Given these events:(1) The sarcoplasmic reticulum releases Ca2+.(2) The sarcoplasmic reticulum takes up Ca2+.(3) Calcium ions diffuse into the sarcoplasm.(4) An action potential moves down the T tubule.(5) The sarcomere shortens.(6) The muscle relaxes.Choose the arrangement that lists the events in the order they occurfollowing a single stimulation of a skeletal muscle fiber.a. 1,3,4,5,2,6 c. 4,1,3,5,2,6 e. 5,1,4,3,2,6b. 2,3,5,4,6,1 d. 4,2,3,5,1,6

Q: What special terms are given to the plasma membrane, cytoplasm, and smooth ER of a muscle cell?

A: The skeletal muscles have a striated appearance, and these muscle tissues are under the voluntary…

Q: What would happen if ATP suddenly were not available after the sarcomere had started to shorten?

A: The muscular framework is an organ framework comprising of skeletal, smooth and cardiac muscles. It…

Q: f a muscle cell had very short T-tubules, how much tension would the muscle fiber create, relative…

A: T tubules or the transverse tubules are the extensions of the cell membrane that penetrate into the…

Q: As skeletal muscle contracts, one or more bands of the sarcomere become narrower and disappear, and…

A: When the myosin binds to the actin filaments, it forms the cross-bridge that causes a shortening of…

Q: Which of the following muscle cell components helps spread the depolarization of the muscle cell…

A: The objective of the question is to identify the muscle cell component that is responsible for…

Q: Summation in a single muscle fibre means that Select one: a. the fibre increases the frequency of…

A: Introduction Muscle contraction:- It is the activation of tension-generating sites within muscle…

Q: If you introduced a chemical into a muscle fiber that blocked the voltage-gated calcium channels in…

A: The muscles are the soft tissues found in the animals. They are made up of special types of…

Q: List five proteins of the myofilaments and describe their physical arrangement.

A: The myofilaments are the proteins that make up the contractile elements of muscle cells. There are…

Q: (a) What are myofibrils? (b) Which components of the sarcoplasm separate the myofibrils in a fiber…

A: The three muscle types in the human body are skeletal, smooth, and cardiac muscle. Skeletal muscles…

Q: The sarcolemna of the skeletal muscle contains receptors for ...

A: The sarcolemma is a fine tubular sheath that envelops the fibers of skeletal muscles. It can also…

Q: hypoventilation builds up carbon dioxide in the body which causes respiratory acidosis. This would…

A: “Hypoventilation” is a state that occurs when there is inadequate ventilation. The amount of oxygen…

Q: List the Histological (structural and shape) differences between skeletal, smooth and cardiac…

A: Muscles can be classified into 3 types: skeletal, smooth, and cardiac muscles. All the three…

Q: Which of the following is true concerning the role of Calcium in the contraction of muscle- cells?…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties and…

Q: Match the level of skeletal muscle organization given in the key with its description:Key:(a) muscle…

A: 1) rod shaped organelle made of sarcomeres :  myofibril…

Q: The events during the leg phase of a muscle fiber twitch begin with................ and end…

A: Muscle is a soft and contractile tissue that is responsible for body movement. Muscle cells consist…

Q: how does The reabsorption of calcium ions into the sarcoplasmic reticulum by active transport…

A: Calcium ion channels triggers the contraction through the reactions of regulatory proteins and these…

Q: If we need ATP for both contraction and relaxation, how would you explain why rigor mortis appears…

A: Rigor mortis is the onset of stiffness in the dead body several hours after the person dies. It is a…

Q: Epimysium Myosin Myofibril Muscle fiber Tendon D www Dece

A: 1)  Epimysium :Definition and Composition:Epimysium is the outermost layer of connective tissue…

Q: The greater the number of _________  involved in a motor unit, the ________ the degree of fine…

A: Muscle fibres control the physical forces within the body. They help facilitate the movement of…