The Muscular System Flashcards
Tendons
connect muscle to bone; provide anchor for muscles to produce force.
Fascia
outer layer of connective tissue surrounding a muscle
Fascicles
bundle of individual muscle fibers
Muscle Fiber
cellular components & myofibrils encased in a plasma membrane
Sarcomere
produces muscular contraction; repeating sections of actin & myosin
Sliding Fillament Theory
thick & thin filaments slide past one another shortening the entire sarcomere
Type 1 Muscle Tissue (slow twitch)
smaller size; slower to produce tension; fatigue slowly
Type 2 Muscle Tissue (fast twitch)
larger size; quick to produce tension; fatigue quickly
Motor Unit
one motor neuron and the muscle fibers it connects with
Neural Activation
contraction of a muscle generated by neural stimulation
Neurotransmitters
chemical messengers that transport impulses from nerve to muscle
Local Stabilization System
Attach directly to vertebrae;
Consists of: transverse abdominis, internal oblique, multifidus, pelvic floor, diaphragm.
Movement System
attach spine and/or pelvis to extremities;
Consists of:
latissimusdorsi, hip flexors, hamstring complex, quadriceps
Global Stabilization System
Attach from pelvis to spine;
Consists of: quadratus lumborum, posts major, external obliques, rectus abdominus, gluteus medius, adductor complex
