Graph A in this diagram represents A) summation and tetanus of a smooth muscle fibre. C) a simple skeletal muscle twitch c) summation and tetanus of a skeletal muscle fibre. D)simple smooth muscle twitch.

Q: What is the gross anatomical arrangement of a skeletal muscle?

A: An entire skeletal muscle is viewed as an organ of the solid framework. Every organ or muscle…

Q: How and why does an ATP solution makes the muscle fiber contract and makes it length shorter? How…

A: Few important points to be kept in mind: Actin filament is made up of G-actins and it is act as…

Q: Among the following which one is NOT the location of smooth muscle cells?

A: As the name suggests, smooth muscle cells do not any striations. They are narrow spindle shaped…

Q: What unique characteristics of smooth muscle allow it to fulfill its functions? Explain.

A: Muscles are important tissues in the body. They have the ability to contract which allows movement.…

Q: What are the steps and ions involved in muscle contractions ?

A: Muscle contraction can be defined as the activation of tension generated sites within muscle fibers.…

Q: How is smooth muscle contraction similar to skeletal musclecontraction?

A: Smooth muscle fibers are generally found in the walls of various visceral organs except the heart,…

Q: Which of the following are aspects of the structure of skeletal muscle? Select all that apply.…

A: MUSCULAR TISSUE:- This tissue is different from the rest of the tissue as this tissue can contract…

Q: How can I describe skeletal muscle contraction using the words "upper motor neuron" and "lower motor…

A: Skeletal muscles represent one of the three types of muscles including smooth muscle and cardiac…

Q: What are some of the properties of smooth muscle?

A: Smooth muscles are found in the walls of the hollow organs and the passage ways. It consists of…

Q: Explain the difference between a single muscle fiber contraction and a skeletal muscle contraction…

A: When an Action Potential travels along the Nerves to the Muscles, a Muscle Contraction is triggered.…

Q: What is single-unit smooth muscle?

A: Muscles are required in breathing, talking, running, walking, and anybody movement. Actin and…

Q: What is the function of myosin light-chain kinase in smooth muscle?

A: The muscular framework is an organ framework comprising of skeletal, smooth and heart muscles. It…

Q: What cellular changes could cause the skeletal muscle to become rigid?

A: Skeletal muscle cells do not relax or remain in a rigid state due to lack of ATP and so muscle…

Q: What do smooth muscle plasma membranes contain?

A: BASIC INFORMATION  MUSCLE It is a type of soft tissue which are found in most of the animals. The…

Q: How is the contraction of smooth muscle regulated?

A: Muscle is the bundle of soft tissues present in the human body. Muscle attachment with the bony…

Q: What are the basic structural differences between skeletal,cardiac, and smooth muscle?

A: A cell is a structural and functional unit of life. The structure and function of a cell have been…

Q: What factors influence smooth muscle contraction?

A: Smooth muscle contraction  depend on  influx of impulse, smooth muscle contraction caused by the…

Q: What are the Regulatory Molecules that mediate exercise-induced changes in muscle?

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

Q: Compare the inner layer of smooth muscle with circumferentially running muscle cells,to the outer…

A: Internal soft organs have visceral smooth muscle in their walls (viscera). Muscle cells are joined…

Q: What are the muscle-spindle stretch receptors?

A: The musculoskeletal system of a body allows the locomotion of different parts of the body. The…

Q: Why does Skeletal muscle cells contain more mitochondria than other organelles?

A: A skeletal muscle cell is a multinucleate syncytium that forms by the fusion of hundreds of myoblast…

Q: What effect does increasing the frequency of action potentials in askeletal muscle fiber have upon…

A: With alternative arrangements of light and dark band, skeletal muscles are striated muscles. They…

Q: What are multi-unit smooth muscle cells?

A: Smooth muscles are non-striated and present in the posterior part of the esophagus, stomach,…

Q: Give the diagram of a sarcomere of skeletal muscle showing different regions?

A: Skeletal muscles are made up of muscle cells. A sarcomere is the unit of the striated muscle tissue…

Q: •What is the role of tropomyosin in muscle contraction?

A: Tropomyosin prevent myosin from continuing to slide up the actin filament.

Q: Diagram the arrangement of thick and thin filaments in a striated-muscle sarcomere, and label the…

A: While muscle contracts the I (isotropic) band  and H band shortens .Tge length of each sarcomere of…

Q: Why is the innervation of single-unit smooth muscle often restricted to only a few cells in the…

A: Smooth muscle (also known as visceral muscle because of where it is found) is one of the three major…

Q: How is smooth muscle contraction affected by the drugs called calcium channel blockers?

A: Calcium ions move in and out of the cell with the help of calcium channels that present in cardiac…

Q: What are the three sources of ATP produced during muscle contraction?

A: Muscle contraction is the response of muscle towards nerve impulse. When stimulus is received,…

Q: What are the five primary functions of skeletal muscle?

A: Muscle is a soft tissue in the body which primarily functions as source of power. Muscles cells…

Q: What is the fundamental contractile unit of skeletal muscle? b. What are the names of the bands,…

A: Muscle contraction occurs when sarcomeres shorten, as thick and thin filaments slide past each…

Q: What is the micro anatomical arrangement of a skeletal muscle fiber cell?

A: Muscle is a soft and contractile tissue that is responsible for body movement. Muscle cells consist…

Q: How does the structure of the microfilaments allow for linear contraction of a whole muscle cells?

A: Microfilaments are little, string like protein fibres with a diameter of 3-6 nm. They are mostly…

Q: What factors are responsible for the amount of tension a skeletal muscle develops?

A: The muscular system, composed of tissues, capable of changing their shape, is responsible for…

Q: Define the kinetic properties of the flight muscle ?

A: A wing (flight) muscle is among the muscles that is employed in flying. Classification  Direct…

Q: why does a rapid series of muscle twitches yield a stronger overall contraction than a single…

A: Muscle contraction that results from a single action potential is called a twitch. When there is a…

Q: What creates the striated appearance of a skeletal muscle cells?

A: Muscle tissue can be divided into three major types as cardiac muscles, smooth muscles, and skeletal…

Q: While the sarcoplasmic reticulum of muscle was first described by nineteenth-century microscopists,…

A: The structure of the sarcoplasmic reticulum is a little different from the normal endoplasmic…

Q: How is a muscle cell excited and why does it lead to a contraction in the muscle?

A: Excitation for Muscle Contraction:  ∙ Nerve impulse advances arrival of Neurotransmitter…

Q: What causes increases rate of contraction?

A: The heart and blood vessels are the main organs of the cardiovascular system. The heart, which is…

Q: What is the effect of centrally acting skeletal muscle relaxants on the body, and what safety…

A: Skeletal muscle relaxant are the drugs which are used for the treatment of muscle spasm.   These…

Q: What are the five major functions of skeletal muscle?

A: The muscle is the tissue of the body that works as a wellspring of force. The impulse from nerve…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.