Answer:
The correct term is - extrinsic stain.
Explanation:
Extrinsic stains are normally present on the surface of a tooth and occur due to taking pigmented beverages such as coffee, tea, carbonated drinks, caramel coloring, and foods. Smoking cigarettes is also one of the reasons that can cause an extrinsic stain.
This can be removed by dentists or professionals like hygienists. The stain particles act on the outer surface of the teeth and pigmented them which cause stain yellowish or brownish in individuals.
Thus, the correct answer is - extrinsic stain.
Answer: The cornea is avascular.
Explanation:
The cornea can be defined as the clear front membrane on the surface of eyeball. It lies in the front of the iris and pupil. It allows the light to enter the eye. A cornea transplant is recommended in patients who suffer from vision problems due to thinning of cornea, keratoconus, loss of vision and cloudiness of cornea.
It takes about 2 to 3 months to recover after surgery. The healing is slow because the cornea is avascular. The tissue of cornea does not provide blood vessels to deliver nutrients and oxygen which could aid in speedy recovery.
A biomedical treatment for severe depression in which a brief electrical current is sent through the brain of an anesthetized patient is Electroconvulsive Therapy (ECT)
Electroconvulsive Therapy (ECT) is done under anesthesia in which currents which are small in magnitude are passed on through the human brain in patients with severe depression.
ECT is used when the patient does not respond to other treatments which involves Electrically stimulating the brain while patient lies in anesthesia.
This stimulation causes a seizure which helps to relieve the symptomatic causes of the depression.
It does not lead to any damage to the brain and its cells.
Thus, it helps to treat the various mental disorders prevailing in the popoulation.
ECT is considered as the last usable option when all the treatments pre given have failed to treat the patient.
Learn more about Depression here, brainly.com/question/17293944
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Answer:
a certification verifies that a professional has met a certain set of criteria for a skill or job as measured by a third-party assessment. A license is verification by a government agency that a professional is able to perform a particular occupation in a particular location, such as a certain stat
Explanation:
Answer:
Halves
Explanation:
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