Muscular System Flashcards
What are the muscles acting at the shoulder joint?
Trapezius - upper shoulder
Deltoid - shoulder
Latissimus dorsi - middle back
Pectoralis major - chest
Teres major - behind the shoulder
What are the muscles acting at the elbow joint?
Biceps Brachii
Triceps Brachii
What are the muscles acting at the radio-ulnar joint?
Pronator teres - back of forearm
Supinator muscle - front of forearm
What are the muscles acting at the wrist joint?
Wrist flexors
Wrist extensors
What are the muscles acting at the vertebral column joint?
Rectus abdominus - abs
Erector spinae - lower back
Internal and external obliques
What are the muscles acting at the hip joint?
Iliopsoas - pelvis
Gluteus maximus - main area of the bum
Gluteus medius - upper part of the bum
Gluteus minimus - underneath maximus and medius
Adductor longus - middle inner thigh
Adductor brevis - top inner thigh
Adductor magnus - bottom inner thigh
What are the muscles acting at the knee joint?
Quadricep:
Rectus Femoris - quad front
Vastus Medialis - inner quad
Vastus Intermedius - quad middle
Vastus Lateralis - outer quad
Hamstrings:
Biceps femoris - outer hamstring
Semimembranosus - inner hamstring
Semitendinosus - front hamstring
What are the muscles acting at the ankle?
Tibialis Anterior - shin
Gastrocnemius - calf
Soleus - back of ankle
What are the 3 types of muscles function?
Antagonist
Agonist
Fixator
What is an Agonist?
Muscles responsible for the movement
What is an Antagonist?
Muscles that relax in response to the active muscle
What is a Fixator?
Muscles that help to stabilise the joint
What are the 3 types of muscle contraction?
Isometric
Concentric
Eccentric
What is an isometric contraction?
Contractions that happen when a movement is stationary
e.g. handstand
What is a concentric contraction?
When muscles shorten under tension
e.g. bicep curl