When the ciliary muscle is contracted, the following will: a) lens to become more spherical b) pupil to be dilated c) pupil to contract d) the lens to be flattened

Q: Name one defect of vision which cannot be corrected by any type of spectacle lenses?

A: The eye is a complex organ that provides vision with the help of accessory organs (lacrimal…

Q: What is the visual outcome if the specific extrinsic eye muscle involved in convergence reflex did…

A: The extrinsic eye muscles control the movement of the eye. There are 6 types of extrinsic muscles…

Q: Name the two structures in the eye responsible for bringing about the change in the shape of the…

A: The eye is one of the sensory organs present in the body of an organism. It is responsible for…

Q: What makes the lens of the eye clear? What happens when cataracts form?

A: The eye lens is the biconvex transparent structure that refracts light and focuses on the retina. It…

Q: which cells direct colored light? Are these cells in the choroid,sclera, or retina layer of the eye?

A: The eye has rods and cones. Rods help us to see in the dark. Cones help us to see in bright light.

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: How does the eye’s lens change shape to allow focusing of distant objects? What defects make…

A: The Eye is an organ of sight that perceives visuals from the environment and sends electro-chemical…

Q: What superficial accessory structure of the eye would be the first to be affected by inadequate tear…

A: Eye is one of the sensory organs present in the body of an organism. It is responsible for sensing…

Q: Contraction of a muscle usually puts more tension on a structure, but contraction of the ciliary…

A: Ciliary muscle present in the eye is a smooth muscle and mesodermal in origin and is responsible for…

Q: Name the structure that provides and maintains shape of eyeball.

A: Eye is the chief organ of the visual system. They are involved in detecting the light rays and…

Q: How do the ciliary body and lens focus light from a near object on the retina?

A: The eyes are one of the sensory organs which allow us to see the environment surrounding us. The…

Q: What are olfactory cells ? Explain the importance of the olfactory cells ?

A: Olfactory, or smell nerve cells, are invigorated by the scents around us- - the aroma of a gardenia…

Q: What would vision be like after a drug has destroyed all the cones in the retina?

A: About 2 million Americans annually suffer from substance-abuse disorders. According to a report,…

Q: What happens to the pupil of the eye when the light is very bright?

A: The pigmented portion of the eye which is present in the eyeball's middle layer (vascular tunic) is…

Q: Name the accessory structures that protect the human eye?

A: Eye is the structure which helps to see the objects and the surrounding environment around us. when…

Q: What is olfactory bulb?

A: Olfaction is a chemoreception, which occurs through the sensory olfactory system that forms the…

Q: What is the function of the Olfactory Bulb?

A: Introduction: The olfactory bulb is an anatomical structure that is present in the forebrain of…

Q: By what the transparent lens in the human eye is held in its place?

A: Eye is one of the sensory organs present in the body of an organism. It is responsible for sensing…

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: Which structure of the eye is responsible for focusing visual stimuli?

A: Introduction :- The eye has a spherical ball form with a small protrusion in the front. There are…

Q: What happens if the ciliary muscle in the eye is contracted?

A: If the ciliary muscle in the contracted lens become more spherical and has increased focussing power…

Q: What structures are parts of the vascular layer of the eye?

A: The vascular layer of the eye is anatomically situated just under the fibrous layer of the eye.

Q: Describe the muscles that control eye movement

A: The voluntary or involuntary movement of the eyes occurs in the eye movement serving to in getting,…

Q: While a student is examining the anterior half of the eye in cadaver lab, the cadaver lens falls…

A: The lens is made up transparent  proteins called crystallins . The average concentration of lens…

Q: Which tunic/layer of the eye is the most difficult to cut?

A: The eye is the organ of visual system that consists of rod and cone cells. These cells are present…

Q: What are the olfactory gland and Bowman's gland? and what are their functions ? Explain with…

A: Nose or nasal cavity is the major part of our body which is responsible for the sense of smell or…

Q: When the muscles connected to the crystalline lens contract fully, its focal length is 16.5000 cm.…

A: INTRODUCTION The human eye forms a sharp image on the retina very much like the simple camera we…

Q: Which extrinsic eye muscles abduct the eye (move the eye laterally)?

A: Step 1 The extraocular muscles are located in the orbit but are extrinsic and separate from the…

Q: What is the definition of tympanometry?

A: Tympanometry is a kind of examination which is used for testing: Status of middle ear Assessing the…

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

A: The retina is the back part of the human eye that contains the different type of cells that respond…

Q: Describe the anatomy and function of the accessory structures of the eye, including: eyebrows,…

A: The eye’s accessory structures: - the supplementary components of the eye and the protective…

Q: Paralysis of a medial rectus muscle would affect (a) accommodation,(b) refraction, (c) depth…

A: There are six extrinsic eye muscles that help to keep the eyeball in shape. They also regulate the…

Q: What anatomical arrangement causes the blind spot to exist?

A: The retina is the innermost layer of the eye which is made up of light-sensitive cells. These light…

Q: What is the function of binocular vision?

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

Q: Which convex lens is called as converging lens?

A: A convex lens is a lens with two spherical surfaces that bulge outward from the middle. Therefore,…

Q: What is a blind spot of the eye?

A: When the light reaches to our retina, it sends electrical bursts with the help of the optic nerve to…

Q: What is the role of Rhodopsin in the retina?

A: Rhodopsin consists of two parts: an opsin molecule connected to a chromophore, 11-cis-retinal, which…

Q: Explain why an eye has a blind spot.

A: Retina is a part of our eye on which image is formed. Rod and cone cells help in this image…

Q: What difference did you note in the size of the pupils when one eye was exposed to bright light and…

A: Eyes are sense organs. The amount of light entering the eye is controlled by the pupil and this…

Q: Name the structure that hold lens in its position.

A: Humans have a pair of eyes located in sockets of the skull known as orbits. The human eyeball is…

Q: Why do rods provide greater visual sensitivity while cones provide better acuity?

A: Rods are cylindrical in shape and thin. Rods are more in number (120 million ). Cones are conical in…

Q: Presbyopia is a condition in which a person loses part or all of their capacity to adapt to changes…

A: Introduction :- Presbyopia, also known as "ageing eye," is a condition in which the eye loses its…

Q: Name the muscle responsible for bringing change in the focal length of the eye lens?

A: Contraction or relaxation of muscles in an eye is responsible for focusing the object, phenomenon…

Q: What is the trade-off between acuity and sensitivity and how does the visual system deal with this?

A: Acuity is the ability to see, hear, or understand something easily. Visual acuity especially relates…