Muscle Part 2 DTH24 GN.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 Quickt forceful + may fatig...

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 Quickt forceful + may fatigue 40 % of total body weight Striated/Skeletal Muscle Locomotion facial expressions other body. 8 ⑭ respond to hormones from endocrine movements gland 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 some elastic provided by Attached to the bones by tendons allogen proteins Each muscle fibre has a long existine cylindrical shape measuring Has blood vessels and nerves between 0.02 to 0.08 mm in associated with it blood to f from muscles diameter supplying oxyge + Under voluntary control (a2 They vary in length between / remove + sensory Central Stretch receptors Waste 40mm to 35cm nervous monitor state system to CNS. outer membrane-sarcolema-large number myofibrils Some fibres fun entire length or diagonally Skeletal Muscle Loading… 5 Skeletal Muscle 6  chemical energy. Shortens 30 300 times less times slower Non Striated/Smooth/Visceral Muscle than stricted still muscle uniform appearance. generates force but doesn't fatigue us easing 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 all by itself The cells are long and narrow and. - spindle shaped with one centrally Under the autonomic nervous hormonest alter place nucleus system-sheaths Some chemicals visceral-organs rate and perce of They are 0.005mm to 0.01mm in contraction diameter and 0.03mm to 0.2mm multi theaters unit - blood vessels , long  fibres held together by give layers of Connective tissue. structured. of Smooth Muscle arranged in sheaths to form wall Blood + Lympathic vessels respiratory urinery ducts + gland. less activ + myosin 8 Smooth Muscle 9  I central nucleus Cardiac Muscle musal mosty 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 can be affected by nerve impulsed Has intercalated discs hormones + chemicals the contraction. contractility-basis of pumping action + rhymacy of Cardiac Muscle Loading… 11 Cardiac Muscle joins-wave of interaction allows heart to contract 12 in arhythmic manor.  Revise!! 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