human biology

myology

cardiac muscle

branched muscles that are Uni-nucleated with involuntary control found in/around the heart

smooth muscle

spindle muscles that are Uni-nucleated with involuntary control found on the wall of small intestines

skeletal muscle

elongated muscles that are multi-nucleated with voluntary control found attached to bones

tendons

muscle to bone

ligement

bone to bone

extensor

a muscle that move two body parts away from each other

flexor

a muscle that moves two body parts closer together

antagonistic muscles

muscles that work aganist each other to create moverment

agonist

the muscle that contracts to create the desired movement

antagonist

the muscle that relaxes and opposes the action of the agonist

synergisitc muscles

muscles that assiat the agonist

origin

attachment of a muscle tendon to a stationary bone

insertion:

attachment if a muscle tendon to a moneable bone

partial contraction:

tightness the muscle but not enough to create movement many different fibers take turn to contract

structure of a skeletal muscle

1. muscles

2. muscle bundle

3. muscle fibres

4. myofibrils

5. myofilaments

6. sarcomeres

what does muscles have

N.A

what do muscle bundles have

1. epimysium

2. endomysium

3. fascicles

4. perimysium

what do muscle fibres have

1. sarcolemma (plasma membrane)

2. saecoplasm (cytoplasm for muscle cells)

what do myofibrils have

1. thin filaments

2. thick filaments

what do myofilaments have

1. actin

2. myosin

what do sarcomeres have

1. Z band

2. A line

3. I line

4. H zone