During muscular contraction, cross-bridges form between _____ and _____ . Multiple Choice   a) myosin, tropomyosin   b) myosin, troponin   c) troponin, calmodulin   d) actin, tropomyosin   e) actin, myosin

Q: What is the function of Myosin molecules?

A: BASIC INFORMATION  MUSCLE It is a type of soft tissue which are found in most of the animals. The…

Q: Define the term Twitch Contractions?

A: A twitch is often described as a period of muscle contraction and relaxation in a muscle in response…

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: Describe the features of the Sliding Filament Mechanism?

A: The cardiac muscle tissues and the smooth muscle tissues of the human are involuntary in nature. The…

Q: Which of the following are aspects of the structure of skeletal muscle? Select all that apply.…

A: MUSCULAR TISSUE:- This tissue is different from the rest of the tissue as this tissue can contract…

Q: Which region or organelle—cytosol, mitochondrion, or SR—contains the highest concentration of…

A: In a resting skeletal muscle cell, low amounts of calcium ions are present in the cytosol. The…

Q: What is the function of myosin light-chain kinase in smooth muscle?

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

Q: What would happen if you accidentally ingested a toxin that completely inhibited the function of the…

A: All the membrane of the cells, as well as their organelle, possess several different types of ion…

Q: Single-unit smooth muscle cells can stimulate each other because they havea. a latch-bridge.b.…

A: The myocyte is also known as a muscle cell or the type of cell found in some types of muscle tissue.…

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: Describe the clasp-knife phenomenon?

A: Clasp-knife response refers to a Golgi connective tissue reflex with a speedy decrease in resistance…

Q: What event causes a troponin-tropomyosin complex to regain its original shape in muscle relaxation?…

A: Muscle contraction is the activation and formation of tension sites with muscle fibres, while muscle…

Q: What cells come between mesodermal cells and the muscle fiber in the stages of skeletal muscle…

A: The embryonic mesodermal germ layer give rise to the muscle tissue, except the piloerector muscles,…

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: When sarcomeres contract during muscle contraction, which of the following occurs?   A. The myosin…

A: Sarcomeres contract during muscle contraction.

Q: describe the structure of vertebrate skeletal muscle, from a whole muscle through individual muscle…

A: Skeletal muscle is a specific contractile tissue found in creatures what capacities to move a life…

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

A:

Q: Diagram the arrangement of thick and thin filaments in a striated-muscle sarcomere, and label the…

A: While muscle contracts the I (isotropic) band  and H band shortens .Tge length of each sarcomere of…

Q: Describe the structure and the role of the Sliding-Filament Mechanism?

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

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: Myosin II action differs from that of kinesin in that one of the kinesin heads is always in contact…

A: Introduction Motor motion, including as contractions and expansions, is controlled by myosin. Muscle…

Q: The role of tropomyosin in a muscle cell is to ____. all to cell to relax by blocking the binding…

A: Tropomyosin is a protein which is involved in skeletal muscle contraction. all to cell to relax by…

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: Provide one difference and one similarity in the process of contraction of smooth, skeletal, and…

A: Muscles are divided into three categories: cardiac, smooth, and skeletal. Cardiac muscle is found in…

Q: With regard to muscle contraction, which of the following is an INCORRECT statement with regard to…

A: The muscle cells contain a striped pattern or striations which is formed by a series of basic units…

Q: What is the fundamental contractile unit of skeletal muscle? b. What are the names of the bands,…

A: Muscle contraction occurs when sarcomeres shorten, as thick and thin filaments slide past each…

Q: Which of the following are aspects of the structure of skeletal muscle? Select all that apply.…

A: Our muscular system is made up of muscle tissues that are usually three types, skeletal muscles,…

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: Name four kinds of solutions that can cause tissue to detach from slides in tissue sectioning?

A: Tissue detachment  Insufficient fixation or the tissues which are not fixed tend to come off slides…

Q: Myosin binds to actin, then bends. What is ATP needed for next? A. to pump the Ca++ “keys” back into…

A: D option is the correct statement.

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

A:

Q: Why is myosin II the only myosin capable of producing contractile force?

A: Introduction Myosins are a group of motor proteins that play a key role in muscle contraction and a…

Q: Skeletal, smooth, and cardiac muscle are similar in that they all _____.   A are divided into motor…

A: SKELETAL MUSCLES SMOOTH MUSCLES CARDIAC MUSCLES They are striated muscles. They are non-striated…

Q: Pick the right order for muscle contraction a) ATP attaches to myosin, muscle cell uses calcium,…

A: Within the muscle cell the actin and myosin interaction occurs. The acting is a cytoskeleton protein…

Q: Which fiber is included in the sarcomeres, ie the contractile units found in muscle fibers?…

A: Muscles These are organs which constitutes muscle fibers or cells. Fibers or cells are specialized…

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: When ATP binds, what prevents the filaments from sliding back into their original positions?

A: Adenosine triphosphate (ATP)  are energy rich currencies of life that stores and supplies energy to…

Q: What creates the striated appearance of a skeletal muscle cells?

A: Muscle tissue can be divided into three major types as cardiac muscles, smooth muscles, and skeletal…

Q: In the sliding filament theory of contraction, what prevents the filaments from sliding back to…

A: Sliding filament theory of muscle contraction: this theory states that sliding of actin filament…

Q: This thick filament motor protein composed of 6 polypeptide chains uses ATP hydrolysis to interact…

A: Skeletal muscles are attached with the skeleton. Muscle is made up of contractile, structural and…

Q: Define the term bolting?

A: Horticulture is the practice of growing plants in gardens for the purpose of producing food and…

Q: How does calcium release in the muscle fiber result in the cross-bridge for contraction? Use key…

A: Thin filaments contain the protein actin, nebulin, tropomodulin, tropomysoin and troponin. Troponin…

Q: Define unipolar leads?

A: Unipolar leads are used in the ECG Electrocardiograph. Electrocardiograph or ECG is a procedure…

Q: Contraction of muscles requires binding of various components of muscle fiber. Which of the…

A: Introduction Muscle contraction can be defined as the activation of tension-generated sites within…

Q: How do we know that there are vesicles filled with neurotransmitters at the neuromuscular junction?…

A: The chemical messengers of the body are typically referred to as neurotransmitters. They are the…

Q: If you were to watch muscle tissue contract: Under a light microscope, would you see the muscle…

A: Muscles play a vital role in the force and motion of the body. They contain protein filaments of…

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.