This topic contains a solution. Click here to go to the answer

Author Question: A unique feature of the retinal circuitry is that a. there are more cones than rods in the ... (Read 65 times)

bcretired

  • Hero Member
  • *****
  • Posts: 525
A unique feature of the retinal circuitry is that
 
  a. there are more cones than rods in the retina.
  b. light must pass through the circuitry in order to stimulate the photoreceptors.
  c. the rods are packed together at the center of the retina.
  d. rods send signals through cones, which then activate the ganglion cells.
  e. photoreceptors do not influence the activity of surrounding nerve cells.

Question 2

The process of accommodation involves
 
  a. the lens becoming smaller as one ages.
  b. contraction of the ciliary muscles to constrict the pupil.
  c. contraction of the ciliary muscles to dilate the pupil.
  d. hardening of the lens as one ages.
  e. the lens becoming more rounded to focus on near objects.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

Answer: b. light must pass through the circuitry in order to stimulate the photoreceptors.

Answer to Question 2

Answer: e. the lens becoming more rounded to focus on near objects.




bcretired

  • Member
  • Posts: 525
Reply 2 on: Jun 22, 2018
YES! Correct, THANKS for helping me on my review


Missbam101

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

 

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

For a complete list of videos, visit our video library