If I shine a light in only one of your eyes, making sure not to get any light in the other eye, both eyes would constrict their pupils.  Even if an eye does not receive stimulus, it can have a contralateral response.  Explain why

Q: The retina consist of (Select ALL that apply)     muscle fibers     bipolar cells…

A: Eye is an organ of sight. Eyes are composed of an optical portion, which focuses the visual image on…

Q: Why can the retina pull away from the back of the eyeball?

A: The retina is the thin layer of the tissue, which is present at the eyeball's back. The retina is…

Q: Why can the retina pull away from the back of the eyeball?

A: Retina is the part of the eye where the image is formed. Retina is made up of photosensitive cells…

Q: Some somatic senses are fast-adapting and others are slow-adapting. Two different types of receptors…

A: Somatic senses are the senses that allow us to perceive our external environment and our body's…

Q: Why does the blind spot from the optic disc in either eye not result in a blind spot in the visual…

A: Retina,  is a thin membrane of neural tissue at the back of eye, are composed  photoreceptors. When…

Q: Light enters the human eye through the and_______ and then passes through the pupil, which is a hole…

A: The eye is a sense organ that helps in visualizing things in the environment. It is the organ…

Q: What’s special about the fovea centralis (central fovea)? explain why we move our eyes to see a…

A: The Fovea centralis is located in the center of the macula lutea of the retina. The macula lutea is…

Q: Which the correct order of passing information of light stimuli among cells in the retina? ganglion…

A:

Q: In attempting to discern distant details, people will sometimes squint. Why does this help?

A: Squint it is defined as disorder of the eyes do not look exactly the same direction at the same…

Q: Why does your near point of vision move farther away as you age?

A: Beginning in the early to mid-40s, many adults may start to have problems seeing clearly at close…

Q: Light from the left side of the world strikes the ___________ side of the retina, while light from…

A: The intricate, multifaceted process that provides you the sensation of sight is called vision. The…

Q: anterior chamber w/ aqueous humor, cornea, iris w/pupil, lens, posterior chamber w/aqueous…

A: Eye is a sense organ which reacts to light and facilitates vision and supplied by optic nerve. Eyes…

Q: Which is the part of thehuman visual system wherethe receptors that sense light,i.e., the…

A: Eye is the chief organ of the visual system. In most mammals they are paired structures and are oval…

Q: We discussed three principles with regards to the sensory cortex (mechanisms of perception), with…

A: Somatosensory system is a division of sensory nervous system. It has neural pathways and sensory…

Q: As we progress from bipolar cells to ganglion cells to later cells in the visual system, are…

A: Introduction The visual system is made up of sensory organs and some parts of the central nervous…

Q: Those with blindsight think they can't see but can react to visual stimuli anyway. Why?     they…

A: Blind people have no light perception. It may result due to trauma, injury, or  conditions like…

Q: Why do you suppose that you are not normally aware of the blind spot in each eye?

A: Humans have a well-developed visual system comprising of eyes and brain. The last part of the eye…

Q: You are in your kitchen looking out of the window watching a group of people 100 m in the distance.…

A: The retina is the photosensitive layer in eyes that contain rod and cone cells. If light exposed on…

Q: Which structure is the middle layer of the eye? Sclera. Retina. Uveal tract Transparent cornea

A: The human eye is a complex organ composed of several layers, each with a specific function. The…

Q: Where does the bunde of ganglion axons that forms the optic nerve exit the eye? Cornea Colliculus…

A: The optic nerve is a vital component of the visual system, serving as the primary pathway for…

Q: for the rotational movement, do you mean that when I tilt my head to the right, the hair cells in my…

A: The vestibular system is responsible for our sense of balance and movement. It consists of several…

Q: Why the eye is unable to see distant objects clearly?

A: The eyes are sensory organs in the human which are responsible for interception of light senses from…

Q: When you enter a dark room from bright lighted room you are blinded momentarily. Comment.

A: The vision during the day and the night are two separate perceptions in the eye. The day vision and…

Q: Teleost focus on distant objects by _____.   moving their lens forward in their eye further from the…

A: Vision in the teleosts or fishes mainly depends on the quality of the lens. In mammals, the…

Q: Depth perception is something that takes place on a retina. True or False?

A: The ability of the eye to see things in three dimensions and to determine how far an object is…

Q: Would the receptors for equilibrium work in space at zero gravity?

A: The ear is the organ of hearing. The components of the ear are the external ear, pinna, external…

Q: The discharge rate of an off-center ganglion cell: O is not an absolute measure of light intensity…

A: Ganglion cells are the major output cells of the retina. Their axons gather at the optic disk, where…

Q: Is the retinal area in Figure the macula lutea, fovea centralis, or optic disc? Explain your choice.

A: The retina can be described as a sensory layer of nerve cells lining the eyeball's back surface. The…

Q: Why is the eye "strained" more upon viewing nearby objects then far objects?

A: An eye is the vital organ needed for sight which reacts to light and allows vision. It has…

Q: Which of the following cells do not fire action potentials? Select all that apply. Spiral ganglion…

A: An abrupt series of voltage variations across a membrane is called an action potential. The degree…

Q: Your friend had a severe infection in the cochlea, which caused deafness. The scarring from the…

A: The human body consists of a pair of special sensory organs called the ear which receives and…

Q: Receptor cells that are neurons with sensory dendrites are faster than receptor cells that are…

A:

Q: Blinking of eyelids on exposure of light is a conditioned reflex or simple action.

A: Reflex action includes nerves of body associated with CNS(central nervous system) and its…

Q: Why is it difficult to see colors in dim light?

A: The back portion of the eye that responds to light is called the retina. This is carried out with…

Q: Let us say if someone electrically stimulated the auditory receptors in your ear, what would you…

A: Hair cells in organ of corti are the receptors of the auditory sensation. Hair cells are of two…

Q: The fluid that fills the cochlear duct, where the organ of Corti is located, is called____________.…

A: The fovea is a small central region of the retina that is responsible for high visual acuity. It…

Q: Are the blind spots of your right and left eyes at the same distance?

A: The retina of human eyes are made up of light sensitive cells through which the messages are send to…

Q: Potassium channels opens, allowing potassium ions to move out. Some sodium channels open in the…

A: In the visual transduction pathway, in the dark, the concentration of cGMP is more, which opens the…

Q: Light rays from an object in the temporal half of the visual field strike which half of the retina?

A: The visual field may be defined as the total area of vision of our eyes. When our eyes are focused…

Q: Even though they are located in the back of the retinal tissue, what is the importance of the rod…

A: Introduction: The eyes are the sensory organs enabling vision. They are the paired structures…

Q: When we talk about the receptive field of a receptor cell or of a retinal ganglion cell, what are we…

A: Introduction  Receptor cells are specialized cells in the body that are capable of detecting and…

Q: The information you receive from each eye is communicated through the optic nerve to the brain.…

A: The specialized organs consisting of sensory neurons, which help us to perceive, recognize and…

Q: If there is an increase in stimulus strength on a pain receptor but more pain is not felt, which of…

A: The resting potential tells about what happens when a neuron is at rest. An action potential occurs…