Card Set Information
The strength of a muscle contraction will increase as the strength of the stimulation is increased. This increase in contraction strength is due to ______ as the stimulus becomes stronger.
Additional motor units being recruited
How can ATP be regenerated within muscle cells?
Direct phosphorylation of ADP by creating phosphate
A ______ is the simplest of skeletal muscle actions. It results from only one stimulus.
______ is responsible for peristalsis
Forcing a muscle to work hard promotes increased muscle strength and endurance. This principal is called the _____.
the overload principle
The _____ is the dense regular connective tissue that surrounds a group of muscle fibers (a fasicle).
The type of muscle that is found within the walls of dermal capillaries in the skin is ______.
Each of the following is a structural characteristic of smooth muscle except _______.
Smooth muscle cells have striations
Which of the following has uninucleate cells?
This type of skeletal muscle fiber has a fast speed of contraction, primarily uses aerobic pathways to generate ATP, and may become more common after repeated endurance (aerobic) exercise
Fast oxidative fibers
A motor unit consists of
A motor neuron
All muscle fibers that are connected to a particular motor neuron
The velocity and duration of muscular contraction is influenced by ______.
The muscle fiber type
The load being placed on the muscle
The number of muscle fibers being recruited
________ occurs when a skeletal muscle loses its ability to contract during strenuous exercise.
The force of a muscle contraction can be affected by
Recruitment of motor units
Size of the muscle fibers
The frequency of stimulation
The length- tension relationship
This compound stores extra oxygen within muscle cells.
A muscle will not react until the stimulation is of a certain strength, called the ______.
What are the 4 characteristics of muscles?
What are the 3 coverings of skeletal muscles?
Each axon ending gives off several short, curling branches that collectively form ________ or end plate.
What are the 3 phases of a muscle twitch?
What occurs to a skeletal muscle when the rate of stimulation is increased?
unfused or fused tetanus during low frequency stimulation
muscle is always a little contracted?
muscle tone allows ________, stabilizes joints, and help to maintain posture.
muscles to be ready for activity
This is stored in muscles and is used as back up ATP.
The physiological inability to contract a muscle is called ________.
muscle fatigue or oxygen debt