Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
expand_more
expand_more
format_list_bulleted
Question
Chapter 16, Problem 5CRCAQ
Summary Introduction
To review:
The cause of blindness of premature babies who were born before 25 weeks after conception.
Introduction:
The outermost covering of the eye is known as sclera and the cornea. The cornea forms a dome-shaped structure at the front side of the eye. The inner layer of the eye is the retina that includes rod and cone photoreceptor cells. These cells provide vision at different intensities of light. Various types of disorders are associated with vision and some of them are related to age while others are related to other reasons. Some of the common disorders that are associated with visualization are cataract, glaucoma, and some other conditions that are associated with accommodation.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Research suggests that newborns are able to discriminate their own language from a foreign language, and their mother's voice from a stranger's voice. In contrast, their visual abilities are much less developed at birth, and develop rapidly over the first few months of life. One explanation for this is:
A) Fetuses get equivalent auditory and visual experience before birth, but before they are born they are only able to learn from auditory experience
B) Fetuses do not experience sensory information before birth (i.e., they cannot hear, see, smell, etc.) but language develops faster than vision because it is more evolutionarily important
C) Fetuses get equivalent auditory and visual experience before birth, but vision requires additional postnatal triggers to be fully activated
D) Fetuses can hear many types of sounds prenatally but have limited visual experience until after birth.
You are watching the stars at night, and you never seem to be looking at the right spot to catch the brightest meteors. Which of the following might explain this?
a)Your fovea contains mostly cones; thus you see dim light especially well when looking right at it.
b)Your peripheral retina contains more rods, which are more sensitive to dim light than cones; thus objects in your peripheral vision appear brighter in dim light situations.
c)Detection of light depends mostly on its color rather than intensity; thus cones play a larger role in detection of light in dim light situations.
d) all of the above.
( well explain the correct answer and type answer).
Which of the following is true about infants’ visual acuity?
a. Poor visual acuity early in life allows key features of the visual world to “pop out”
b.Before 3 months, infants are not able to make sense of their visual world
c.It’s not possible to test visual acuity before infants are 6 months
d.Newborns have poor visual acuity, but excellent colour vision
Chapter 16 Solutions
Human Anatomy
Ch. 16 - Prob. 1CYUCh. 16 - What type of cell are the olfactory receptors?...Ch. 16 - Prob. 3CYUCh. 16 - What muscle is not functioning in a person whose...Ch. 16 - Prob. 5CYUCh. 16 - Prob. 6CYUCh. 16 - Prob. 7CYUCh. 16 - Prob. 8CYUCh. 16 - Prob. 9CYUCh. 16 - Prob. 10CYU
Ch. 16 - Prob. 11CYUCh. 16 - Prob. 12CYUCh. 16 - Prob. 13CYUCh. 16 - Which auditory ossicle abuts the tympanic...Ch. 16 - Prob. 15CYUCh. 16 - Prob. 16CYUCh. 16 - Prob. 17CYUCh. 16 - Prob. 18CYUCh. 16 - What type of deafness results from damage to the...Ch. 16 - Prob. 20CYUCh. 16 - What brain regions receive input from the...Ch. 16 - Prob. 1RQCh. 16 - Prob. 2RQCh. 16 - The transmission of sound vibrations through the...Ch. 16 - Of the neurons in the retina, which form the optic...Ch. 16 - Blocking the scleral venous sinus might result in...Ch. 16 - Conduction of sound from the middle ear to the...Ch. 16 - The structure that allows the air pressure in the...Ch. 16 - The receptors for static equilibrium that report...Ch. 16 - Paralysis of a medial rectus muscle would affect...Ch. 16 - Prob. 10RQCh. 16 - The optic disc is the site where (a) more rods...Ch. 16 - Prob. 12RQCh. 16 - Prob. 13RQCh. 16 - (a) What is the precise location of the olfactory...Ch. 16 - Prob. 15RQCh. 16 - Name two special senses whose receptor cells are...Ch. 16 - (a) Describe the embryonic derivation of the...Ch. 16 - Prob. 18RQCh. 16 - Prob. 19RQCh. 16 - Compare and contrast the functions of the interior...Ch. 16 - (a) What is the difference, if any, between a...Ch. 16 - Prob. 22RQCh. 16 - Prob. 1CRCAQCh. 16 - Prob. 2CRCAQCh. 16 - Dr. Nakvarati used an instrument to blow a puff of...Ch. 16 - Lionel suffered a ruptured artery in his middle...Ch. 16 - Prob. 5CRCAQCh. 16 - Prob. 6CRCAQCh. 