atent phase V [ Choose ] Active return of Ca2+ into SR Ca2+ released from SR Power stroke of filaments Loss of muscle excitability

Q: Discuss about Myosin light-chain phosphorylation regulates smooth muscle contraction.

A: Smooth muscle is also known as visceral/ unstriped/ non striated or involuntary muscles.

Q: Neurons supplying smooth muscle secrete histamine display receptors only on the dendrites create…

A: Smooth muscle are cells that do not have striations. These muscles are present in the walls of…

Q: Both skeletal and (contractile) heart muscle cells A Have unstable resting membrane potentials B…

A: The skeletal muscles are the class muscles that are attached to the bones and are responsible for…

Q: Action potential ente from adjacent cell. 1 Ca2+ 2 K* 3 Na* Ca2+ ЕCF ATP NCX ICF 3 Na* RyR Ca2+…

A: The muscle contraction of myocardial cells is activated with the help of specific stimulus that…

Q: Why is the plateau phase important in cardiac muscle cells?

A: Answer- Cardiac muscle cell action potential is different from the skeletal muscle action…

Q: Describe the events by which depolarization of a smooth muscle cell results in contraction and…

A: Smooth muscle is a kind of muscle that is used by various systems to apply pressure on organs and…

Q: Discuss about Accessory proteins found in skeletal muscle.

A: The muscular system of the body is made up of three distinct type of muscle fibers that differ in…

Q: Some endocrine tumors secrete a hormone that leads to elevation of extracellular fluid Ca21…

A: Endocrine tumors can be described as the tumor which affects the organs which secrete chemical…

Q: Predict the consequence if presynaptic action potentials in an axonrelease insufficient…

A: Acetylcholine is an organic chemical that functions in the brain and body of many types of animals…

Q: List the four primary signal transduction pathways in skeletal muscle.

A: Signal transduction is defined as the ability of a cell to change behaviour in response to a…

Q: Describe the function and source of calcium ions in initiatingcontraction in skeletal muscle?

A: Introduction  Our body contains different types of ions such as Sodium, Potassium, Calcium, Chloride…

Q: What are Regulatory Molecules That Mediate ExerciseInduced Changes in Muscle?

A: Muscle is soft tissue and consists of protein filaments of myosin and actin. These filaments slide…

Q: What about extracellular Ca21 in excitation-contraction coupling?

A: Excitation–contraction coupling (ECC) is defined by the Alexander Sandow (1952). It defines as the…

Q: Discuss the metabolic pathways of ATP production in skeletal muscle in terms of timing, mechanism,…

A: Muscle ATP stores are limited, metabolic pathways must be triggered to keep ATP resynthesis rates at…

Q: Contrast the effect of phasic and sustained skeletal muscle contraction. Explain the importance of…

A: Skeletal muscles are one of the three chief types of muscles found in the muscular system of the…

Q: explain how muscle contraction works.  Start with depolarization of the motor endplate and work…

A: Muscle contraction can be referred to as the shortening of the sarcomeres. These sarcomeres are the…

Q: Mention the two main proteins of the skeletal muscle with their subdivisions

A: Skeletal muscle are made up of various tissues that are integrates. They consits of skeletal muscle…

Q: Compare the (i) contraction, (ii) excitation-contraction coupling in smooth muscle, cardiac and…

A: Introduction The muscular system is an organ system consisting of skeletal, smooth, and cardiac…

Q: High blood K+ concentrations cause depolarization of the restingmembrane potential. Predict and…

A: Potassium is an important electrolyte needed for various functions in the body like muscle movement…

Q: Differentiate between isovolumetric contraction phase and isovolumetric relaxation phase

A: A cardiac cycle includes all the events within the heart from the start of one heartbeat to the…

Q: List and describe the events that take place (and the structuresinvolved) between excitation of the…

A: Skeletal muscles require stimulus from motor neurons for contraction.

Q: Would a skeletal muscle fire an AP if a single quanta of ACh was secreted?  Why or why not?

A: Acetylcholine (ACh) is a neurotransmitter that is produced by motor neurons and binds to receptors…

Q: What accounts for the resting membrane potential seen inunstimulated nerve and muscle cells?

A: The transmission of the signals from one neuron to another neuron takes place with the help of a…

Q: Describe a cycle of cross-bridge cycling in skeletal muscle beginning with Ca2+  release from the…

A: Cross bridge formation is the binding process between the myofilaments of the muscle - actin, and…

Q: Provide a explantion and diagram of the  Intracellular mechanism of smooth muscle relaxation via…

A: Introduction:   Our body have different kinds of nervous system such as central nervous system…

Q: What is the major difference between smooth muscle and skeletal muscle regarding the relaxation…

A: Smooth muscles are involuntary muscles that line the internal organs. They lack sarcomeres and are…