2.2 biology

Cards (26)

  • Nervous system
    The Central Nervous System (CNS) and the nerves
  • Central nervous system (CNS)

    The brain and the spinal cord
  • Cerebrum
    Part of the brain responsible for conscious thought, memory and personality
  • Cerebellum
    The part of the brain responsible for balance and coordination
  • Medulla
    The part of the brain responsible for controlling heart rate and breathing rate
  • Sensory neuron
    Carries impulses signal from sense organ to the inter neuron (spinal cord)
  • Inter neuron
    Carries impulses from sensory to the motor neuron within CNS
  • Motor neuron
    Carries impulses from the inter neuron to the muscle or organ
  • Electrical impulses
    How messages are passed along neurons
  • Chemicals
    How messages are passed through a synapse
  • Synapse
    The gap between two neurons
  • Receptor protein
    The proteins that detect an external stimulus
  • Stimulus
    An external factor that can cause a response in the body (e.g. light, taste, sound, etc.)
  • Effectors
    Carries out the response to a stimulus (e.g. muscle or gland)
  • Reflex arc
    Rapid, automatic and protective response to protect the body from harm
  • Endocrine gland
    Gland that produces hormones
  • Hormones
    Chemical messengers that travel in the blood
  • Target tissue
    Target tissue that has cells with complementary receptor proteins, so only that tissue will be affected by those hormones
  • Receptors
    Protein found on target cells of hormones. They are complementary to hormones
  • Liver
    Target tissue of insulin and glucagon. It stores excess glucose as glycogen
  • Pancreas
    Organ that detects changes in blood glucose levels. It produces insulin and glucagon
  • Insulin
    Hormone that is made when blood glucose increases. It lowers blood glucose by promoting the liver to convert glucose into glycogen
  • Glucagon
    Hormone that is made when blood glucose decreases. It raises blood glucose by promoting the liver to convert glycogen back into glucose
  • Glycogen
    Storage carbohydrate found in the liver
  • Blood
    How hormones travel in the body
  • when is insulin produced
    when blood glucose levels increase