hormonal control key terms

• endocrine system

  • the system of glands that secrete hormones
• hormone

  • a chemical secreted by a gland that travels in the blood and has an effect on a target organ. the effects are slower and longer-lasting than responses from the nervous system
• pituitary gland

  • a gland that secretes several hormones into the blood. these hormones in turn act on other glands to stimulate other hormones to be released to bring about effects
• testosterone

  • male hormone produced by testes. stimulates sperm production.
• adrenaline

  • hormone produced by adrenal glands in time of fear/stress. it increases the heart rate and boosts the delivery of oxygen and glucose to the brain and muscles, preparing the body for 'fight or flight'
• thyroxin

  • hormone produced by thyroid gland. thyroxine stimulates the metabolic rate. important in growth and development