Real life problem.  You are a trainer and are called on to the field where a player is down with a severe cramp of his right hamstring (biceps femoris) muscle.  You know that cramps are caused by over-active motor nerve activity to the muscle.  Your associates want to stretch the cramping hamstring, but you say, “No!  I want the player to concentrate on contracting his right quadriceps muscles before we stretch.” 2. Why would contracting the opposing muscle rapidly improve the situation?

Q: sarcomeres are at their longest

A: Each of the muscle fibers are made up of even smaller fibers called as myofibrils. The sarcomere is…

Q: Assuming that the mass (weight) of these three different muscles is the same, WHICH most power, for…

A: Understanding Muscle powerA vital component of human biomechanics, Muscular power generation is…

Q: I. Three types of muscle fibres are identified: I, Ila and IIx. 11. Type I is less resistant to…

A: answer is i, iii and iv.

Q: A motor unit with the designation 1:25 is Group of answer choices made up of a combination of Type…

A: Neurons are the basic fundamental unit of the nervous system. The task of the nervous system is to…

Q: 1. A motor unit is a functional unit formed by a neuron and all the muscle fibres it innervates. II.…

A: The spinal cord is the place where motor neurons are located. It is the site of interneurons and…

Q: 10. Muscle Actions Innervation Long Thoracic N Exercise to strengthen Based on the innervation: name…

A: The muscle innervated by the long thoracic nerActions:1. Protraction of the scapula: The serratus…

Q: 30- Which of the following is true about muscle contraction: a- Results by the actin sliding along…

A: Muscle contraction us the tightening , shortening or lengthening of muscles when you do some…

Q: The increase in muscle force that is thought to be due to neural changes with a strength training…

A: Muscles These are soft tissues made up of many stretchy fibers. There are more than 600 muscles in…

Q: QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by…

A: Nervous system is made up of highly specialised cells called neurons. The function of neuron is to…

Q: The strength of a muscle contraction is determined by: the size of the action potential sent down…

A: Skeletal muscle- It is a type of muscle that is attached to bones by tendons and enables body…

Q: During a maximal attempt, one may experience a burning sensation within the muscles being assessed.…

A: The burning sensation experienced during maximal efforts is often associated with fatigue and while…

Q: Below are data indicating the percentage of muscle fibers (Type I or Type Ilb) for three different…

A:

Q: How would you design a strength training program at your current stage of life, age 57,  and more…

A: Before starting any strength training program, it's important to assess your current fitness level.…

Q: II. Real life problem. You are a trainer and are called on to the field where a player is down with…

A:

Q: Using the biceps brachii as an example, describe the biochemical and mechanochemical series of…

A: The biceps brachii is a bi-articular muscle, which implies that it assists to regulate the action of…

Q: Select ALL that would INCREASE the strength of a muscle contraction: recruiting more slow-twitch…

A: Skeletal muscle cells are long and cylindrical, has voluntary control in action that is in under our…

Q: Compare and contrast isometric and isotonic muscle contractions. Describe muscle tone.

A: The muscular system is an essential part involved in the movement, protection and support of organs.…

Q: Describe 3 biomechanical factors that influence muscle force production. Be sure to explain how or…

A: Muscle force production is the amount of force (maximum) that skeletal muscles can produce. It is…

Q: Recruitment can be best described as ... 1. preparing for next twitch 2. a quick contraction and…

A: A motor unit is made up of a motor neuron whose axons innervate numerous skeletal muscles.Motor…

Q: Give examples of at least 5 activities that would provide muscle strengthening.

A: Weight lifting is a classic muscle-strengthening activity. It involves lifting weights, either free…

Q: Which of the following is considered a major function of the muscular system? O To generate heat for…

A: Organ systems are one of the divisions of the organisms' biological organization. They include the…

Q: MULTIPLE ANSWER QUESTIONS. Select all that apply. Which of the following occurs when the muscle is…

A: The sarcomere is the basic unit of a muscle and is dependable for contraction. It is present in both…

Q: Describe what happens to muscle during atrophy and hypertrophy. List 2 ways that atrophy occurs.…

A: Muscle atrophy   Loss of skeletal muscle mass is referred to as muscle atrophy. It can be brought on…

Q: Discuss the 5 steps involved in voluntary muscle contraction.

A: Skeletal muscles are known as the voluntary muscles of the body as they carry out the voluntary body…

Q: Actin in action, muscle satisfaction. The movement of biceps require sarcomere Select one: a.…

A: Your muscles are extended, shortened, or tightened when you undertake an activity. It might occur…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.