1.2 muscular system

ability to shorten

ability to strengthen/ lengthen

ability to strengthen and return to the original size

increase in size of tissue muscle

wastage/ decrease in size of muscle tissue usually because of disease, injury or age

the ability to receive and respond to stimuli via the generation of an electric pulse, this causes contraction of muscle and is controlled by nerve stimuli

location: the walls of (hollow) organs involuntary structure: narrow, tapered (smaller at the ends) and spindle (oval) shaped. non striated (doesn’t have long streaks) and has one nucleus

location: only heart involuntary structure: striated (has parallel streaks), tubular, branching at the ends and has one nucleus

location: attached to bone voluntary structure: striated (has parallel streaking lines), tubular and multiple nuclei purpose: contracts to allow bone to move

closest end to the limb, usually the proximal tendon on the bone and its a fixed location

furthest end from the limb is usually the distal tendon on the bone and its moving

origin: clavicle and sternum insertion: humerus

origin: clavicle and scapula insertion: humerus

origin: scapula insertion: radius and ulna

origin: pelvis insertion: ribs and sternum

origin: ribs insertion: pelvis

origin: vertebrae insertion: femur

origin: pelvis insertion: tibia

origin: pelvis and femur insertion: patella and tibia

origin: tibia insertion: tarsals

origin: vertebrae and skull insertion: clavicle and scapula

origin: humerus and scapula insertion: ulna

origin: vertebrae, sacrum and pelvis insertion: humerus

origin: vertebrae, ribs and pelvis insertion: ribs and vertebrae