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Insertion
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What term identifies the site where a muscle attaches to the bone it pulls on?
The term that identifies the site where a muscle attaches to the bone it pulls on is called the "insertion." This is typically the more movable attachment of the muscle, as opposed to the origin which is the less movable attachment site.
The mechanism of contraction in smooth muscle is different from skeletal muscle in that?
The site of calcium regulation differs
An attachment site for a muscle that closes the anal opening is the primary purpose of?
coccyx
What is an attachment site for the temporalis?
The attachment site for the temporalis muscle is the coronoid process of the mandible. This muscle originates from the temporal fossa of the skull and inserts at the coronoid process, allowing it to participate in actions like elevating and retracting the mandible during activities such as chewing and speaking.
What is the function of troponin?
Troponin is attached to the protein tropomyosin and lies within the groove between actin filaments in muscle tissue. In a relaxed muscle, tropomyosin blocks the attachment site for the myosin crossbridge, thus preventing contraction. When the muscle cell is stimulated to contract by an action potential, calcium channels open in the sarcoplasmic reticulum and release calcium into the sarcoplasm. Some of this calcium attaches to troponin, causing a conformational change that moves tropomyosin out of the way so that the cross bridges can attach to actin and produce muscle contraction.
Which molecule has a binding site for myosin heads?
The molecule that has a binding site for myosin heads is actin. Actin filaments form the contractile apparatus in muscle fibers, and myosin heads bind to specific sites on the actin filaments during muscle contraction. This interaction is crucial for the sliding filament model of muscle contraction, where the myosin heads pull on the actin filaments to generate force.
What is the association site of nerve and muscle called?
The association site of a nerve and a muscle is called a neuromuscular junction. At this specialized synapse, motor neurons release neurotransmitters, such as acetylcholine, which bind to receptors on the muscle fiber's membrane, leading to muscle contraction. This junction is crucial for the communication between the nervous system and muscle tissue, enabling voluntary movement.
An attachment site for a muscle that closes the anal opening is the primary purpose of the?
OMG do you have ms Phillips too? I totally don't know btw :(
The active site involved in cross-bridge formation?
The active site involved in cross-bridge formation is located on the myosin protein of thick filaments in muscle fibers. This site binds to specific sites on the actin filaments of thin filaments, facilitating the interaction necessary for muscle contraction. The binding of myosin to actin is regulated by the presence of calcium ions and ATP, which enable the myosin heads to attach, pivot, and pull the actin filaments, resulting in muscle shortening. This process is a key component of the sliding filament theory of muscle contraction.
Sliding filament model which proteinS have a calcium binding site?
In the sliding filament model of muscle contraction, the protein troponin has a calcium binding site on the troponin C subunit. When calcium binds to troponin C, it triggers a conformational change in the troponin-tropomyosin complex, allowing myosin heads to interact with actin and initiate muscle contraction.
Which structure is the site of attachment for tendons?
Bones are the primary site of attachment for tendons. Tendons are tough, fibrous connective tissues that connect muscle to bone, helping to facilitate movement and transmit forces. They attach to the periosteum, a dense connective tissue layer that covers bones.
What attaches tp the radical tuberosity?
The radical tuberosity is primarily an attachment site for the biceps brachii muscle via the bicipital aponeurosis. This prominence on the radius serves as a key point for the muscle's tendon, enabling flexion of the forearm at the elbow joint and supination of the forearm. Additionally, the brachialis muscle has a partial attachment nearby, contributing to elbow flexion as well.
