Depolarization of the sarcolemma means ________.a. the inside of the membrane has become less negative as sodium ions accumulateb. the outside of the membrane has become less negative as sodium ions accumulatec. the inside of the membrane has become more negative as sodium ions accumulated. the sarcolemma has completely lost any electrical charge

Q: Smooth muscle has actin/myosin, why is it not striated? (consider what striation can provide). What…

A: Types of muscles There are three major types of muscles in humans. These are, Skeletal muscle…

Q: Match the following terms with the correct numbers Muscle cell's cytoplasm A. Epimysium Dense…

A: Cells are referred to as soft tissues present in organisms. These muscles help in the movement of…

Q: This question must be answered using knowledge from nervous communication.   Mary was accidentally…

A: Question -This question must be answered using knowledge from nervous communication. Mary was…

Q: Indicate if the statements are TRUE or FALSE. Statements TRUE FALSE Hematopoiesis would most likely…

A: Muscles are important part of body. Body has about 600 muscles forming up a muscular system. These…

Q: Which of these events occurs during the lag (latent) phase of musclecontraction?a. cross-bridge…

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

Q: Indicate if the statements are TRUE or FALSE. ________ 11. Actin is found only in the striated…

A: A muscle fiber is produced when numerous muscle cells fuses during the course of development. There…

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: 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: 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: Identify which muscle fiber types would be recruited for each of the following functions. Explain…

A: Muscle fibers  are composed of myofibrils that make up the skeletal muscles that involve in the…

Q: Column I Column II   Ca binds to calmodulin 1.           Elastic fibers that anchor thick…

A: COLUMN-I COLUMN-II 1 Z line  Elastic fibers that anchor thick filaments in place 2 actin and…

Q: In cardiac muscle, which ion serves both to depolarize the cells and as the essential link to…

A: correct amswer = b-Ca+ The shape of voltage-gated calcium channels changes as a muscle cell is…

Q: Motor neuron 4 Muscle fiber nucleus Myofibril of muscle fiber Figure 10.15. Details of the…

A: A neuromuscular junction is the region of chemical interaction between the axon terminal of neurons…

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: Richa lost two points on her anatomy exam because she couldn’t answer why one type of muscle fiber…

A: The reason why there is a difference in the color of muscle fiber is :Red muscle fiber: In red…

Q: When a(n) __________ moves along the sarcolemma, the membrane potential changes along the membrane…

A: The sarcolemma is the cell membrane of the muscle cells. When a muscle is stimulated by a neuron at…

Q: Which of the following is true concerning the role of Calcium in the contraction of muscle- cells?…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties and…

Q: Tendons are composed of ________connective tissue.a. skeletalb. areolarc. dense irregulard. yellow…

A: The connective tissue that connects a muscle to a bone is called a tendon. They are made up of…

Q: In the absence of _____, a contracted skeletal muscle will not relax but will develop rigor mortis…

A: Introduction After the death of an individual, several changes take place inside the dead body. The…

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: Smooth muscle

A: Smooth muscle:-  Is a type of tissue found in the wall of hollow organs such as the intestine,uterus…

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 action potential of skeletal muscle                 A. is not essential for contraction.…

A: Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control.

Q: In a fully conracted sarcomere, the H zone A. Is unchanged from a relaxed sarcomere B. Dissapears…

A: Sarcomere is the unit of muscle contraction and it is present in between the two adjacent Z-disc. It…

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: With muscular dystrophy, the membrane of muscle cells is destroyed. Given how muscle cells contract,…

A: Muscular dystrophy disease is comprised of thirty different genetic disorders causing progressive…

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: Action potential propagates along the sarcolemma and down the T-tubules to activate __________…

A: Voltage-sensitive T-tubule proteins are the series of proteins that control calcium release.…

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: 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: Necrotizing fasciitis is a serious bacterial infection. Necrosis is the death of tissues in the…

A: The death of tissues of the body is termed as necrosis. It occurs when the supply of blood to body…

Q: Cardiac muscle cells produce more force when _____.   A they have already shortened to less than…

A: Cardiac muscle is one of three types of vertebrate muscles, with the other two being skeletal and…

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: The cell membrane of a muscle fiber is called________.a. myofibrilb. sarcolemmac. sarcoplasmd.…

A: Muscle is a soft tissue which is found in most animals. They are helpful in providing movement and…

Q: place in correct order 1. ACH binds to receptors

A: The muscle contraction is explained via tha Sliding Filament Theory of Huxley ans Huxley.  It talks…

Q: A motor unit from a skeletal muscle contains 1500 muscle fibers. Would this muscle be involved in…

A: Introduction: Gross motor skill is the ability that has been acquired during adulthood and forms the…