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The lens of the eye would never be able to focus at varying distances or in varied light settings if the iris muscles did not work. Well if we never had the iris we would need some sort of design for the eye to do the job of focusing and adjusting to the light but God did a good enough job by giving us the iris and a lot of other mechanics of the eye.
What else can I help you with?
Are the iris and ciliary muscles located in the front part of the choroid muscles Involuntary?
iris and ciliary muscles
What is the opening that is controlled by the muscles of the iris?
The opening that is controlled by the muscles of the iris is called the pupil. The iris is responsible for adjusting the size of the pupil in response to different lighting conditions.
When the radial muscles of the iris contract, what effect does this have on the size of the pupil?
When the radial muscles of the iris contract, the pupil dilates or becomes larger.
Which human structure is moved by involuntary musicles?
There are a number but one example are the muscles of the intestines (which undergo peristalsis), another example would be the muscles in the iris of the eye.
What will happen to your eyes when you enter a bright room?
When suddenly exposed to bright light, your pupils will automatically constrict (actually the constrictor muscles of the iris will contract, causing the iris to expand and narrow the pupil). Also, it is likely your eyelids will squint shut.
The iris of the eye has two main types of muscles. Name these two muscles and how they affect the pupil.?
The iris of the eye has two main types of muscles - the radial muscle and the sphincter muscle. The radial muscle lies on the outside of the iris, and the sphincter muscle surrounds the pupil, allowing it to dilate and contract.
Colored part of the eye that contracts or relaxes in response to light?
The Iris contains the muscles that control Pupil size.
What is the name of the part of the iris bordering the pupil?
The IRISThe pupillary muscles located on the inner edge of the iris forms the outer boundary of the pupil. The ciliary muscles are located throughout the rest of the iris and into the ciliary body. The collarette is the region of the iris separating the pupillary muscle from the ciliary muscle. It also occupies the region where the sphincter muscle and dilator muscles overlap.
What is the round colored part of the eye which has muscles that cause the eye to move?
The round colored part of the eye is called the iris. It contains muscles that control the size of the pupil, letting light in and helping the eye focus on objects at different distances.
What body part is the same as the iris diaphragm?
The radial and circular muscles of the iris.
The colored ring of muscles that controls the size of the pupil is called?
iris
The colored part of the eye that contains muscles to contract or expand the pupil is the?
The colored part of the human eye that controls how much light that passes through the pupil is called the iris.
