Bone and Muscular Terms Flashcards
Connects to Skeleton via tendons
Activated via Nerves
CAN be fatigued
Skeletal Muscle
Organs and blood vessels
Contractions are uniform
Fatigue resistant
Smooth Muscle
Provides contractile activity of the heart
Can be gradated
Very fatigue resistant
Cardiac Muscle
Smallest contractile unit of a muscle
Sacromere
Bundles muscle fibers
Perimycium
Contractile Machinery (2 answers)
Actin and Myosin
Supplies nutrients and removes waste from muscles
Capillaries
Prime mover of the muscle
Agonist
Muscle opposing Agonist action
Antagonist
Muscle surrounding a joint being moved
Synergist
Myosin filaments attach themselves to actin filaments
Crossbridge formation
Site of attachment for muscle that doesn’t move
Origin
Site of attachment for muscle that DOES move
Insurition
Muscle type for low level energy actions
Slow twitch (Type 1)
Muscle fiber that results in higher force and speed
Fast Twitch (Type 2 and Type 2x)
Binds to O2 in muscle
Myoglobin
Collects info to tell brain
Sensory nerves
Brain tells muscle to move
Motor nerves
Group of muscles activated by 1 nerve
Motor Unit
Being able to fire all muscle fibers
Intra-muscle Connection
Multiple muscles firing to complete an action
Inter-muscle Connection
Still position of muscle
Static movement
Moving action of muscle
Dynamic movement
Same or constant tension
Isotonic