Explain what is happening at the level of individual sarcomeres whena person is using his or her biceps brachii muscle to hold a weight ina constant position. Contrast this with what is happening at the levelof individual sarcomeres when a person lowers the weight, as well aswhen he or she raises the weight.

Q: insufficiency

A: Muscle is a type of contractile tissue that is organised into coordinated systems for greater…

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: Describe an everyday activity not involving the arms thatwould involve concentric contraction and…

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

Q: What best explains the inability to fully contract a muscle when the muscle is first shortened prior…

A: Muscle contains muscle fiber cells which are specialized for contraction. The muscle movement is a…

Q: the muscle that is "mainly" responsible for a movement is called the? the muscle that acts in…

A: It is a bundle of fibrous tissues produce motion and force in human body and helps in maintaining…

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: A patient is lifting a dumbbell from waist height to shoulder height, bending the elbow. What form…

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

Q: of his parent's house over the weekend. On Monday, he arrived at the clinic ainful back spasms. He…

A: A back spasm is involuntary tensing or contraction of the muscle in lower back. This condition…

Q: Consider only the effect of the brachioradialis muscle for these questions: If a weight is held in…

A: Levers may be used to move a much higher weight with a small force. Bones serve as lifting arms…

Q: Two lifter's knees are of interest at a specific moment in their lifts. In both lifts, the knee…

A: Patellofemoral joint consist of posterior patella and anterior femur. It is a diarthrodial plane…

Q: If the number of active cross bridges in skeletal muscle begins to decline although the rate of…

A: Option A: Fatigue

Q: Know the Sliding Filament Theory & neurological events leading up to contraction. (i.e. from the…

A: The level of calcium ions in the cytoplasm is controlled by muscle contraction. Calcium ions work at…

Q: Compare the force produced by a muscle over timewhen it is stimulated by a single twitch stimulus…

A: Muscle strength formation refers to the mechanism in which the skeletal muscle transforms metabolic…

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: Which of the following is not a role of the muscular system inhomeostasis in the body?a. produce…

A: The muscular and skeletal system work together to allow movements in the body for the maintenance of…

Q: Distinguish between a synergist, antagonist, and fixator. Explain how each of these may affect the…

A: The role of the muscle is to produce the movement smooth and effective.

Q: During sarcomere contraction, Select one: Oa. Calcium, troponin Ob. Calcium, microfilaments O c.…

A: The answer is option A- calcium, troponin

Q: Which of the following is in the correct order of largest to smallest O Muscle, bundle of…

A: The muscular system is a part of the cytoskeletal system, which is responsible for the movements…

Q: What change does ACh cause in an ACh receptor? Howdoes this electrically affect the muscle fiber?

A: ACh stand of acetylcholine receptor and it binds to ACh receptor. After binding it open the Na+ gate…

Q: Which of the following are true regarding length/tension relationships in muscle?

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

Q: After learning about muscle fiber types in his anatomy and physiology class, Alex started to notice…

A: The skeletal muscles of the organism assist them in performing voluntary movements. In Turkey's…

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: 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: Explain the movement of ions into, out of, and within the muscle fber after Acetylcholine (ACh)…

A: The sarcolemma is the plasma membrane of the muscle cell that is surrounded by a basement membrane…

Q: Describe how muscle attachments are organized to worktogether for movement of an arm or movement of…

A: The muscular system is made up of specialized tissues called muscle fibers. These muscle fibers…

Q: a) Describe why the first steps for a low force contraction in both muscles are smaller than the…

A: Muscle spindles These are defined as stretch detectors that have the ability to detect how much and…

Q: Describe the sequence of events involved in myosincross-bridge attachment and detachment. Relate…

A: In physiology, myosin is defined as the protein that binds and attach with actin protein on the…

Q: Describe the organization of a motor unit in vertebrate skeletalmuscle, and explain how recruitment…

A: Skeletal muscles are attached to bones by tendons, and they produce All the movements of body parts…

Q: In which of the following locations would you most likely find the tissue known as perimysium?…

A: Skeletal muscle is responsible for movement of various parts of the body and locomotion. These…

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: What type of contraction  of the hamstring muscles would occur during flexion of the leg and then…

A: The skeletal muscles are one of the three types of muscles found in the human body. These muscles…

Q: Two skeletal muscles A and B contain 1000 and 200 individual muscle fibers respectively. Muscle A…

A: We must consider the number of motor units and the number of muscle fibres per motor unit to…

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: The disease poliomyelitis (po′le-o-mi′˘e-li′tis) destroys motor neurons, causingloss of muscle…

A: Poliomyelitis is caused by a virus that may cause paralysis in the person. Poliomyelitis can be…

Q: Which of the following would NOT occur as a result of regular exercise to a specific muscle group…

A: The exercising involves the training of muscles by putting heavy load on them, due to exercising 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: 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: Identify the type of muscle contraction involved in the jump and describe the movement patterns of…

A: Verticle jumping is a plyometric exercise that involves exertion of maximum force for a short time.…

Q: The functional unit of a muscle fiber is the, a segment from one Z disc to thenext.a. myofibrilb. I…

A: Z-discs (Z-disk, Z-line, Z-band) are the smallest functional units in striated muscle, defining the…