The multinucleate muscle fibre shown above is a striated v cell surrounded by a sarcolemma v. Each multinucleate v contains the proteins v to make the myofilament v. The alternating v bands give the cell a appearance. During a v contraction, the I band reduces in length whereas the v remains the same length.

Q: Which of the following is NOT true regarding actin? O It contains troponin and tropomyosin O It is a…

A: Among the given options, option (d) is the most appropriate. All the mentioned statements are true…

Q: In the sliding filament model of muscle contraction, I bands contain     sacrcomeres.     thin…

A: The cytoskeletal proteins including actin filament or microfilament, microtubules and intermediate…

Q: For the skeletal muscle, hydrolyzation of ATP: Group of answer choices At the myosin head gives rise…

A: The contractile proteins that are involved in muscle contraction are myosin and actin. The two…

Q: The power stroke in muscle contraction is the: Group of answer choices product of force and velocity…

A: The cells that make up muscle have the unique capacity to shorten or contract to cause movement of…

Q: What is associated with the formation of a cross-bridge in skeletal muscle? ADP release from myosin…

A: Any movement requires the contraction of skeletal muscles. Muscles contain actin and myosin…

Q: Hill's equation gives a relation between muscle contraction rates νν and muscle tension TT…

A: We have to rewrite the equation in a form to show that T is dependent on v including T0, alpha and…

Q: Certain multi-headed myosins bind cooperatively to actin filaments. The binding interaction is…

A: As seen in the graph, when one aminoacid asp residue changes into leucine amino acid in eachs…

Q: e following are reg itch? (choose all that apply) e first phase where the "cross-bridge" c

A: The contraction of a muscle fiber in response to a stimulus by the nervous system is called as a…

Q: According to the sliding filament mechanism of skeletal muscle contraction, during contraction: The…

A: The myofibrils of skeletal muscles contain alternatingly dark and light bands. The dark band is…

Q: Select the correct statements regarding myosin-mediated contraction in the sarcomere. Ca2+ is…

A: Actin and myosin work together to produce muscle contractions and, therefore, movement.

Q: Why does a skeletal muscle fibers always produce the same amount of tension with a single stimulus?…

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

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

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: In both smooth and skeletal muscle calcium must be actively transported out of the fluid surrounding…

A: As per our honor code, we are authorized to answer only one question at a moment. As you have not…

Q: Arthropod muscle fibers typically do not generate action potentials. Using your knowledge of their…

A: Arthropods are with jointed appendages and a chitinous exoskeleton. They are modified to live in…

Q: Motor unit is an electrical signal that is produced on Also known as an 1Cimpulse, 1D a(n)…

A: Neurons or nerve cells are the workings and the structural unit of the nervous system. It helps in…

Q: When discussing the hierarchy of skeletal muscle organization, the is the Highest level of…

A: Humans consists of various systems one such system is the muscular system that consists of muscle in…

Q: As sarcomere shortening progresses during muscle contraction, which structure gets progressively…

A: A muscle contraction:-It can be defined as an increase in the tension of the muscle.-It can also be…

Q: All the following are necessary for a skeletal muscle cell to full relax, except one. Which answer…

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

Q: Why does a skeletal muscle cell generate the same amount of tension with each single stimulus? O…

A: Neural control initiates the formation of actin and myosin cross bridges, leading to the sarcomere…

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: Part E- Identification of the Events of a Muscle Contraction Drag and drop the correct terms in the…

A: Muscles are the soft tissues that cover the entire body system It is mainly composed of two proteins…

Q: A muscle has a limit to how much it can contract, based on the limit of contraction of each…

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

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: While Colette is researching weight lifting techniques, she finds contradictory information about…

A: Skeletal muscle cells are long and cylindrical, voluntary in action and are referred to as muscle…

Q: Order the following steps of muscle contraction: Drag and drop options into correct order and…

A: The action potential is initiated and propagated through the motor neurons to finally reach the…

Q: 6. Identify each of the following structures when given images of skeletal muscle fibers such as the…

A: Muscle is originated from mesoderm. They help in locomotion and movement. There are three types of…

Q: Which of the following is NOT true of fast oxidative skeletal muscle fibers? O All of the above…

A: Muscular tissue consists of cells called muscle fibers that are specialized for contraction.…

Q: A motor unit associated with the stimulation of skeletal muscle is designated as a 1:8 motor unit.…

A: A motor unit is made up of a motor neuron and the skeletal muscle fibres innervated by that motor…

Q: Arrange the steps of muscle innervation and contraction in response to touching a hot plate.…

A: Sensory neurons(afferent neurons) are defined as the type of nerve cells where they get activated…

Q: If Ca2+ pumps of the sarcoplasmic reticula fail to function, what will happen to the tension…

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the…

A: The lighter, thinner stripes noted under the microscope are actin. Under a microscope, the thick and…

Q: In the process of muscle contraction, which of the following steps immediately comes after the…

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

Q: Which of the following shortens in length during skeletal mucle contraction? select all that apply…

A: During muscle contraction there occurs contraction of sarcomeres, as thick and thin filaments slide…

Q: the

A: Muscle contraction:- Is the response  a muscle has to any kind of stimuli where the result is…

Q: What is the most outer covering (made up of areolar connective tissue sheath) of a muscle fiber…

A: Answer: Nervous system : It is the body system that consists nerve cells, brain and stimuli. It is…

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: 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 type of muscle fiber arrangement is most appropriate for the shoulder muscle that leads to…

A: Introduction: The muscle is a contractile tissue responsible for the movements of the body. Muscles…

Q: Which of the following statements are true? (choose all that apply) The Z-disc is found in the…

A: The unit of the muscle is known as sarcomere that shows massive molecular events during muscle…

Q: Describe and explain the sliding filament model of contraction. Be sure to include in your response…

A: The fundamental contractile unit of muscle fiber is called a sarcomere. Actin and myosin, the two…

Q: Draw a graph of the isometric force–length relationshipof striated muscle, indicating where maximal…

A: Muscles are naturally elastic due to the presence of titin. Tendons attach skeletal muscles to…

Q: Which of the following regions of a sarcomere does not change length during a contraction because it…

A: Skeletal muscles are voluntary muscles. The contraction and relaxation in the skeletal muscle enable…

Q: the statements that are true about the structures in the image:

A: Q1. The true statements are:1. The sarcolemma is the specialized plasma membrane of a muscle cell.2.…

Q: C 5. State the structure and function of each of the following parts of a muscle fiber. (See pg. 13…

A: All the muscles in the body are contractile and mesodermal in origin. Muscles are classified into…

Q: Why is ATP required for skeletal muscle contraction? Choose all that apply. Release myosin and actin…

A: release myosin and actin and reset the myosin head Attaching ATP to the myosin head initiates the…

Q: Which of the following happens within the sarcomere during muscle contraction?     The myosin…

A: Answer :- Option (A) is correct. - The myosin filaments "walk" along the actin filaments…