16 - Prob. 7CRCAQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Grandpa can't ever seem to hear what his little granddaughters say. He also can't hear that high-pitched whine in the Subaru engine that everyone else seems to hear. You suspect that grandpa has too much ear wax built up in his external auditory canal, and therefore has developed conduction deafness has damage to the vestibulocochlear nerve has damaged either the utricle or the saccule, though it will be hard to tell which one without further testing has damaged the hair cells closest to the oval window has "selective" hearing loss, because the granddaughters are always trying to get him to play with them when he's tired, and he doesn't want to work on that darned car anymore either.arrow_forwardGeorge was under a lot of stress. His final semester examination was only 2 days away, and he was not prepared at all. To make matters worse, his right eyelid suddenly started twitching, and he couldn’t concentrate. Should George be worried about his eye? What is the reason behind this twitching?arrow_forward1) Those with blindsight think they can't see but can react to visual stimuli anyway. Why? they are faking being blind: they can see just fine, just like us the part of the cortex that controls conscious vision is still intact because the part of their visual system that controls visual reflexes is still intact because their eyes work fine and they also don't actually have any brain damage 2) Those with blindsight think they can't see but can react to visual stimuli anyway. Why? they are faking being blind: they can see just fine, just like us the part of the cortex that controls conscious vision is still intact because the part of their visual system that controls visual reflexes is still intact because their eyes work fine and they also don't actually have any brain damagearrow_forward
- What is one of the many benefits of having both direct and periphery vision at your disposal? A) It serves to entertain us by making optical illusions fun. B) There is no real survival benefit to having direct and periphery vision. C) There is a survival benefit where periphery vision catches sudden movements and direct vision depicts greater detail. D) Having periphery vision is the reason why we see colors, which have survival benefits.arrow_forward(Bonus) Deafness and hearing loss are a widespread issue. According to WHO, currently more than 1.5 billion people (nearly 20% of the global population) live with hearing loss. From what you learned about our auditory system, briefly explain what would happen to hearing in each of the following scenarios. (a) the tectorial membrane can't hold its position and is pushing onto the auditory hair cells constantly. (b) the auditory hair cells near the base of the cochlea are damaged and dead. (c) the endolymph potassium concentration is lower than normal. (d) the perilymph potassium concentration is lower than normal.arrow_forwardWhy does your near point of vision move farther away as you age?arrow_forward
- Three patients have suffered destruction of different portions of their visual pathway. Patient 1 has lost the right optic tract, patient 2 has lost the nerve fibers that cross at the optic chiasm, and patient 3 has lost the left occipital lobe. Draw a picture of what each person would perceive through each eye when looking at a white wall.arrow_forwardWhy should children with hearing aids utilize FM technology?arrow_forwarda 5 year old boy is diagnosed with color blindness , this boy most likely has an abnormally in which of the following ?. A) cones, B) lateral geniculate nucleus of the thalamus . C) lens, D) optic nerve, E) Rodsarrow_forward
- A Physician Assistant student on clinical attachment in the Northern part of Ghana noted a high incidence of people reporting difficulty with night vision which has been due to lack of vitamin A in their diet. Explain why deficiency of vitamin A causes poor night vision or night blindness.arrow_forward4a) Which of the following is true about infants’ visual acuity? Select one: i. Poor visual acuity early in life allows key features of the visual world to “pop out” ii. Before 3 months, infants are not able to make sense of their visual world iii. It’s not possible to test visual acuity before infants are 6 months iv. Newborns have poor visual acuity, but excellent colour vision 4b)You see the results of an eye-tracking study in which infants were required to look at human faces. You see that infant A spent most time looking at the contour of the face, while infant B spent a lot of time looking at the eyes and the mouth. You conclude that infant B is most likely: Select one: i. Showing signs of a developmental disorder ii. Older than infant A iii. Bilingual iv. Younger than infant A 4c)Which statement is FALSE regarding infants’ perception abilities at birth? Select one: i. Even young babies have visual biases that help them organize their visual world (e.g., use of motion cues) ii.…arrow_forward32 A 57-year-old woman is admitted to the hospital because of worsening headaches and altered vision. Visual testing shows a right homonymous hemianopia. A mass involving which of the following structures is most likely responsible for this visual field defect? A) Left optic nerve B) Left optic radiation C) Optic chiasm D) Right optic nerve E) Right optic radiationarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Visual Perception – How It Works; Author: simpleshow foundation;https://www.youtube.com/watch?v=DU3IiqUWGcU;License: Standard youtube license