Muscle names Flashcards
What are Parallel muscle arrangement
Fibres arranged vertically - smaller CSA, greater shortening
What are Pennate muscle arrangement
Fibres arranged obliquely - Greater CSA, lesser shortening
Concentric
Tension is greater than the load, muscle shortens, change in joint position and angle decreases
Eccentric
Tension is lesser than load, Muscle elongates, change in joint position
Isometric
Tension does not outweigh load, No change in joint position
Agonist
Acts concentrically to create movement
Antagonist
Acts eccentrically to oppose and control the movement
Stabilisers
Prevents movement of joint
Neutralisers
Eliminates an unwanted movement caused by another muscle
Biceps brachii movement
Shoulder = flexion
Elbow = Flexion
Radioulna joints = supination
Origin and insertion of Biceps brachii
Origin = Scapula
Insertion = Radial tuberosity
Triceps brachii movement
Shoulder = extension
elbow = extension
Origin and insertion Triceps brachii
Origin = scapula and humerus
Insertion = Olecranon process of ulna
Movement of deltoid
Should = flexion, abduction, extension
Origin and Insertion of deltoid
Origin = Scapula and clavicle
Insertion = Deltoid tuberosity
Iliopsoas movement
Hip = Flexion
Iliopsoas origin and insertion
Origin = iliac fossa and lumbar vertebrae
Insertion = femur
Gluteus maximus movement
Hip = extension
Gluteus maximus origin and insertion
Origin = illium and sacrum
Insertion = Femur
Quadriceps femoris movement
Hip = Flexion (rectus femoris only)
Knee = extension
Quadriceps femoris origin and insertion
Origin = Rectus femoris - illium, vastus medialis, intermedius and lateralis = femur
Insertion = tibial tuberosity
Hamstring movement
hip = extension
Knee = Flexion + rotation
Tibialis anterior Movement
Ankle = dorsiflexion
Tibialis anterior origin and insertion
origin = tibia
Insertion = tarsals
