The structure and action of the pupillary constrictor and dilator; anatomy of their autonomic innervation; and the photo pupillary reflex. Introduction: The perception of items that are present in the surroundings is termed as sight or vision. This perception occurs by means of reflection or emission of light from those objects. The retina, the neural component, is one of the principle components of the eyeball. It consists of three cell layers, and these cell layers are composed of ganglion cells, bipolar cells and photoreceptor cells. The photoreceptor cells are involved in the absorption of light and produce an electrical or chemical signal. These cells are of three kinds and they are cones, rods, and some ganglion cells. These cone and rod cells generate visual images and these cells are related ependymal cells present in the brain. Photopsin and rhodopsin is the visual pigment present in a cone cell and rod cell, respectively. Cone cells are responsible for photopic vision (day vision) and trichromatic vision (color vision), and rod cells are responsible for scotopic vision (night vision).

Question

Want to see the full answer?

Answer 1

Question

Chapter 16.5, Problem 10AYLO

Summary Introduction

To discuss:

The structure and action of the pupillary constrictor and dilator; anatomy of their autonomic innervation; and the photo pupillary reflex.

Introduction:

The perception of items that are present in the surroundings is termed as sight or vision. This perception occurs by means of reflection or emission of light from those objects. The retina, the neural component, is one of the principle components of the eyeball. It consists of three cell layers, and these cell layers are composed of ganglion cells, bipolar cells and photoreceptor cells. The photoreceptor cells are involved in the absorption of light and produce an electrical or chemical signal. These cells are of three kinds and they are cones, rods, and some ganglion cells. These cone and rod cells generate visual images and these cells are related ependymal cells present in the brain. Photopsin and rhodopsin is the visual pigment present in a cone cell and rod cell, respectively. Cone cells are responsible for photopic vision (day vision) and trichromatic vision (color vision), and rod cells are responsible for scotopic vision (night vision).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Can you fill out those terms

Explain down bellow what happens to the cell: Decreased pH in mitochondria Increased ATP Decreased pH in cytosol Increased hydrolysis Decreasing glycogen and triglycerides Increased MAP kinase activity Poor ion transport → For each one:→ What normally happens?→ What is wrong now?→ How does it mess up the cell?

An 1100 pound equine patient was given 20 mg/kg sucralfate 3 times a day, 2.8 mg/kg famotidine twice a day, and 10mg/kg doxycycline twice a day. Sucralfate comes as a 1 gm tablet, famotidine as 20 mg tablets, and doxycycline as 100mg tablets. All are in bottles of 100 tablets.How many total mg are needed for the patient and how many tablets of each would be needed to provide each dose?How many bottles of each would be needed to have available if this patient were to be on this drug regimen for 5 days?