Why is ATP required for skeletal muscle contraction? Choose all that apply. Release myosin and actin and reset the myosin head ATP causes rigor mortis O Attaching ATP to the myosin head initiates the power stroke Pump calcium ions back into the sarcoplasmic reticulum via active transport ATP is not required for skeletal muscle contraction

Q: which decreases cytoplasmic calcium ion concentration The relaxation of skeletal muscle relies on…

A:

Q: The Sarcolemma in skeletal muscle is OA. Equivalent to the cell membrane which covers the entire…

A: There is muscle tissue throughout the body. The muscles affixed to the skeletal system are referred…

Q: For the skeletal muscle, hydrolyzation of ATP: Group of answer choices At the myosin head gives rise…

A: The contractile proteins that are involved in muscle contraction are myosin and actin. The two…

Q: The power stroke in muscle contraction is the: Group of answer choices product of force and velocity…

A: The cells that make up muscle have the unique capacity to shorten or contract to cause movement of…

Q: Actin filaments in microvilli require the help of myosin so that they can associate with the…

A: The cytoskeleton is defined as a complex, dynamic network of interconnecting protein filaments which…

Q: Looking at this diagram explain the order of size dependent recruitment of motor units during muscle…

A: Car rental refers to the performance of additional vehicles to achieve increased contraction…

Q: Treppe increases skeletal muscle contraction strength by:

A:

Q: In relaxed muscle, the myosin-binding site on adin is blocked by ?

A: Step 1 Contractile elements of muscle fibre are myofibrils. They are made up of contractile units…

Q: Which of the following are correct     Dynein head elongates like a lever arm.     ATP…

A: Movement of the body part is done by contraction and relaxation of contractile proteins.…

Q: the given below option what step causes a sarcomere to shorten? cross-bridge formation  calcium…

A: The component of a muscle fiber that contracts is called a sarcomere. Actin and myosin make up the…

Q: What are the mechanisms for muscle contraction vs. relaxation in regards to myosin/thick…

A: The mechanism of contraction of skeleton muscle was based explain through "sliding filament theory"…

Q: Select the correct statements regarding myosin-mediated contraction in the sarcomere. Ca2+ is…

A: Actin and myosin work together to produce muscle contractions and, therefore, movement.

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: In a myofibril, the light central region of an A band is called... O I band O M line O Z band O H…

A: In a myofibril, the light central region of an A band is called H zone.

Q: Order the steps of the sliding filament model from beginning (contracting) to ending (relaxing).…

A: Muscle contraction involves nerve stimuli and action potential. The contraction cycle is powered by…

Q: Why does a skeletal muscle fibers always produce the same amount of tension with a single stimulus?…

A: Muscle is a delicate tissue found in many creatures. Muscle cells contain protein fibers of actin…

Q: 7 I myosin heads firmly bound to actin 8. | threshold is reached and muscle action potential is…

A: A neuromuscular junction (NMJ) or myoneural junction is the one where a motor endplate of a motor…

Q: Myosin filaments iterdigitate with actin filaments in order to bring about muscle contraction.…

A: The process of muscle contraction is necessary for the normal physical activities of the body. Force…

Q: During muscle isometric tension, the maximum tension occurs when: O a. There is no overlapping…

A: Isometric contraction occurs when muscle length remains relatively constant as tension is produced.…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: skeletal muscles:       0.Troponin has a strong affinity              for Ca2+ Creation of…

A: Muscles There are three type of muscles cell found in human Cardiac muscle cells  Smooth muscle…

Q: Skeletal muscle will be released in its contracted (rigor) state when: Group of answer choices ATP…

A: Please note that the correct statement for the question should be "Skeletal muscle will be released…

Q: distance runners. All of tl igher concentration of gl

A: Elite sprinters make use of type II fibers more than other muscle fibers and are fast glycolytic…

Q: In your own words describe how acetylcholine ,calcium,and ATP are involved in the process of muscle…

