Muscle system

• there are 3 types of muscles : cardiac, skeletal, smooth
• cardiac muscle is involuntary
• skeletal muscle is voluntary
• smooth muscle is involuntary
• the function of the deltoi is abduction at the shoulder
• the fucntion of the bicep is flexion at the elbow
• the function of the tricep is extension at the elbow
• the function of the pectoral is horizontal adduction at the shoulder
• supinator is palms facing up
• pronation is palms facing down
• the function of abdonimals is flexion and rotaion of the lumbar vertebrae
• the function of the obliques is lateralflexion of the waist
• the function of the quadricep is extension at the knee
• the function of the hamstring is flexion at the knee
• the function of the hip flexors is flexion at the hip
• the function of the gluteals is extension/ hypertension at the hip
• the function of the tibialis anterior is dorsiflexion at the ankle
• the function of the gastrocnemius is plantaflexion at the ankle
• the function of the soleus is plantaflexion at the ankle
• the function of the erecto spinae is extension of the spine
• the function of the trapezium is that it elevates and depresses it the scapula
• the function of the latissimus dorsi is adduction at the shoulder
• antagonist muscles that relaxes
• agonist muscles that contracts
• at the elbow a pair is tricep and bicep
• at the knee a pair is quadricep and hamstrings
• a synergist is muscles that enable the agonist to operate effictively . They work together to control and direct movement
• a fixator is a muslce that stop any unwanted movement and they stabilise the origin
• isometric contraction make the muscles length not change at the angle at the joint remaining the same
• isotonic contraction has concentric and eccentric
• isotonic concentric is the upward, positive phase and muscles will get shorter
• isotonic eccentric is the downward, negative phase and would make the muscles longer
• there are 3 types of fibre and they are : type 1 slow twitch , type 2a fast twitch , type 2b super fast twitch