Explain how the process of skeletal muscle excitation–contraction coupling demonstrates the general principle of physiology that controlled exchange of materials occurs between compartments and across cellular membranes.

Q: During one cross-bridging cycle in striated muscle one ATP molecule is hydrolyzed. Explain the two…

A: In striated muscles, during a muscle contraction, tropomyosin has to change its conformation to…

Q: Contrast the role of Ca2+in the contraction of a skeletalmuscle fiber and a smooth muscle cell.

A: Muscles are soft tissues present in most animals. They contain protein filaments called actin and…

Q: Explain the requirements for Ca^ 2+ and ATP in muscle contraction and relaxation.

A: A muscle contraction is defined as an increase in the tension or a decrease in the length of a…

Q: Explain with diagram Transverse tubules and sarcoplasmic reticulum in a single skeletal muscle…

A: A muscle is an animal tissue and composed of muscle cells. These cells consist of protein filament…

Q: Explain the differences between isometric and isotonic contractions.

A: Answer: Introduction: Isotonic contraction (iso=equal; tonic= tension), means the tension produced…

Q: .The poison ouabain (wah-BAY-in), or arrow poison, blocks the Na+ K+pump. What effect would this…

A: Ouabain is also called the g-strophanthin. It is a toxic substance derived from a plant that was…

Q: Describe the effect of adding salts then ATP, ATP and then salts, and addition of ATP and salts…

A: Glycerianted muscle is the muscle in which calcium ion is not required of its contraction  The…

Q: Describe the structure of the sarcomere and explain how it enables muscle contraction according to…

A: Answer- The sarcomere is the functional unit of the muscle and it has the central role in the muscle…

Q: Using the tension graph, explain why skeletal muscle can exhibit tetany (sustained contraction) but…

A: Physiologic tetanus refers to sustained muscle contraction, which occurs due to the generation of…

Q: Myofibis in muscle fibres are made up of repeating units of dark and light bonds called

A: Myofibril is a muscle cell that is shaped like a rod. Many chains of Myofibril bound together to…

Q: Describe the events by which depolarization of a smooth muscle cell results in contraction and…

A: Smooth muscle is a kind of muscle that is used by various systems to apply pressure on organs and…

Q: Describe the major events that occur when a muscle fiber contracts. Include all chemicals,…

A: Numerous bundles which make up the skeletal muscle are called fascicles and each of these is…

Q: Compare the inner layer of smooth muscle with circumferentially running muscle cells,to the outer…

A: Internal soft organs have visceral smooth muscle in their walls (viscera). Muscle cells are joined…

Q: Describe a cycle of cross-bridge activity during contraction and discuss the role of ATP inthis…

A: 1. when Ca+ binds to the troponin, the active site on the actin is exposed 2.  myosin and actin form…

Q: skeletal muscle contraction

A: The muscular system is an organ system consisting of skeletal, smooth and cardiac muscle. It permits…

Q: A skeletal muscle can be stimulated, under laboratory conditions, with a supramaximal stimulus. Is…

A: As the nervous system produces electrical stimuli called an action potential, it passes through a…

Q: Explain why cardiac muscle cannot undergo tetanic contractions?

A: Cardiac muscles are the muscles present in the heart. They are involuntary in action which means…

Q: If a muscle cell’s sarcoplasmic reticulum had little to no Ca2+, could the muscle cell still produce…

A: Ca2+ ions play an important role in muscle contraction by creating interactions between the…

Q: What is the maximum distance that diffusion is effective for oxygenating a muscle cell? How does the…

A: Introduction :- Muscle cells are also known as myocytes and these are of different types :- skeletal…

Q: What evidence supports a sliding filament-cross-bridge mechanism of contraction in smooth muscle?,…

A: The evidance for sliding filament cross bridge mechanism  is inferential  and derived from…

Q: Sketch a sarcomere, and describe the function of the major proteins involved in muscle contraction.

A:

Q: If ligand-gated K+ channels were to open in an unstimulated muscle fiber,how would this affect the…

A: The ligand-gated channels are those channels that open in response to the ligand which could be…

Q: In the process called "excitation-contraction coupling" (the events that lead up to a muscle cell's…

A: When an organism is dead, there occurs stiffening of muscles. This is termed as Rigor mortis. This…

Q: Explain the relationship between weight of the sedimented muscle and degree of hydration of muscle…

A: The first step of these methods is to selectively extract and separate myofibril proteins.  Then,…

Q: Explain how the length of a muscle fiber at the time it is stimulated to contract affects the…

A: Introduction:- The functional unit of striated muscle is the sarcomere. This is the most fundamental…

Q: Describe the physical state of muscle fiber in rigor mortis and the conditions that produce this…

A: According to the question, we have to mention the physical state of muscle fiber in rigor mortis and…

Q: Describe the changes that occur in skeletal muscle as a result of endurance training. Include a…

A: Endurance training is sustained physical exercise to improve the endurance of an individual.…

Q: NAME THE CHEMICAL TRANSMISSION AND THE NERVOUS SYSTEM BETWEEN A MOTOR NEURONE AND A SKELETAL MUSCLE.…

A: Answer: Introduction: Most skeletal muscle is connected to bone and its contraction it has role in…

Q: Give an account of the excitation-contraction coupling (Figure 3) in skeletal Highlight the role of…

A: Each skeletal muscle fiber is a single cylindrical muscle cell. An individual skeletal muscle may be…

Q: Mention the two main proteins of the skeletal muscle with their subdivisions

A: Skeletal muscle are made up of various tissues that are integrates. They consits of skeletal muscle…

Q: In light of the "all or none" law of muscle contraction, how can you explain the graded response?

A: The study of the human body can be divided into anatomy and physiology. The anatomy studies about…

Q: Compare the (i) contraction, (ii) excitation-contraction coupling in smooth muscle, cardiac and…

A: Introduction The muscular system is an organ system consisting of skeletal, smooth, and cardiac…

Q: Differentiate between isovolumetric contraction phase and isovolumetric relaxation phase

A: A cardiac cycle includes all the events within the heart from the start of one heartbeat to the…

Q: Explain what the zone of overlap is, and how it contributes to muscle contraction (hint: include…

A: We are answering the first part only. For rest of question pls repost.

Q: Draw the diagram of a sarcomere of skeletal muscle showing different regions.

A: Muscle is formed by skeletal muscle fiber and they contain cytoplasm with cellular structures such…

Q: Explain, giving two causative factors, why skeletal muscle displays fatigue.

A: Skeletal muscle is a form of striated muscle tissue which is under the voluntary control of the…

Q: Explain how the diameter of skeletal muscle fibers varies and what type of muscle tissue grows as…

A: A single muscle cell is made up of muscular fibres. They help in the control of the body's physical…

Q: A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast…

A: In skeletal muscle fibers, contraction in Slow oxidative (SO) fibers is relatively slow and use…