Explanation Only cone cells are present in the fovea. In general, the ratio of the number of photoreceptors to ganglion cells is about 105 to 1. The ratio of the number of photoreceptors to ganglion cells in the fovea is 1 to 1. The 1:1 ratio of the neurons helps in the transmission of a very clear nerve impulse or message to the brain. The peripheral regions of the retina comprise a mixed distribution of the cones and rods. The ratio of the number of neurons to the photoreceptor cells in the peripheral region of the retina is greater than that in fovea...

15th Edition

ISBN: 9781259864629

Author: Fox, Stuart Ira

Publisher: Mcgraw-hill Education,

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Question

Chapter 10, Problem 28RA

Summary Introduction

To review:

1. The reason behind the formation of clearer image on the fovea centralis than the periphery of the retina.

2. The higher sensitivity of the corners of the eyes to light than the fovea.

Introduction:

Fovea centralis is a pit that is present in the macula lutea of the retina. It provides clarity to vision.Â Rod and cone cells are present throughout the retina in different concentrations. Fovea centralis is the region where only cone cells are present. It does not contain rod cells.

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Chapter 10, Problem 27RA

Chapter 10, Problem 29RA

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Chapter 10 Solutions

Human Physiology

Ch. 10 - Prob. 1aCP Ch. 10 - Prob. 1bCP Ch. 10 - Prob. 1cCP Ch. 10 - Prob. 2CP Ch. 10 - Prob. 3CP Ch. 10 - Define the term sensory acuity and explain how...Ch. 10 - Prob. 4bCP Ch. 10 - Prob. 5CP Ch. 10 - Prob. 6CP Ch. 10 - Prob. 7aCP

Ch. 10 - Describe the structure of the semicircular canals...Ch. 10 - Prob. 8CP Ch. 10 - Prob. 9CP Ch. 10 - Prob. 10CP Ch. 10 - Prob. 11CP Ch. 10 - Using a line diagram, show how parallel rays of...Ch. 10 - Prob. 13CP Ch. 10 - Describe the layers of the retina and trace the...Ch. 10 - Prob. 14bCP Ch. 10 - Describe the electrical state of photoreceptors in...Ch. 10 - Prob. 16aCP Ch. 10 - Prob. 16bCP Ch. 10 - Prob. 17CP Ch. 10 - Describe the way in which ganglion cells typically...Ch. 10 - How can the arrangement of the receptive fields of...Ch. 10 - Describe the stimulus requirements of simple...Ch. 10 - Prob. 1RA Ch. 10 - Match the vestibular organ on the left with its...Ch. 10 - Prob. 3RA Ch. 10 - Prob. 4RA Ch. 10 - Prob. 5RA Ch. 10 - Cutaneous receptive fields are smallest in a. the...Ch. 10 - Prob. 7RA Ch. 10 - The receptors for taste are a. naked sensory...Ch. 10 - Prob. 9RA Ch. 10 - Prob. 10RA Ch. 10 - Prob. 11RA Ch. 10 - Glasses with concave lenses help correct a....Ch. 10 - Prob. 13RA Ch. 10 - A bar of light in a specific part of the retina,...Ch. 10 - Prob. 15RA Ch. 10 - Prob. 16RA Ch. 10 - Prob. 17RA Ch. 10 - Epithelial cells release transmitter chemicals...Ch. 10 - Explain what is meant by lateral inhibition and...Ch. 10 - Prob. 20RA Ch. 10 - Prob. 21RA Ch. 10 - Explain the relationship between smell and taste....Ch. 10 - Prob. 23RA Ch. 10 - Prob. 24RA Ch. 10 - Prob. 25RA Ch. 10 - Describe the sequence of changes that occur during...Ch. 10 - Prob. 27RA Ch. 10 - Prob. 28RA Ch. 10 - Prob. 29RA Ch. 10 - Prob. 30RA Ch. 10 - Describe the receptive fields of retinal ganglion...Ch. 10 - Prob. 32RA Ch. 10 - Discuss the different functions of the pigment...Ch. 10 - Prob. 34RA Ch. 10 - Prob. 35RA Ch. 10 - People with conduction deafness often speak...Ch. 10 - Prob. 37RA Ch. 10 - Prob. 38RA Ch. 10 - Discuss the role that inertia plays in the...Ch. 10 - Prob. 40RA Ch. 10 - Prob. 41RA Ch. 10 - Prob. 42RA Ch. 10 - Prob. 43RA Ch. 10 - Prob. 44RA Ch. 10 - Prob. 45RA Ch. 10 - Prob. 46RA

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Solution Summary: The author explains that the fovea centralis is a pit in the macula lutea of the retina and provides clarity to vision. The ratio of photoreceptors to ganglion cells is 1 to 1.

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