Muscle Part 2 DTH24.pdf

Muscle Part 2 – Muscle Groups Julie Watson Muscle Groups There are three main muscle groups: Striated or Skeletal Non Striated or Smooth or Visceral Cardiac 2 Muscle Groups Loading… 3 Striated/Skeletal Muscle...

Muscle Part 2 – Muscle Groups Julie Watson Muscle Groups There are three main muscle groups: Striated or Skeletal Non Striated or Smooth or Visceral Cardiac 2 Muscle Groups Loading… 3 Striated/Skeletal Muscle Contracts to move limbs Each skeletal muscle fibre is Maintains posture roughly cylindrical in shape Both ends of muscle articulate the Fibre arrangement depends on the skeleton function of the muscle Attached to the bones by tendons Each muscle fibre has a long cylindrical shape measuring Has blood vessels and nerves between 0.02 to 0.08 mm in associated with it diameter Under voluntary control They vary in length between 40mm to 35cm Skeletal Muscle Loading… 5 Skeletal Muscle 6 Non Striated/Smooth/Visceral Muscle Found where movement of soft Only relaxes for short periods of tissues structures is required e.g. time Walls of blood and lymphatic Contraction of smooth muscle can vessels be sustained for long periods if Alimentary canal required Cells are spindle shaped The cells are long and narrow and spindle shaped with one centrally Under the autonomic nervous place nucleus system They are 0.005mm to 0.01mm in diameter and 0.03mm to 0.2mm long Smooth Muscle 8 Smooth Muscle 9 Cardiac Muscle Only found in the wall of the heart Each fibre is roughly rectangular Exhibits rhythmic contractions in shape Under the autonomic nervous Has an intrinsic pacemaker system system Has intercalated discs Cardiac Muscle Loading… 11 Cardiac Muscle 12 Comparison of Muscle Types 13 Comparisons Microscopically 14 Further Reading https://www.verywellhealth.com/atp-6374347 https://www.youtube.com/watch?v=loXOdSmP1tA https://www.youtube.com/watch?v=Ktv-CaOt6UQ https://www.youtube.com/watch?v=I80Xx7pA9hQ 15  https://www.bbc.co.uk/bitesize/guides/zxkr82p/revision/1 https://www.youtube.com/watch?v=MZJ6kTKDFmw Youtube.com/watch?v=yzmCUHcYqNE Muscle Tissues Chapter 9 by Dr Michael Sliman Thank You For Your Attention 17