Located of the brainstem; controls breathing and heartbeat; connects the medulla to the two sides of the cerebellum to help coordinate and integrate movement on each side of side of the body; involved in sleep and dreaming.
Serious symptoms related to the bite of a brown recluse spider include low platelet count, destruction of the red blood cells, blot clots in capillaries, inability to form clots, acute renal failure or kidney damage, coma, and death.
When the brown recluse bites, it is often painless -- then skin may redden, turn white, blister, and becomes painful. Sometimes an ulcer forms. These bites can be deadly in extremely rare cases. Get medical care if you have been bitten by a spider.