Question

One muscle can produce a variation of smooth forces called ______________ ______________________________. And they're generally affected by both the __________________ and ______________ with which they're stimulated

Answer 1

A muscle can produce varying levels of force through a mechanism called graded muscle responses, which are affected by the frequency and intensity of neural stimulation. Actin-myosin interactions in the sarcomeres, fueled by ATP, allow for this regulation, resulting in different force productions necessary for movements ranging from light to heavy lifts.

Step-by-step explanation:

One muscle can produce a variation of smooth forces called graded muscle responses. And they're generally affected by both the frequency and intensity with which they're stimulated. Graded muscle responses are a way to vary the tension in muscle tissue, and this variation allows for different levels of force production depending on the task at hand, such as lifting light objects like a pencil or heavy objects like a piano.

The control of muscle tension and the smooth forces produced are primarily determined by the number of myofibers within the muscle that receive an action potential from the neuron that controls the fiber, and by the frequency of neural stimulation. The more myofibers that are activated, the greater the force. Additionally, increasing the frequency of action potentials allows for a larger influx of calcium, which can increase the force further because more actin-myosin cross-bridges are formed.

Muscles work by using the sliding filament model of contraction where actin and myosin filaments slide past each other to shorten sarcomeres and produce movement. This process is fueled by ATP and regulated by proteins like troponin and tropomyosin. The nervous system controls the activation of these muscle fibers, determining the tension and force produced during muscle contraction.

Answer 2

Answer: One muscle can produce a variation of smooth forces, called graded muscle responses. And they’re generally affected by both the frequency and strength with which they’re stimulated

Explanation: Muscle fibers are a collection thousands of fibers responding to a single action from a neuron to form a motor unit which can either be large motor units controlling activities like walking and small motor units controlling activities like blinking the eye. These muscle movements are smooth and produce smooth forces called The graded muscle responses which depends on the magnitude of forces in releasing and contracting of muscles when carrying out an activity. The force exerted by the graded muscles responses depends on the energy exerted ---strength and number of times, such muscle is used ---frequency.