Medicine Word Today

Syndrome, third and fourth pharyngeal pouch: See: DiGeorge syndrome.

Fourth cranial nerve: The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear nerve results in rotation of the eyeball upward...

Fourth stage of labor: The hour or two after delivery when the tone of the uterus is established and the uterus contracts down again expelling any remaining contents. These contractions are hastened by breast-feeding, which stimulates production...

Cranial nerve, fourth: The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear nerve results in rotation of the eyeball upward and o...

Nerve, fourth cranial: The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear nerve results in rotation of the eyeball upwa...

Ventricle, fourth: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventr...

Fourth disease: A disorder characterized by a rash due to a toxin produced by Staphylococcus aureus (Staph aureus bacteria). Measles and scarlet fever were differentiated from one another in the 17th century. Rubella was accepted as the third distinc...

Third and fourth pharyngeal pouch syndrome: See: DiGeorge syndrome.

Fourth ventricle: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventri...