What is the term for the attachment site of a muscle that does not move when the muscle contracts?
Show Understanding: • Calcium ions and the proteins tropomyosin and troponin control muscle contractions
1. Depolarisation and Calcium Ion Release
Muscle Innervation 2. Actin and Myosin Cross-Bridge
Formation
The Role of Calcium in Cross-Bridge Formation Understanding: • The contraction of the skeletal muscle is achieved by the sliding of actin and myosin filaments • ATP hydrolysis and cross bridge formation are necessary for the
filaments to slide
Sliding Filaments Mechanism 4. Sarcomere Shortening
Diagrams of Sarcomere Shortening Summary of Muscle Contractions
Muscle Contraction Summary
What is the name for the attachment site of a muscle that moves during muscular contraction?A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin. If the place is on the bone that moves during the action, the attachment is called an insertion.
What do you call the attachment site for muscles?A tendon is a fibrous connective tissue that attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball.
What is it called when a muscle remains in a contracted state?A tetanic contraction (also called tetanized state, tetanus, or physiologic tetanus, the latter to differentiate from the disease called tetanus) is a sustained muscle contraction evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate.
Which part of the muscle moves the least during the contraction?Ch. 7 Muscular System Vocabulary Terms (14-15). |