Muscle Contraction
• Tension (contraction) is produced internally within the sarcomeres as a
result of cross-bridge activity and the resulting sliding of filaments.
• The tension generated by these contractile elements must be transmitted to
the bone via a tendon before the bone can be moved.
• Not all muscle contraction shorten muscles and move bones.
How muscle contraction is a coordinated?
• We were focusing on the contraction in a single muscle fiber. Now we will
try to focus on the whole muscle
Muscle Tone
• The state of continuous partial contractions of skeletal muscle
• Some fibers are contracted even in a relaxed muscle
• Different fibers contract at different times to provide muscle tone
• The process of stimulating various fibers is under involuntary control
• Tension (contraction) is produced internally within the sarcomeres as a
result of cross-bridge activity and the resulting sliding of filaments.
• The tension generated by these contractile elements must be transmitted to
the bone via a tendon before the bone can be moved.
• Not all muscle contraction shorten muscles and move bones.
How muscle contraction is a coordinated?
• We were focusing on the contraction in a single muscle fiber. Now we will
try to focus on the whole muscle
Muscle Tone
• The state of continuous partial contractions of skeletal muscle
• Some fibers are contracted even in a relaxed muscle
• Different fibers contract at different times to provide muscle tone
• The process of stimulating various fibers is under involuntary control
