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List the biomechanical factors that affect human strength?
Neural controlMuscle cross-sectional areaArrangement of muscle fibersMuscle lengthJoint angleMuscle contraction velocity
What are the 4 stages of a muscle cell?
Tonus (relaxation), Excitation (neural stimulation, Clonus (contraction), Tetanus (prolonged contraction), return to Tonus (relaxation) Or Excitation, Excitation-Contraction Coupling, Contraction, Relaxation
Is the ability of the muscle to generate force against object?
Yes, the ability of a muscle to generate force against an object is referred to as muscle strength. This strength is dependent on factors such as muscle size, muscle fiber type, and neural activation. Strength training can help improve muscle strength over time.
Individual muscle fibers can contract more or less forcefully depending on the strength of the neural stimulus?
Yes, they can.
Is the ability of muscle to exert maximum force?
The ability of a muscle to exert maximum force is known as muscle strength. It is typically tested by measuring the maximum amount of force a muscle or muscle group can generate during a specific movement or exercise. Muscle strength is influenced by factors such as muscle size, recruitment of muscle fibers, and neural control.
Factors influencing force generation?
Factors influencing force generation include muscle size, muscle fiber type, muscle architecture, neural activation, and joint angle. Muscle size and cross-sectional area are directly related to force generation, while muscle fiber type (fast-twitch vs slow-twitch) affects the speed and intensity of force production. Muscle architecture, such as the angle of the muscle fibers relative to the tendon, also influences force generation. Neural factors, such as motor unit recruitment and firing rate, play a significant role in how forcefully a muscle can contract. Lastly, joint angle can impact force generation based on the length-tension relationship of the muscle.
Is Cardiac muscle stimulation neural?
No, but skeletal muscle is.
What are the three stages of muscle cell contraction?
A Muscle Twitch is a single contraction of skeletal muscle. The three distinct phases are latent, contraction, and relaxation. Latent Phase: Is the interval from the stimulus application until the muscle begins to contract (shorten). Note that there is no traced activity during this phase, but there are some electrical and chemical changes taking place during this phase. Contraction Phase: This phase is when the muscle fibers shorten, the tracings will show during this phase (a) peak(s). Relaxation Phase: This phase is represented by the downward curve in your tracings, this is when the muscle is going back to its original state of relaxation and the muscle will once again lengthen
How does the neural signal get across the neuromuscular junction?
When an action potential reaches the end of a motor neuron, it triggers the release of neurotransmitters (acetylcholine) into the synaptic cleft. These neurotransmitters bind to receptors on the muscle cell membrane, causing depolarization of the muscle cell and ultimately leading to muscle contraction.
Why is there muscle weakness after a stroke?
When there is apparent muscular weakness after a diagnosed stroke, the problem typically is not with the muscle, but with interruption of the neural pathways that access the muscle in question. As the stroke has killed off some of the neural connections to that muscle or muscles, weakness will appear until (and if) a sort of "re-routing" occurs and neural pathways are established once more.
What is the most common neural transmitter in muscle tissue?
Acetylcholine
Cells are organized into blank such as muscle neural and cardiac?
Cells that are the same form tissues. Muscle cells form muscle tissue.
