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What is the role of genetics in determining the proportions of muscle fiber types?
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What is the plasma membrane of the muscle fiber?
The plasma membrane of a muscle fiber is called the sarcolemma. It surrounds the muscle cell and is responsible for controlling the passage of substances in and out of the cell, as well as transmitting signals for muscle contraction. The sarcolemma is essential for maintaining the integrity and function of the muscle fiber.
What is sacrolemma?
The sarcolemma is the cell membrane of a muscle fiber. It surrounds and protects the muscle fiber and controls the movement of substances into and out of the cell. The sarcolemma plays a crucial role in muscle contraction and the transmission of nerve impulses to the muscle fiber.
The motor neuron and the muscle fiber it controls constitute a what?
The motor neuron and the muscle fiber it controls constitute a motor unit. This functional unit is essential to the process of muscle contraction and movement in the body. When the motor neuron sends signals to the muscle fiber, it results in the activation and coordination of muscle fibers to produce movement.
What are the structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction?
The structures within the muscle fiber that shorten to cause skeletal muscle contraction are called myofibrils. Myofibrils are composed of repeating units called sarcomeres, which contain thick and thin filaments made of proteins (actin and myosin). When the muscle fiber is stimulated by a nerve impulse, the myosin heads interact with the actin filaments to generate the force required for muscle contraction.
The narrow space between the synaptic terminal and the muscle fiber is the?
synaptic cleft, where neurotransmitters are released by the synaptic terminal and bind to receptors on the muscle fiber to trigger a muscle contraction.
What are two factors affecting the thickness of muscles fiber?
Two factors affecting muscle fiber thickness are genetics and the type of training or exercise performed. Genetics play a role in determining the natural thickness of muscle fibers, while specific training regimens that target muscle hypertrophy can increase muscle fiber thickness over time.
What are all muscle cells called?
A single muscle cell is called a muscle fiber.
Determining fiber length?
3
Each muscle fiber is also called a?
Each muscle fiber is also called a myofiber.
What is the Smaller fiber in a muscle fiber?
Myofibril
Exercise can do what?
make more muscle fiber
What is the term for a Smaller fiber in a muscle fiber?
The smaller fiber in a muscle fiber is called a myofibril. A band of tissue that connects bone to bone is called a ligament.
What is a single muscle called?
a muscle fiber
What is the basic unit of muscle?
muscle fiber
What is the part of the muscle fiber that allows the fiber to contract?
The sacromere with the proteins actin and myosin allow the muscle cell (fiber) to contract.
Which would you see only in the relaxed electron micrographs of a relaxed skeletal and muscle fiber and a fully contracted muscle fiber?
This question is confusing. Are you asking if you see only a relaxed muscle fiber in EMs? Yes, you would only see that, not a contracted muscle fiber. The preparation could only be of a relaxed fiber.
What is the difference between a whole muscle and muscle fiber?
A whole muscle is the whole muscle while a muscle fiber is part of a muscle. I'm not sure if I'm correct though, so check with some different sources.
