Author Question: The nurse is aware that the patient has 20/40 vision. This means that the patient can see at 20 feet ... (Read 56 times)

arivle123 · **on:** Jul 11, 2018

The nurse is aware that the patient has 20/40 vision. This means that the patient can see at 20 feet what the normal eye can see at _______ feet.

a. 100
b. 200
c. 300
d. 400

Question 2

The nurse explains that the negative feedback system controls hormone release by communication between:

a. the pituitary and the target organ.
b. the thymus and the blood stream.
c. lymphatic system and the target organ.
d. central nervous system and the blood stream.

kthug · **Reply #1 on:** Jul 11, 2018

Answer to Question 1

ANS: B
The Snellen Eye Chart tests visual acuity. A vision evaluation of 20/40 means that the patient can see at 20 feet what the person with normal vision can see at 200 feet.

Answer to Question 2

ANS: A
The amount of hormone released is controlled by a negative feedback system. When the level of the particular hormone is appropriate, the target organ signals the pituitary to stop the stimulation of the target organ.