Muscular system 1
Thin filaments are made of protein molecules called___
actin
Thick filaments are made up of_____-
myosin
The energy required for muscle contraction is obtained from_________
ATP
Production of energy with oxygen is called__________.
aerobic respiration
Muscles only______,they don't push.
pull
Wrapped in perimysium
Fascicles
Muscle cells are long fibers that run parralel to each other and are held together by?
Endomysium
Skeletal muscle is covered by a fourth tough layer of connective tissue called the________
Deep fascia
Muscles that work with prime movers by providing the opposing action is the _____________.
Antagonist
What muscle is named for its triangular shape?
Deltoid
Which muscle cells have more than one nucleus, are striated and are controlled voluntarily?
Skeletal
Cheek compression is possible by use of what muscle?
Buccinator
What is the strong muscle of mastication that lifts the mandible?
Muscle fatigue
Which muscle is primarily being used when the foot is dorsiflexed or inverted?
Tibialis Anterior
Muscles of______ _____________ have at least one of their attachment points in the deep layers of the skin.
facial expression
What are 3 general functions of the muscular system
Movement
Heat Production
Posture
Autoimmune disease characterized by muscle weakness in face & throat
Myasthenia gravis
Infection may cause over-activity of the nervous system which leads to painful muscle spasms, such as "lockjaw"?
clostridium tetani