A: Muscle contraction is a process where tension-generating sites in the muscles fibers are activated…

Q: complete tetanus    Has increased muscle length with no change in tension.   eccentric…

A: The contraction of the muscle generates a force called as muscle tension. There is also generation…

Q: During cross bridge cycling in skeletal muscle, force is created by the power stroke of the: actin…

A: The cross bridge cycling exhibits the shortening of muscles because of the movement of the…

Q: Muscle contraction involves a protein conformational change called the power stroke. Where…

A: Each myosin motor protein possesses ATPase activity and functions in a cyclical manner that couples…

Q: Please describe when the myosin heads grab and pull on the active sites in the actin fibers

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

Q: IIT Skeietal ction, calcium O increases action potential transmission along the sarcomere releases…

A: Skeletal muscle responds to the nerve impulses received by it. Contraction of muscles is the…

Q: Describe the process of skeletal muscle contraction, beginning with an action potential in a motor…

A: Skeletal muscles are voluntarily controlled.

Q: Why does a skeletal muscle cell generate the same amount of tension with each single stimulus? O…

A: Neural control initiates the formation of actin and myosin cross bridges, leading to the sarcomere…

Q: What is the best description of a contraction of the sarcomere Myosin pushes the actin fibers away…

A: Muscles are the tissue that are responsible for providing the movement to the body. It also…

Q: Muscle contraction incorrect order Calcium allows myosin to bind to the actin. A message travels…

A: Note:  the question is attempted to write the correct order of muscle contraction. Muscle is the…

Q: What causes rigor mortis? Choose all that apply.     Ca2+ leak out of the sarcoplasmic reticulum,…

A: When a person dies, the body undergoes gradual changes. The changes are: Rigor mortis - stiffening…

Q: Which of the following summarizes the role of calcium in muscle contraction? opens the binding sites…

A: The actin's active-binding sites are made visible by calcium ions attaching to the protein complex…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…

Q: Once the calcium binds, what happens next? The myosin binding sites become available so myosin binds…

A: Muscles contract" in a sequence of binding and delivering amid the sarcomere's two thick and thin…

Q: 2 T tubule 3. ATP 4. lateral sacs of the sarcoplasmic (c) supplies energy for the reticulum 5.…

A: Muscle contraction begins when the impulse arrives at a particular muscle which is going to be…

Q: Which statement or statements describe why depletion of ATP after death leads to rigor mortis?

A: Rigor mortis is the third phase of death. It is one of the unmistakable indications of death,…

Q: How does the cross-bridge result in thin filaments sliding over thick for contraction? Use key…

A: As Cross-bridge is formed myosin head is locked tightly on to an actin filament. Binding of ATP to…

Q: Which of the following is associated with smooth muscle contraction? Troponin as…

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

Q: Which of the following statements is true?     Fast glycolytic fibers have a small diameter.…

A: Fast glycolytic Fibers:  Fast glycolytic fibers, also known as type IIb fibers, are a type of muscle…

Q: Thick myofilaments contain which of the following? (Select all that apply) troponin actin myosin…

A: Myofilaments are key regulators of the contraction in cardiac and skeletal muscles. The thick-thin…

Q: Briefly explain the steps involved in a single muscle contraction beginning at the neuromuscular…

A: Muscles are tissues that can contract and expand. The muscles can be grouped into three types based…

Q: Myosin's affinity for actin occurs Following the power stroke When myosin is energized When a new…

A: Myosin is a fibrous globulin of muscle. It split ATP and react with actin in muscle contraction.…

Q: In the absence of _____, a contracted skeletal muscle will not relax but will develop rigor mortis…

A: Introduction After the death of an individual, several changes take place inside the dead body. The…

Q: The functions of tropomyosin in skeletal muscle include sliding on actin to produce shortening…

A: 1. acting as a relaxing protein at rest by covering up the sites where myosin binds to actin  2.…