Which of These Statements Is Correct Regarding Muscle Contraction

The antagonist muscle or muscle group opposes a movement of a particular muscle or muscle group. Which statement is true regarding muscles.

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D Dystrophin is not needed to strengthen the contracting muscle cell.

. The mitochondria act as a store of Ca2 for the contractile process. Acetylcholine is released when the neural signal reaches the motor end plate. B There is a slight latent period that occurs between when the stimulus arrives at the muscle and when the muscle contracts.

Which of the following statements regarding whole-muscle contraction is TRUE. C Muscles will add motor units to a contraction increasing the overall force of contraction. A A muscle fiber contracts in an all-or-none fashion.

So the answer is true. Which of these statements is correct regarding muscle contraction. The insertion point of a muscle is attached to the fixed bone during joint motion.

Which of the following statements is true regarding isometric muscle contraction. When a muscle contracts the lighter I-band becomes wider. In all kinds of muscle it requires the entry of calcium from the extracellular fluid.

Read the statements about the mechanism of muscle contraction and select the correct answer. Thick filaments shorten when. When a muscle contracts the sarcomere remains the same size.

Which of these statements is correct regarding muscle contraction. All muscles have multiple origin points. Slow oxidative muscle fibers contain myoglobin giving these fibers a reddish color.

Contraction only occurs following summation of action potentials from many motor neurons. These processes are incomplete for muscle relaxation. Muscle contraction generates force by pulling on the structures it is.

B motor neuron action potential neurotransmitter release muscle cell action potential release of calcium ions from SR ATP. When a muscle contracts the H-zone becomes narrower shortens. -The motion of muscle shortening occurs as myosin heads bind to actin and pull the actin inwards.

Which is a TRUE statement about excitation-contraction coupling. Troponin is not needed to strengthen the contracting muscle cell. The crossbridges bind to the actin and shorten the sarcomeres.

Dynamic type of contraction. Contracting muscle fibers do not always shorten. Muscle fiber contraction is all or none.

True Selected Answer. Which of the following is the correct sequence of events for muscle contractions. Question 15 Which statement is true of muscular tissue andor muscle contraction.

The sliding filament theory explains how muscles contract. Ca2 entry across the plasma membrane is important in sustaining the contraction of skeletal muscle. O When a muscle contracts the sarcomere remains the same size.

When a muscle contracts the sarcomere remains the same size. When a muscle contracts the H-zone becomes narrower shortens. When a muscle contracts the A-band shortens.

Muscle contraction continues for long periods after nervous stimulation ceases. Which of the following statements is true regarding muscle contraction. When a muscle contracts the lighter I-band becomes wider.

ATP is needed for the thick filament to bind to the thin filament Acetylcholine is the neurotransritter that binds to the sarcolemma Tropomyosin protein covers the binding. Calcium-induced calcium-release plays a role in cardiac. C The crossbridges bind to the actin and shorten the sarcomeres.

A neurotransmitter release motor neuron action potential muscle cell action potential release of calcium ions from SR ATP-driven power stroke. - Myosin binds to actin at a binding site on the globular actin protein. B Muscle contraction continues for long periods after nervous stimulation ceases.

-Myosin has another binding site for ATP at which enzymatic activity hydrolyzes ATP to ADP releasing an inorganic. Cranial bone sutures are classified as fibrous joints Selected Answer. Which of the following statements regarding muscle contractions is NOT true.

Tension is developed to either cause or control joint movement. When a muscle contracts the A-band shortens. The contraction of muscle happens when acetylcholine cleaved from its receptor and the sarcoplasmic reticulum released calcium the actin and myosin binding take place and the fibers of muscle contracted to a shorter length.

Anatomy and Physiology QA Library Which of the following statements is true regarding muscle contraction. Point Which statement Is NOT true regarding muscle contraction. A rise in intracellular Ca2allows actin to interact with myosin.

Sites for the thick filament on thc actin protein The sarcoplasmic reticulum stores the calcium Ions that are released within the muscle. During muscle contraction isotropic band gets elongated. The order of recruitment of motor units in a muscle is such that the last.

Varying degrees of tension in muscles are causing joint angles to change. Tension is developed within a muscle but joint angles remain constant. A sprain is damage to a muscle or its tendon.

Contraction does not always require the occurrence of an action potential. -This action requires energy which is provided by ATP. When a muscle contracts the A-band shortens.

During contraction the thick filaments are pulled towards the center of the sarcomere. Which of the following statements is true regarding muscle contraction. Slow oxidative muscle fibers contain myoglobin.

A All motor units act together. In smooth muscle cells it must be preceded by an action potential in the cell membrane. When a muscle contracts the lighter I-band becomes wider.

ATP and muscle contraction -. In skeletal muscle cells it requires the influx of extracellular calcium ion. When a muscle contracts the H-zone becomes narrower shortens.

Muscle contraction is initiated by a signal sent by CNS via a sensory neuron.

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