If implanted electrodes were used to stimulate action potentials in gamma motor neurons to flexors of the left arm, which would be the most likely result?a. inhibition of the flexors of the left armb. a decrease in action potentials from muscle-spindle receptors in the left armc. a decrease in action potentials from Golgi tendon organs in the left armd. an increase in action potentials along alpha motor neurons to flexors inthe left arme. contraction of flexor muscles in the right arm

Q: Predict what might happen to a muscle cell that is extensible but not elastic. What if the reverse…

A: Extensibility and elasticity are the properties of every muscle of the body.  Extensibility is…

Q: muscle cells are made up of? A. Z bars b. actin c. myosin d. myofibrils

A: Muscles are soft tissues found in most of the animals. Functions of muscles are to produce motion…

Q: why does a person with muscles that have a higher percentage  of slow fibers have greater endurance…

A: Muscles are basically a tissue type consisting of subunits called myofibrils. Along with bones…

Q: Which of the following statements about movement and locomotion isfalse?a. Terrestrial animals and…

A: The process called movement is the temporary or permanent displacement of the part of the body of a…

Q: Predict what would happen to skeletal muscles of the body if an individual exposed to chemicals that…

A: Muscles are the body's greatest protein storage facility. The body prefers to get protein from…

Q: Suppose you suffer a cut through the spinal cord on the left side only. For the part of the body…

A: In the human body, the perception of sensory signals is mediated through the sensory receptors. Upon…

Q: What is the first and most direct energy source for muscle con￾traction? a. glucose b. ATP c.…

A: Answer- The muscle contraction is the crutial step in the movement and locomotion.

Q: Which statement best summarizes why muscles often work in pairs

A: A tissue that is soft and is found in most of the animal’s skeletal system is known as muscle.…

Q: When do the posterior parietal cortex, premotor cortex, and supplementary motor cortex become most…

A: Voluntary movements need the participation of the fourth and third levels of hierarchy, the…

Q: Predict the consequences if cardiac muscle could undergo tetanic contraction

A: Tetanic contraction is referred to as the muscle contraction in which the motor nerve in the…

Q: The Achilles tendon reflex is observed when the Achilles tendon of a person is tapped with a…

A: The Achilles tendon reflex is a reflexive response that involves the interaction of sensory and…

Q: Activation of PKC in the direct perforant pathway leads to which effect? a. insertion of new AMPA…

A: Protein kinase C is a family of protein kinase enzymes that are involved in  controlling the…

Q: How is electrical excitation of a skeletal muscle fiber coupled to muscle contraction? Speculate…

A: Acetylcholine is released by motor neurons which binds to receptors in the motor endplate. A neural…

Q: Which is the first step in the contraction phase of the excitation-contraction coupling? a. Action…

A: Excitation-contraction coupling commences with depolarization and stretch of an AP along the…

Q: Predict how skeletal muscle contraction would beaffected by changes in electrical activity in motor…

A: Introduction: At the neuromuscular junction, the motor neuron sends signals to muscle fibers. It…

Q: To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm…

A: Ans - the correct answer for the above question is- A) Different motor units were contracting while…

Q: Which contractile result of rate coding will produce the most force? a. twitch b. summation c.…

A: Muscle is highly specialized tissue which plays a very important role in body movements along with…

Q: Which event listed above is the point at which myasthenia gravis interrupts the process? A. Nerve…

A: A neuron is the structural and functional unit of the nervous system. It helps in the transmission…

Q: 3.5 2.5 2 1.5 0.5 3. 1.

