Answered: Describe the effect on vision of a…

Describe the effect on vision of a tumor in the hypothalamus or pituitary gland that compresses the optic chiasma, destroying the axons crossing through this structure.

Comprehensive Medical Assisting: Administrative and Clinical Competencies (MindTap Course List)

6th Edition

ISBN:9781305964792

Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Publisher:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Chapter28: Gerontology

Section: Chapter Questions

Problem 7CR

See similar textbooks

Related questions

Q: Discuss the sensory symptoms

A: Sensory symptoms are a common manifestation of a disease called as multiple sclerosis. Multiple…

Q: Fill in the blank: Olfactory sensations usually fade rapidly as a result of…

A: Special senses include specific sensitive receptors that are involved in providing detailed…

Q: Explain about the Treating Retinal Blindness ?

A: Retina is a tissue layer which is located at the back of the eye. This layer of tissue is light…

Q: Describe how electrical stimulation is used in a cochlear implant, in motor prostheses, and in…

A: The cochlear implant, which uses electric currents to directly stimulate the auditory nerve in a…

Q: Explain what causes glaucoma.

A: The optic nerve is situated in the back of the eye and It is also known as the second cranial nerve…

Q: What are the functions of each of the two branches of the vestibulocochlear (VIII) nerve?

A: The cranial nerves are 12 nerve pairs that can be observed on the brain ventral surface. Some nerves…

Q: Explain why one early symptom of vitamin A deficiency is the impaired vision at night?

A: Vision is a sense related to eyes. Eye is one of the sensory organs present in the body of an…

Q: Define and describe decussation and indicate the first level within the Central Auditory Nervous…

A: Decussation is the crossing of the nerves. The word deca in Latin is the roman numeral for ten (X).…

Q: Distinguish how blindness can occur in maculardegeneration, glaucoma, and cataracts.

A: The eye is a special sensory organ that receives light from the environment and sends signals to the…

Q: A concussion is a mild traumatic brain injury. How might a concussion acutely affect hearing and…

A: *A concussion is traumatic brain injury which will affects brain function Caused by a blow to the…

Q: Describe the structure of the retina.

A: The visual system is comprised of the eyes which help in perceiving and processing visual detail.…

Q: What would cause the greatest loss of visual function—trauma to cranial nerve III, IV, or VI? Why?

A: Cranial nerves are the set of nerves that arise out directly from the brain or brainstem. Cranial…

Q: What aspect of the neural circuity in the pupillary light reflex is responsible for the consensual…

A: By receiving and processing the energy of light as it enters the eye, eyes enable visualization of…

Q: Trace an impulse from the retina to the visual cortex

A: The eye is the sensory organ that helps in vision. It helps in visualizing objects, color, light…

Q: Explain the Inhibition of Pain?

A: The gate management theory of pain asserts that non-painful input closes the nerve "gates" to…

Q: Explain why it is not uncommon to develop pink eye after having a cold?

A: Pink eye or conjunctivitis is a common eye infection caused due to bacteria or virus that normally…

Q: Describe the steps in the pupil reflex.

A: Answer: Introduction: Pupillary reflexes include the autonomic constituent of the oculomotor…

Q: Explain how vibration of the tympanic membrane ultimately causes cochlear hair cells to release a…

A: Ans: Tympanic membrane: The region of the ear which separates the outer and middle ear is referred…

Q: The suprachiasmatic nucleus receives direct input from the retina and enables light dark circles to…

A: The retinal ganglion cell (RGC) is a type of neuron that is located near the inner surface (the…

Q: Differentiate between blind spot and yellow spot.

A: The eye is a three-layered, fluid filled ball divided into two chambers. The human eye is designed…

Q: Differentiate conductive hearing loss from sensorineuralloss and give an example of each.

A: Hearing is a mode of communication. Hearing loss can result from certain infectious diseases,…

Q: a) choose one part of the auditory sensorineural mechanism--the inner ear or retrocochlear auditory…

A: The human ear serves as an amazing transducer, converting sound energy to mechanical energy to a…

Q: Give exact location and function of optic nerve

A: The location of the c nerve is in the back eye. It is also known as cranial nerve or cranial nerve…

Q: Describe the eye defect that causes color-deficient vision.

