The contraction cycle does not always result in shortening of the muscle fibers and the whole muscle.

Q: sarcomeres are at their longest

A: Each of the muscle fibers are made up of even smaller fibers called as myofibrils. The sarcomere is…

Q: Muscle contraction can occur when: is it 1,2,3,4? A bands lengthen. myosin filaments shorten.…

A: Muscle is a specialized contractile tissue that is a distinguishing characteristic of animals.…

Q: Explain the structure and organization of muscle fascicles and the role in generating force include…

A: Bones, ligaments, muscles, tendons, etc. constitute the musculoskeletal system. The body movement is…

Q: Muscles in unfused/incomplete tetanus reach maximum tension while relaxing slightly between stimuli.…

A: Tetanic muscle contraction Tetanic muscle contraction can be either complete or incomplete. Complete…

Q: Summation of contraction is also known as wave summation . Describe the role of calcium in wave…

A: The primary function of wave summation is to produce a smooth and continuous muscle contraction. It…

Q: Which protein is responsible for blocking the myosin binding site to actin, while the muscle is at…

A: Myosin and actin slides onto each and plays a major role in muscle contraction..

Q: The 2 main proteins in muscle cells are _______ and ___

A: According to the question, we have to mention the names of the two main proteins present in muscle…

Q: Type II (fast twitch) muscle fibers contain what properties?    Select 2 correct answer(s)…

A: Skeletal system are the major organ system of the human body that provides framework and structural…

Q: The I band of a sarcomere is widest when a muscle is relaxed true or false

A: Muscular system is a type of body system which is involved in contraction and relaxation of muscles…

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: Step by Step procedure of a muscle contraction

A: When a muscle is stimulated, it contracts. Muscle contraction is a mechanical event but it's the…

Q: The region where a motor nerve fiber meets a skeletal muscle fiber is called a/an _____.

A: Muscles are the connective tissue that helps in producing movement in the body. There are three…

Q: In a muscle, muscle fibers are arranged in bundles that are wrapped in a thick layer of connective…

A: Tissue is the next level organization of the cells. There are 4 different types of tissue are…

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Muscles constitute a set of specialized tissues which play an important role in body movements along…

Q: Match the word in the word box with the following definition this type of stretching involves…

A: Stretching is a form of activity necessary for body movement. This has various phases and forms. It…

Q: Why are calcium ions so important for the muscle contraction process

A: Muscle contraction is a process carried out by the interaction of the actin and myosin proteins. It…

Q: S2

A: We can say that muscular tissue consists of cells called muscle fibers that are specialized for…

Q: Myoglobin provides muscle fibers with a means of supplying ATP anaerobically. True or False

A: The globin is a globular protein that contains heme group and it plays a vital role in binding and…

Q: A (low or high frequency) of action potentials results in the fusion of muscle twitches to produce…

A: A muscle twitch is defined as the involuntary contraction of the muscle fibers. Muscle fibers are…

Q: Tetanus is a phenomenon where muscle fibers are continuously contracted. What best explains this?…

A: Tetanus is a sustained muscle contraction evoked when the motor nerve that innervates a skeletal…

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: What is NOT related to temporal summation for muscle contraction? residual Ca2+ in the muscle…

A: Temporal summation of muscle contraction can be described as a sensory summation involving the…

Q: These agents affect rate of contraction

A: Introduction: The nervous system is organized into the peripheral nervous system (PNS) as well as…

Q: Which among the four choices below is NOT a typically way to measure muscle strength? Maximum force…

A: The maximum force a muscle or a muscle group may exert during a contraction is known as muscular…

Q: active muscle tension begins at approximately one hundred percent of resting length for a muscle…

A: Muscle tension is the condition where muscles of the body remain semi-contracted for a lengthy…

Q: True/False

A: Every living organisms try to maintain a constant homeostatic internal environmental conditions that…

Q: Smooth muscle is characterized by all of the following except _______. Group of answer choices has…

A: Smooth muscle is a non-striated type of muscle found in the walls of hollow organs and blood…

Q: Which of the following sites is not a site of muscle attachment? Greater trochanter, lesser…

A: The skeletal muscles attach to the bones or muscles at various sites called origin and insertions.

Q: Graded muscle contractions ________. depend on activation of more and more motor units depend…

A: Muscle cells are made up of two key protein filaments called actin and myosin. These proteins are…

Q: Perimysium surrounds individual muscle cells. O True False

A: The tissues in the human body are differentiated into four main divisions – epithelial tissue,…

Q: when a skeletal muscle is stimulated by nerve to contract acetylocholine first reaches Actin…

A: Cytoskeleton is an intracellular network of protein filaments present in the cytoplasm. There are…

Q: Embryonic myoblasts fuse to form single muscle fibers during development; thus skeletal muscle cells…

A: Embryonic stem cell is a pluripotent cell which has the ability to differentiate to all other cell…

Q: Tropomyosin covers the active sites on actin until it is ready for myosin to bond for a muscle…

A: Introduction:- The muscular system is an organ system that connects bones, tendons, and heart…

Q: Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back…

A: The muscle tissue present in the human body is primarily responsible for the movement in the body.…

Q: Skeletal muscle fibers regularly divide by mitosis. True False

A: Muscle tissues are are the types of tissue which have proficiency to extend  , relax , possess…

Q: Contractile muscle cells cannot be created in culture.     True     False

A: Contractile muscle cell present in body as a skeletal muscle, smooth muscle and heart muscles. The…

Q: Which of the muscle fiber types have the lowest amount of capillaries, mitochondria, and myoglobin,…

A: Introduction : Types of skeletal muscle fibres, including slow vs fast twitch, are distinguished.…

Q: Which of the following are part of the muscle contraction process?(More than one answer may be…

A: Muscle contraction is the basis of all skeletal movements. Skeletal muscles are composed of muscle…

Q: When motor units are recruited to participate in tension development in a muscle, the order of…

A: Introduction  A motor unit consists of a motor neuron as well as all of the skeletal muscle fibres…

Q: Skeletal muscle cells have the ability to do all of the following EXCEPT _____.     activating…

A: Skeletal muscle is a type of three major muscle types, the others being cardiac muscle and smooth…

Q: Which of the following muscle proteins isnot intracellular?a. actinb. myosinc. collagen

A: The muscle proteins are the filaments that are present in the muscle cells and are principal…

Q: Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.

A: The human body is a plethora of fascination. There are different organ systems that function in the…

Q: As an action potential moves along the sarcolemma, the brief opening of voltage-gated Na+ channels…

A: In the resting state, the inside i.e., sarcoplasm contains high concentration of K+ ions and…

Q: What is the mass transfer by diffusion for t:slim insulin pump ?

A: introduction t:slim insulin pump is designed by micro delivery technology.  it This product costs…

Q: A football player throwing the football is using more fast twitch muscle fibers. True False

A: Muscle fiber referred comprises the individual muscle cell and they can control the physical…

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.