Endocrine system

• What is the hypothalamus?


  It is connected to the pituitary gland
• what is the role of the hypothalamu?

  regulates the pituitary gland
• what is the role of the pituitary gland?


  control and stimulate other glands to release hormones
• what two parts is the pituitary gland split into?


  anterior, posterior
• what does the anterior release?


  ACTH and cortiol
• what doe porterior lobe release?

  oxytocin
• what is the role of pineal gland?


  secretes melatonin
• what is the role of thyroid gland?


  secretes thyroxine
• what is the responsibility of thyroxine?


  regulating metabolism/metabolic processes
• what is the role of adrenal gland?


  adrenaline
• what is the adrenal glad split into?

  adrenal medulla, adrenal cortex
• what does adrenal medulla release?


  releases adrenaline, noradrenaline
• what does the adrenal cortex release?


  cortiol which stimulates the release of glucose whilst supressing the immune system
• what does the adrenal cortex release?


  cortiol which stimulates the release of glucose whilst supressing the immune system
• what is the role of the testes?


  releass androgen which includes testosterone
• what is the responsibilty of the testes?


  for development of the male sex characteristics during puberty and muscle growth
• what is the responsibilty of the testes?


  for development of the male sex characteristics during puberty and muscle growthfor development of the male sex characteristics during puberty and muscle growth
• what is the role of the ovaries?


  releases oestrogen
• what does ovaries control?


  regulation of female reproductive system including the menstrual cycle and pregnancy
• the endocrine system helps to regulate the activity of cells and organs in the body
• the endocrine system communicates chemical messages to the organs of the body
• what are sensory neurones?


  found in the receptor cells and carry nerve impulses to the CS
• where are the sensory neurones located?

  PNS
• where are relay neurones found?


  between sensory neurone and motor neurone
• what are the purpose of relay neurones?


  for sensory and motor neurones to communicate
• relay neurones make up 92% of neurones
• where are motor neurones found?

  the CNS
• what are motor neurones?


  when stimulated they release neurotransmitters that bind to muscle receptors on muscles to trigger a response
• what are dendrites?


  receive signals from other neurones and are connected to cell body in relay and motor neurones
• what is an axon?


  long slender fibre that carries nerve impulses, this is in the form of action potentials
• what is the myeline sheath?


  surrounds the axon, insulates it by speeding up the transmission of action potential
• What is the axon terminal


  Connects neurones to other neurones, using synaptic transmission