A: The eyes are the main organ of the visual system. They are responsible for providing the animals…

Q: Fill in the blank: The olfactory interpreting centers are located deep within the temporal lobes…

A: The brain is the part of the central nervous system. The brain and spinal cord are the components of…

Q: What is meant by Optic chiasm?

A: The optic nerve is the second cranial nerve that helps in the vision. The optic nerve occurs in…

Q: The optic nerve is formed by __________. a. ganglion cell dendrites b. ganglion cell axons…

A: The optic nerve is a bundle of more than 1 million nerve fibers that carry visual messages. We have…

Q: which cannot be corrected by any type of spectacle lenses?

A: The eye is a complicated organ that works in conjunction with other organs to provide vision…

Q: Explain the action of the lens and senpensory ligaments during near and far vision.

A: A biconvex, transparent structure in the eye that refracts the light with the help of cornea and…

Q: Explain the pain pathway and how morphine alters the concious perception of pain

A: Pain can be defined as a somatic and emotional sensation that is unpleasant in nature. It is…

Q: fibers project from the optic chiasm to the midbrain?

A: The optic chiasm is an X-shaped structure formed by the crossing of the optic nerves in the brain.…

Q: Explain the phenomenon of referred pain?

A: Referred pain refers to mislocalisation of pain. This refers to the difference in the origin and the…

Q: Explain why one early symptom of vitamin A deficiency is impaired vision at night (often called…

A: Vitamin A : a. It is a class of nutritionally unsaturated hydrocarbons that include various…

Q: (a) What is hypermetropia?(b) What are the two causes of this defect of vision?

A: Human eye is an organ that reacts to light and allows vision. Cone and rod cells in the retina allow…

Q: What part of the PNS mediates the pupillary response?

A: The nervous system of the human body is divided into the central nervous system (CNS), enteric…

Q: How can someone who has never heard of "phantom limb sensation" cause distress for those who…

A: Answer : " Phantom limb sensation " is the sensation or feeling felt by most of the amputees that…

Q: Give a brief account of Mechanism of vision.

A: Light rays enter the eye through the cornea which is considered as the clear front “window” of the…

Question

Describe the effect on vision of a tumor in the hypothalamus or pituitary gland that compresses the optic chiasma, destroying the axons crossing through this structure.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Introduction

VIEW

Answer

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, nursing and related others by exploring similar questions and additional content below.

Similar questions

What happens at the optic chiasma? What is the consequence of this?
Unilateral Cerebral strokes can cause deficits in motor control, somatic sensation and vision. However, they do not cause deficits in hearing. The explanation for this is: Auditory information does not reach the cortex Auditory information only goes to one hemisphere. Auditory information goes to both hemispheres How are the outer segments of photoreceptors positioned? between bipolar cells and horizontal cells in the outermost layer of the retina in the ganglion cell layer farthest from the pigment epithelium
Name the condition in which light rays are formed behind the retina.
Draw an anatomical diagram of a pituitary gland that compresses the optic chiasma, destroying the axons crossing through the midline of the structure. Label structures and highlight the axons/fibers that are impacted
a) Based upon how the neural membrane functions, briefly explain how electrical stimulation can cause a neuron to generate an action potential. Describe in one sentence a type of action potential that can be generated by electrical stimulation, but that cannot be generated by synaptic inputs. b) The central part of the retina consists largely of cones, which are responsible for colour vision in normal sight. However, presently available retinal prostheses are not able to reliably provide a perception of colour for people implanted with these devices. Explain why people with a retinal prosthesis are currently unable to reliably perceive colour.
Name the spot in the retina where no photoreceptor is present and optic nerve is formed.
Starting with the optic nerve, trace the action potential from the right temporal visual field to the visual cortex. What is the possible effect of lesions of the visual pathway?
A pituitary tumor can cause perceptual losses in the lateral visual field. The pituitary gland is located directly inferior to the hypothalamus. Why would this happen?
Explain why one early symptom of vitamin A deficiency is impaired vision at night (often called night blindness).
Which of the following are associated with retina?
Define about Optic chiasma ?
A pituitary tumor can cause perceptual losses in the lateral vision field. The pituitary gland is located directly inferior to the hypothalamus. Why would this happen?