Category: O

A muscle which opens and closes the eye.  

A circular muscle in the face. Either of two circular muscles of the face. The orbicularis oris, around the mouth, closes and compresses the lips. The orbicularis oculi, around each orbit, is responsible for closing the eye.  

A thermometer which is put into the mouth to take someone’s temperature.  

The administration of a simple glucose and electrolyte solution to treat acute diarrhoea, particularly in children, which has greatly reduced the number of deaths from dehydration. This is essential treatment for diarrhoea, particularly in children. There are a number of proprietary preparations, often dispensed as flavoured sachets, including Dioralyte and Rehydrat. In the developing world,…

A liquid given as a drink to correct the water, mineral and nutritional deficiencies in a person who is affected by dehydration. A solution used to prevent or correct dehydration due to diarrheal illnesses. The World Health Organization recommends that the solution contain 3.5 g sodium chloride; 2.9 g potassium chloride; 2.9 g trisodium citrate;…

Medication which is taken by swallowing.  

By swallowing.  

A nerve tract which takes the optic nerve from the optic chiasma to the optic radiation. Fibers of the optic nerve that continue beyond the optic chiasma, most of which terminate in the lateral geniculate body of the thalamus. Some continue to the superior colliculus of the midbrain; others enter the hypothalamus and terminate in…

The study of the visible light spectrum and sight. The science dealing with light and its relationship to vision. The field of science that encompasses the study of light and vision phenomena.  

A nerve tract which takes the optic impulses from the optic tract to the visual cortex. A system of fibers extending from the lateral geniculate body of the thalamus through the sublenticular portion of the internal capsule to the calcarine occipital cortex (striate area).