Epinephrine is the a hormone and neurotransmiter. It is produced by the adrenal gland an is a fight-or-flight catecholamine.. So is norepinephrine. In biochemistry, the prefix nor means that norepinephrine is an analog of epinephrine. They function quite differently in the body. epinephrine is most commonly thought of in terms of t effect on the sympathetic nervous system-increasing heart rate, increasing blood pressure, hyper alertness, etc.
Call a doctor immediately if you suspect you or someone you know has a ruptured eardrum and any of the following occur: 1  An uncontrolled spinning sensation. 2  Difficulty walking. 3  An abrupt change in hearing.  A change in the ability to taste 1  foods. You accidentally put your ear under water.
Causes of a ruptured, or perforated, eardrum may include: 1  Middle ear infection (otitis media). 2  A middle ear infection often results in the accumulation of fluids in your middle ear.3  Pressure from these fluids can cause the eardrum to rupture. Foreign objects in your ear. 2  Small objects, such as a cotton swab or hairpin, can puncture or tear the eardrum. 3  Severe head trauma. 4  Severe injury, such as skull fracture, may cause the dislocation or damage to middle and inner ear structures, including your eardrum.