Biology › Nervous coordination, receptors, muscles and behaviour

Nervous coordination, receptors, muscles and behaviour

Unit B14 · 4 lessons published so far.

• Receptors: turning a stimulus into something a neurone can carry
  The sequence from stimulus to response, the spinal reflex arc and the three neurones in it, receptors as transducers, the Pacinian corpuscle and its…
• The action potential: the same size, however hard you push
  The resting potential and how the sodium-potassium pump and differential permeability establish it, depolarisation, repolarisation and…
• The synapse: transmission, and why it runs one way
  The structure of a cholinergic synapse, the sequence from arriving impulse through calcium influx, vesicle fusion, diffusion and receptor binding to…
• Sliding filaments: shortening a muscle without shortening anything
  Skeletal muscle structure from muscle to myofibril to sarcomere, the sliding filament mechanism with the roles of calcium, tropomyosin, ATP and the…