Cone
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Cone (medicine)
Cone (pronounced: /koʊn/) is a term used in various fields of medicine.
Etymology
The term "cone" is derived from the Greek word "kōnos", meaning "a peak or point".
Definition
In medicine, a cone can refer to several different things depending on the context:
- In ophthalmology, cones are one of two types of photoreceptor cells in the retina of the eye. They are responsible for color vision and function best in relatively bright light.
- In radiology, a cone is a three-dimensional geometric shape that is used to describe the shape of the beam produced by some forms of radiation therapy.
- In anatomy, the term "cone" can also refer to any cone-shaped structure or part of the body, such as the pineal gland, which is also known as the "pineal cone".
Related Terms
- Cone biopsy: A procedure in which a cone-shaped piece of tissue is removed from the cervix for examination under a microscope.
- Cone cells: The photoreceptor cells in the retina of the eye that are responsible for color vision.
- Cone shell: A type of marine snail that produces a venom used in some forms of pain management.
See Also
External links
- Medical encyclopedia article on Cone
- Wikipedia's article - Cone
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