Function and characteristics
The ability of a cell to receive and respond to stimulus by changing its membrane potential.
Excitability
The region of a myofibril between two Z discs
Sarcomere
The naming used for a muscle that is shaped like a trapezoid
trapezius
Extension of the arm at the elbow
Triceps Brachii
The name for a muscle that has the major responsibility for producing a specific movement
Agonst, or prime mover
The ability to extend of stretch.
Extensibility
What the thin filaments of myosin are mainly composed of.
Actin
The term used for the largest muscle in that particular area
Maximus
Flexion of the arm at the elbow
Biceps Brachii
Muscles that oppose a particular movement
anatagonist
The ability of a muscle cell to recoil and resume its resting length after stretching
elasticity
The smooth endoplasmic reticulum of muscle cells
Sarcoplasmic reticulum
Term used for when muscle fibers run parallel to the axis of the body or limb
Rectus
Extension of the leg at the knee
Quadriceps
An accessory muscle to the prime mover
synergists
The ability to shorten forcible when adequately stimulated.
Contractability
At each A band to I band junction, the sarcolemma of the muscle cell protrudes deep into the cell interior, forming the ________
T Tubule
When a muscle has three heads, or points of attachment you would assume it has ____ in the name
Responsible for abduction, flexion, and extension of the arm, as well as giving shoulder stability
Deltoid
A muscle that crosses on the posterior side of a joint produces
extension
The function that allows skeletal muscles to manipulate your body in any way you need
Producing movement
When the muscle fiber shortens, what happens to the Z discs?
The distance between them shortens, and they are pulled toward the M line
Muscle action for the movement that moves a limb AWAY from the body
Abduction
Allow the trunk to twist, but to the opposite side of whichever is contracting
External Oblique muscles
A muscle that crosses on the medial side of a joint produces
adduction