[custom_adv] Motorcycle racing (also called moto racing and motorbike racing) is the motorcycle sport of racing motorcycles. Major genres include motorcycle road racing and off-road racing, both either on circuits or open courses, and track racing. Other categories include hill climbs, drag racing and land speed record trials. [custom_adv] Adrenaline, also known as epinephrine, is a hormone, neurotransmitter, and medication. Adrenaline is normally produced by both the adrenal glands and certain neurons. [custom_adv] It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation response, and blood sugar level. [custom_adv] It does this by binding to alpha and beta receptors. It is found in many animals and some single cell organisms. Napoleon Cybulski first isolated adrenaline in 1895. [custom_adv] As a medication, it is used to treat a number of conditions including anaphylaxis, cardiac arrest, and superficial bleeding. Inhaled adrenaline may be used to improve the symptoms of croup. [custom_adv] It may also be used for asthma when other treatments are not effective. It is given intravenously, by injection into a muscle, by inhalation, or by injection just under the skin.[ [custom_adv] Road racing is a form of motorcycle racing held on a paved road surfaces. The races can be held either on a purpose-built closed circuit or on a street circuit utilizing temporarily closed public roads. [custom_adv] Motorcycle racing (also called moto racing and motorbike racing) is the motorcycle sport of racing motorcycles. Major genres include motorcycle road racing and off-road racing, both either on circuits or open courses, and track racing. Other categories include hill climbs, drag racing and land speed record trials. [custom_adv] As a medication, it is used to treat a number of conditions including anaphylaxis, cardiac arrest, and superficial bleeding. Inhaled adrenaline may be used to improve the symptoms of croup. [custom_adv] Motorcycle design varies greatly to suit a range of different purposes: long distance travel, commuting, cruising, sport including racing, and off-road riding.
