. Vitreous humor
  3. Lacrimal apparatus
  4. Aqueous humor

Question 2

A client is prescribed an optic eye medication that will mimic the action of the sympathetic nervous system. The nurse expects that this medication will:
 
  1. prepare the eye for near vision.
  2. increase the ability of the eye to tear.
  3. constrict the pupil.
  4. dilate the pupil.

[mmpiza]

Answer to Question 1

Correct Answer: 4
Rationale 1: The conjunctiva is the mucous membrane that lines the inner surfaces of the eyelids and the anterior portion of the sclera.
Rationale 2: Vitreous humor is located in the posterior chamber of the eye and helps to keep the retina in place.
Rationale 3: The lacrimal apparatus produces tears and helps to protect the eye.
Rationale 4: Aqueous humor is the fluid contained in the anterior chamber that helps maintain the shape of the eye and circulates to supply nutrients and remove waste.
Global Rationale: Aqueous humor is the fluid contained in the anterior chamber that helps maintain the shape of the eye and circulates to supply nutrients and remove waste. The conjunctiva is the mucous membrane that lines the inner surfaces of the eyelids and the anterior portion of the sclera. Vitreous humor is located in the posterior chamber of the eye and helps to keep the retina in place. The lacrimal apparatus produces tears and helps to protect the eye.

Answer to Question 2

Correct Answer: 4
Rationale 1: Drugs that mimic the action of the sympathetic nervous system do not prepare the eye for near vision.
Rationale 2: Drugs that mimic the action of the sympathetic nervous system do not increase the eye's ability to tear.
Rationale 3: Drugs that mimic the action of the sympathetic nervous system do not constrict the pupil.
Rationale 4: Muscles that dilate the pupil are under the control of the sympathetic nervous system.
Global Rationale: Muscles that dilate the pupil are under the control of the sympathetic nervous system. Pupil constriction is a result of parasympathetic stimulation. Preparing the eye for near vision and increasing the ability to tear are not reasons these drugs are administered.

[jlmhmf]

Thank you!

[mmpiza]

Always glad to help...