To stimulate muscle contraction, acetylcholine is released from the into the synaptic cleft. a. junctional folds b. sarcolemma c. synaptic knob d. terminal cisterna e. sarcoplasmic reticulum

Q: The cross bridges of the sarcomere in skeletal muscle are made up of                 A. myelin.…

A: Introduction:-  Muscles are delicate tissue present in most animals . These contain filaments like…

Q: Delayed onset muscle soreness (DOMS) is most closely associated with which type of muscle actio a.…

A: It is experienced by many and characterized by pain and stiffness in muscle.

Q: Which of the following statements about the Ca2+ release channels in the sarcoplasmic reticulum is…

A: The right answer is option b) They are one-tenth the size of the voltage-gated Ca 2+channels. The…

Q: Stimulation of a muscle fiber by a motor neuron occurs ata. the neuromuscular junction.b. the…

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: Which of these is the proper sequence of these events of muscle contraction 1) Action potential…

A: Based on option, the correct order is 1, 3, 4 and 2. Steps in initiating contraction: Whenever…

Q: Which of the following statements is True?a. Tendons contract using the sliding filament…

A: The muscular-skeletal system made up of tendons, ligaments, bones, muscles of various types. The…

Q: The function of Ca2+ in skeletal muscle contraction is toa. cause an allosteric change in myosin so…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: Which of these increases the least as a result of muscle hypertrophy?a. number of sarcomeres d.…

A: Muscle hypertrophy means increase in the size and strength of the muscles. This in turn results in…

Q: The biggest force of contraction can be produced by: Select one: a. SO fibers b. FOG fibers c. FG…

A: Invertebrates, there are two types of skeletal muscles: red and white muscles. Red muscles are red…

Q: While initial control of skeletal muscles occurs with the motor cortex, a successful movement also…

A: The motor movements required coordination of central nervous system that controls the muscle…

Q: . Before a muscle fiber can contract, ATPmust bind toa. a Z disc.b. the myosin head.c.…

A: Muscle contraction is the process of increase in the tension of muscle fibers or decrease in the…

Q: Which of the following is true?   A. Muscle fibers either will contract with all the force…

A: Introduction: Muscles are the soft tissues present in all mammals. The muscle cells comprise protein…

Q: Considering the force of contraction of a skeletal muscle fiber,wave summation occurs because ofa.…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

Q: The plasma membrane of a skeletal muscle fiber is called thea. sarcoplasmic reticulum.b.…

A: Skeletal muscles are involved in movement. Contraction of skeletal muscles makes movement possible.…

Q: Muscle tone is: a. the result of voluntary shortening of the muscle. b. the result of a small amount…

A: Muscle tone is define as the contraction of muscle at rest Conditions

Q: The decrease in active force that occurs at lengths longer than the optimal length is caused by: O…

A: According to the question, the decrease in active force that occurs at lengths longer than the…

Q: In a skeletal muscle fiber, Ca2+ is released from a. ACh receptors. b. the motor end plate. c. the…

A: Skeletal muscle mainly attaches to the skeletal system via tendons to maintain posture and control…

Q: Which of the following does NOT contribute to muscle fatigue? A. K+ accumulation B. ADP and…

A: Introduction Muscle fatigue is a condition in which muscles loses the ability to perform overtime.…

Q: The size of a motor unit (i.e., the # of muscle fibers innervated) can directly influence which of…

A: Motor unit This unit constitutes a motor neuron and all of the skeletal muscle fibers innervated by…

Q: if, in a laboratory, a skeletal muscle cell receives a single stimulus to contract, it produces a…

A: As per our honor code, we are authorized to answer only one question at a moment. So, we are…

Q: The series-elastic component of muscle contraction is responsible for a.increased muscle shortening…

A: Muscle is a delicate tissue found in many creatures, and is one of the four fundamental creature…

Q: According to the sliding filament model, when muscles contract,a. sarcomeres shorten.b. myosin heads…

A: Answer is option e.

Q: The greater the number of _________  involved in a motor unit, the ________ the degree of fine…

A: Muscle fibres control the physical forces within the body. They help facilitate the movement of…

Q: The constant state of partial contraction of muscles is called a. muscle atrophy. b. muscle tone. c.…

A: Introduction: Muscle is a contractile tissue responsible for bringing out the movements. Muscles are…

Q: The part of the sarcolemma that invaginates into the interior of skeletal muscle fibers is thea. T…

A: Each skeletal muscle is made of integrated tissues. It functions voluntarily and involves skeletal…

Q: Match each description to the correct phase of a muscle twitch 73. Sección Ca2+ transported back…

A: Muscle contraction happens when the slender actin and thick myosin fibers slide past one another. It…

Q: The actual contractile units of muscle, called _____, extend from middle of one _____ to middle of…

A: Muscles are referred to as the soft tissue of the body, contraction, and relaxation of the muscle is…

Q: A. nerve cell releases neurotransmitter which stimulates the muscle cell: B. calcium is released…

A: Muscle contraction is a complex physiological process that involves the interaction of various…

Q: During muscle contraction, binding sites for myosin are uncovered by the movement of A. Tropomysin…

A: A. Tropomyosin   During muscle contraction, the binding sites for myosin on the actin filament are…

Q: Which of these statements concerning aging and skeletal muscle iscorrect?a. A loss of muscle fibers…

A: Skeletal muscles are attached to bones and long, cylindrical, striated fibers with many peripherally…

Q: Compared with skeletal muscle, visceral smooth muscle a. has the same ability to be stretched. b.…

A: We can say that Smooth muscles are involuntary in action. The walls of hollow organs, including the…

Q: When the length of the muscle stays the same but the force increases during contraction it is…

A: The muscular system of the body is made up of three distinct types of muscle fibers which differ…

Q: which of the following statement is true?  a. Fast fibers have difficulty fatiguing  b. Fast…

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

Q: the troponin/tropomyosin complex will inhibit the crossbridges of myosin from with actin. this is…

A: The mechanism of contraction of skeleton muscle was based explain through "sliding filament theory"…

Q: Muscles contract by the interaction of A. myofilaments  B. myofibers  C. sarcomeres  D.…

A: The muscle is a group of tissue which perform the function of movement of body. That's why muscle is…