Mr. Adams' Washburn Site
  • Home
  • About

Topic 11.2:  Movement

Understandings:
  • Bones and exoskeletons provide anchorage for muscles and act as levers.
  • Movement of the body requires muscles to work in antagonistic pairs.
  • Synovial joints allow certain movements but not others.
  • Skeletal muscles fibres are multinucleated and contain specialized endoplasmic reticulum.
  • Muscle fibres contain many myofibrils.
  • Each myofibrils is made up of contractile sarcomeres.
  • The contraction of the skeletal muscle is achieved by the sliding of actin and myosin filaments.
  • Calcium ions and the proteins tropomyosin and troponin control muscle contractions. 
  • ATP hydrolysis and cross bridge formation are necessary for the filaments to slide.
Applications:
  • Antagonistic pairs of muscles in an insect leg.
Skills:
  • Annotations of a diagram of the human elbow.
  • Drawing labelled diagrams of the structure of a sarcomere.
  • Analysis of electron micrographs to find the state of concentration of muscle fibres.
Nature of Science:
  • Developments in scientific research follow improvements in apparatus-fluorescent calcium ions have been used to study the cyclic interactions in muscle contraction.
Powerpoints
11.2_movement.pptx
File Size: 7083 kb
File Type: pptx
Download File

Muscle Drawing
Homeworks
Helpful Links & Articles
Muscle video from class
Virtual Muscles
Powered by Create your own unique website with customizable templates.
  • Home
  • About