Category: O

Muscle that circles the eye. A circular muscle of the face originating on the frontal bone and maxilla of the medial wall of the orbit and inserted in the eyelid and skin encircling the eye. It closes the eye and is controlled by the facial nerve. Ring muscle of the eye socket; enables you to…

Muscle that closes the eyelid.  

Radiological procedure that uses orally ingested tablets of radiopaque contrast dye.  

Pharmacological agents used to decrease blood glucose levels.  

Area in the brain where parts of the right and left optic nerves cross and join the other optic nerve. The X-shaped structure formed by the two optic nerves, which pass backward from the eyeballs to meet in the midline beneath the brain, near the pituitary gland. Nerve fibers from the nasal side of the…

Muscle of the hand that pulls the thumb across the palm to enable a pinch-type grasp. A muscle of the hand originating on the trapezium and flexor retinaculum and inserted in the first metacarpal. It flexes and adducts the thumb (brings it across the palm) and is controlled by the median nerve.  

Hemorrhaging from the ovary.  

Ingrown fingernail or toenail.  

Infrequent breathing that causes less oxygen to enter the lungs. Infrequent or shallow respirations, usually less than 10 breaths per minute.    

Subjective sensation of smell experienced just prior to the onset of seizure activity.