During contraction, where does the calcium that binds to troponin come from

Q: Describe four muscle proteins and their functions.

A: Muscle contraction can be described as the process occurring within the muscle fibres, which…

Q: Describe the structure of a sarcomere. What is its function?

A: Muscles are a group of tissues that contract together to produce a force. It consists of fibers of…

Q: A mutation in troponin that increased its affinity for its ligand would lead to

A: Troponin protein helps to make muscle in rest Condition with the help of tropomyosin protein

Q: What binding sites do myosin heads contain?

A: The cells of muscular tissue that are known as muscle fibers function in muscle contraction. On the…

Q: 3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle…

A: ATP works as a cell energy currency and it helps the cell to rapidly accumulate energy and transfer…

Q: What role (function) does calcium have within a muscle fiber? a. trigger muscle potentials along…

A: Calcium is present in the sarcoplasmic reticulum until and unless it is released by the stimulus. It…

Q: What is the time relationship between a skeletal muscle fiber action potential and the resulting…

A: A skeletal muscle is a part of the “muscular system” of our body. A fiber of a skeletal muscle is…

Q: Skeletal muscle cells cannot divide. How does skeletal muscle repair itself when injured?

A: It is a form of striated muscle tissue which is under the voluntary control of the somatic nervous…

Q: What is the importance of ATP in dissociating actin and myosin?

A: Animal physiology is the systematic study of the supporting features, roles, and processes of…

Q: If you add calcium to the bath around the earthworm smooth muscle, what would you expect will happen…

A: Introduction  Earthworms have smooth muscle in their body walls which helps them in movement and…

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: Suppose a person had an unusual mutation in the troponin protein of his skeletal muscles, such that…

A: The muscular system is a system of muscles where muscles are connected to bones and also to envelope…

Q: What ion is involved in summation of contraction?

A: Contraction is defined as the process of shortening of I band during muscle contraction.

Q: In cardiac muscle, which ion serves both to depolarize the cells and as the essential link to…

A: correct amswer = b-Ca+ The shape of voltage-gated calcium channels changes as a muscle cell is…

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: Why is smooth muscle shortening much slower than in skeletal muscle?

A: Muscles are soft tissues found in the body, composed of actin and myosin proteins. These are…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Activation…

A: The membrane potential on the T-tubule membrane is sensed by a protein called the dihydropyridine…

Q: What about extracellular Ca21 in excitation-contraction coupling?

A: Excitation–contraction coupling (ECC) is defined by the Alexander Sandow (1952). It defines as the…

Q: Where does Ca2+ for contraction come from

A: Epithelial tissue, connective tissue, muscular tissue, and nerve tissue are the four fundamental…

Q: State the functions of tropomyosin and troponin

A: Introduction: All mammals have soft tissues referred to as muscles. The muscle cells comprise…

Q: Which of the following step(s) about the excitation of skeletal muscle is/are incorrect?   1.…

A: Muscle contraction is an example of a complex biological process. The excitation of skeletal muscle…

Q: Skeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity,…

A: Skeletal muscle is one of three major muscle sorts, the others being cardiac muscle and smooth…

Q: hat part of the sarcomere makes up the A band?

A: Sarcomere is the basic functional unit of the skeletal muscles. It aids in the voluntary movement of…

Q: Sarcolemma is the plasma membrane of the muscle fiber. Myosatellite cells, remain closely associated…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What are two separate steps or phases of muscle contraction that rely on calcium for proper…

A: Muscle contraction is the tightening and shortening of the muscle. Muscle contraction is an increase…

Q: Why calcium is important in skeletal muscle contraction?

A: All muscle filaments use Calcium ion (Ca2+) as their fundamental regulatory and signalling molecule.…

Q: Skeletal muscle fibres are very metabolically active and are adapted to create a lot of ATP from…

A: The purpose of this answer is to explore how the three different organ systems (respiratory,…

Q: Which type of myosin is found in contractile bundles?

A:

Q: why would skeletal muscle cell need so many nuclei?

A: Skeletal muscle is a striated muscle and it usually does not contract unless stimulated by the…

Q: Describe the contraction of a muscle fiber, starting with what events take place at the…

A: Introduction: Muscle is a mesodermal contractile connective tissue. Muscles contain unique…

Q: 2 a) What does calcium do in a skeletal muscle cell and where in the cell does it come from?…

A: Skeletal muscle contraction is a complex phenomenon and involves various processes requiring special…

Q: Why do skeletal muscle fibers appear striated when viewed through a light microscope?

A: Muscles are soft and contacted tissues present in the body. Myofibrils are a structural unit of…

Q: How does the structure of the microfilaments allow for linear contraction of a whole muscle cells?

A: Microfilaments are little, string like protein fibres with a diameter of 3-6 nm. They are mostly…

Q: What is myoglobin? Whatis the function of thismolecule in the muscle tissue?

A: In your heart and skeletal muscles, myoglobin is contained. There, oxygen that muscle cells use for…

Q: The diagram below represents the terminal cisterna in a muscle. Name and briefly explainthe function…

A: Nerve Impulse: It all starts with a nerve impulse reaching the neuromuscular junction, where a motor…

Q: What two types of muscle cells need both extracellular and introcellular calcium to contract?…

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

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Opening of…

A: Muscle contraction is a major phenomenon associated with the functioning of the myofibril occurring…

Q: Extracellular calcium ions are important for the contraction of what type(s) of muscle tissue?

A: The muscular system is one of the important parts of our body and the main three types of muscles…

Q: Skeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity,…

A: The skeletal muscle is a type of muscle that has striation, tubular structure, and multiple nuclei.…

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.