A motor unit from a skeletal muscle contains 1500 muscle fibers. Would this muscle be involved in fine, delicate movements or in powerful, gross movements? Explain.

Q: What is the gross anatomical arrangement of a skeletal muscle?

A: An entire skeletal muscle is viewed as an organ of the solid framework. Every organ or muscle…

Q: What prevents cross-bridges from attaching to sites on the thinfilaments in a resting skeletal…

A: Muscles are the tissues able to contract in response to stimuli.

Q: Compare the composition of flight muscles with a powerful locomotive muscle in terms of…

A: Flight muscles are a type of muscle which is found in birds or insects. This muscle helps birds or…

Q: 3) List and define the organizational structure of skeletal muscle beginning with the sacrcomere up…

A: Skeletal muscles make up the most part of our muscles. They account for around 30 to 40 percent of…

Q: Explain the molecular mechanism of muscle contraction.

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Without ATP, relaxed muscle cannot contract and a contracted muscle cannot relax. Explain why.

A: The actin and myosin filaments are linked with several types of cell movements. The myosin converts…

Q: Name three differences between slow-twitch and fast-twitch muscle fibers.

A: A sudden and quick movement of muscles or rather, contraction of muscles is referred to as Twitch.…

Q: As skeletal muscle contracts, one or more bands of the sarcomere become narrower and disappear, and…

A: When the myosin binds to the actin filaments, it forms the cross-bridge that causes a shortening of…

Q: Name the types of muscle contraction and briefly explain each.

A: The muscular system comprises of skeletal muscles, smooth muscles and tendons. This system plays an…

Q: Using what you know about the functional units of muscle, describe the structure of a muscle fiber.…

A: The muscle important function is Contractibility. Muscles, attached to bones or inner organs and…

Q: During a single muscle twitch, the sarcomeres within a muscle contract maximally. How can you…

A: A contraction of muscle fibers generate when an action potential pass down the motor neurons. A…

Q: What must occur for a muscle to relax?

A: Actin (spherical) and myosin (motor) are the major proteins in the muscles. Actin monomers aggregate…

Q: Describe the muscle composition in a normal active person. How does this compare to athletes…

A: Muscle composition in a typical active person varies based on factors such as genetics, training,…

Q: Describe the unique features of muscle fibers that allow them to contract.

A: The unique features of muscle fibers that allow them to contract are primarily due to their…

Q: At the level of the sarcomere, explain the sliding filament model for how muscle contracts

A: Muscle contraction and relaxation is one of the main reasons that aid the movement or locomotion of…

Q: Explain with diagram Transverse tubules and sarcoplasmic reticulum in a single skeletal muscle…

A: A muscle is an animal tissue and composed of muscle cells. These cells consist of protein filament…

Q: Describe the microscopic structure of a muscle fiber

A: Each muscle is made out of various muscle fibers. Each muscle fiber is made out of multinucleated,…

Q: How can I describe skeletal muscle contraction using the words "upper motor neuron" and "lower motor…

A: Skeletal muscles represent one of the three types of muscles including smooth muscle and cardiac…

Q: Explain why skeletal muscle fibers appear striated.

A: The muscular system comprises three major types of muscle cells - smooth muscle, cardiac muscle, and…

Q: describe the microscopic physiological action of a muscle contraction

A: Skeletal muscle contraction is voluntary but smooth muscle and cardiac muscle contraction is not in…

Q: What band in skeletal muscle gets narrower during a contraction?

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: Explain how a muscle shortens when it contracts.

A: Muscle contraction refers to the stimulation of the tension-producing locations inside the muscle…

Q: What conditions will produce the maximum tension in a skeletal muscle fiber?

A: Muscles are required in breathing, talking, running, walking, and any body movements. Actin and…

Q: Describe three types of skeletal muscle fibers and explain the relative value of each type.

A: The skeletal muscle fibers are classified based on two conditions, that is, how fast these fibers…

Q: Myosin filaments iterdigitate with actin filaments in order to bring about muscle contraction.…

A: The process of muscle contraction is necessary for the normal physical activities of the body. Force…

Q: Briefly discuss the abundance of sarcoplasmic reticulum in skeletal muscle in relation to its…

A: The sarcoplasmic reticulum is the major intracellular organelle for controlling the cytosolic…

Q: Describe how muscle contraction can resist movement rather than cause movement

A: Muscle contractions allow movements mainly the most common function of muscles. The contractions of…

Q: Why are calcium ions so important for the muscle contraction process

A: Muscle contraction is a process carried out by the interaction of the actin and myosin proteins. It…

Q: Explain Why is muscle that has sustained significant damage unable to produce the same amount of…

A: Muscle cells are cells that contract to help in movement. Voluntary movement is controlled by…

Q: Describe the length-tension relationship in skeletal muscle fibers.

A: The skeleton muscle varies in shape, size, and arrangement of fibers. These range from small strands…

Q: Describe the gross structure of a skeletal muscle.

A: The muscles with alternate light and dark bands which remain associated with the skeleton and can…

Q: Give the diagram of a sarcomere of skeletal muscle showing different regions?

A: Skeletal muscles are made up of muscle cells. A sarcomere is the unit of the striated muscle tissue…

Q: Discuss two physiological categories of muscle fibers and their respective advantages?

A: Muscles can be defined as the type of soft tissues which consist of the actin and myosin filament.…

Q: distinguish between two physiological types of musclefibers, and explain their functional roles;

A: Muscle fiber referred to as the muscle cells present within the muscle. They are principally…