A: Muscles are considered to be the special type of tissue originating from the mesodermal region. It…

Q: Which receptor is an adrenergic receptor that results in broncodialation when activated by agonist?…

A: The human body contains different types of receptors, which are proteins found on the surface of…

Q: How are motor neurons involved in muscle contractions? Select all that apply. The release of calcium…

A: It is a neuron whose cell body is located in the motor cortex, brainstem or the spinal cord and…

Q: An experimental drug blocks the body’s muscle spindles from detecting stretch. Predict the effects…

A: Muscle spindles are defined as the stretch receptors within a muscle's body that sense differences…

Q: In which species, if any, can axons regrow in the spinal cord? A. In humans only B. In fish C. In…

A: Answer is B.) in fish.

Q: During which phase of the crossbridge cycle is ATP split into ADP and Pi? A. Immediately preceding…

A: Cross bridge cycling refers specifically to the action of the cross-bridge, that being the head and…

Q: What is the function of intercalated discs?   A. Unite skeletal muscles electrically and physically…

A: Muscular system is a type of body system which is involved in contraction as well as relaxation so…

Q: According to Libet’s study, what is the order of events in a voluntary movement?A. People form an…

A: Free movement is the manifestation of thinking by action. This mechanism involves almost all parts…

Q: When Sperry cut a newt’s optic nerve and turned the eye upside down, what happened?A. Axons of the…

A: The nervous system- It is made up of nerve cells and it is responsible for maintaining many…

Q: When do neural discharges in the brain have their strongest effect? a. When the discharge rate of…

A: Introduction: The basic unit of communication in the nervous system is the nerve cell (neuron). Each…

Q: Identtidy which among the list represents the hierarchy of muscle structure from the largest unit to…

A: Muscles are connected to bones by means of tendons. They contract to produce movement and thus help…

Q: When you “max out” on reps or pushups or something like that, what kind of stimulus is your brain…

A: Exercise builds and strengthens muscles, which can protect the bones from injury, and support and…

Q: What is the monomoric form of actin referred to as?   a. F-actin   b. G-actin   c. M-actin…

A: Actin exists in two forms. They are G-actin (or globular actin) and F-actin (or fibrous actin).…

Q: What does ATP binding to myosin head triggers?     a. Its association with microtubules     b.…

A: It is a superfamily of protein which bind actin , hydrolyze ATP and transduce force. Myosin is the…

Q: Which is not an action of a muscle? activate push pull O a. O b. O c. O d. contract

A: Muscle action means the muscle movement. This includes both contracting and relaxing.The  muscle…

Q: According to Sherrington, why do the extensor muscles of a leg relax when the flexor muscles…

A: Muscles are the organs of the muscular system and it can be classified into three types based on…

Q: What did Galvani's first round of frog experiments demonstrate? A. Nervous tissue is reactive in the…

A: Galvanis experiments on frogs involved the observation of the muscular contractions in frog legs…

Q: What happens at a neuromuscular junction? a. An electrical impulse causes the release of a chemical.…

A: A neuromuscular junction is a chemical synapse between a motor neuron and a muscle fiber. It permits…

Q: Where is ATP's energy used during crossbridge cycling? A. When ATP attaches to myosin and causes…

A: Muscle cells are specific for contraction. It allows for motions and facilitates bodily processes…

Q: https://www.exploratorium.edu/blogs/tangents/stadium-waves A.Describe the movement of one person in…

A: The stadium waves begin appearing in the late 80S at almost all the sporting events big or small.…

Q: A half-second stimulation in the motor cortex produces what kind of result?A. Isolated muscle…

A: Introduction: The soft tissue present in almost all mammals is the muscles. The muscle cells…

Q: Which statement describes the depolarization of a nerve?  A. Depolarization occurs across the entire…

A: Introduction:- The nervous system is a major regulatory and communication system in the body. It is…

Q: What happens when myosin filaments hydrolyze ATP molecules in muscles?    a. Actin–myosin complexes…

A: The specialised cytoplasm of a muscle fiber is called sarcoplasm which contain fine thread like…

Q: Which statement CORRECTLY describes a motor unit? O a. A single muscle fibre plus all the motor…

A: The muscle fibers are functionally organized as the motor units. All the varied reflexes and the…

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.