8. Which muscle fiber type is always recruited first? A)Type IIa B)Type IIb C)Type I or type IIa, depending on the activity. D)Type IIx E)Type I

Q: Differentiate between white muscle fiber and red muscle fiber?

A: Step 1 Striated muscle consists of a large number of muscle fibers arranged in fasciculi and covered…

Q: Muscle relaxation occurs when ________. a. calcium ions are actively transported out of the…

A: The human body is a well built machine in which all the organs coordinate together to make it work.…

Q: 1. A motor unit is a functional unit formed by a neuron and all the muscle fibres it innervates. II.…

A: The spinal cord is the place where motor neurons are located. It is the site of interneurons and…

Q: What are red muscle fibers?

A: The muscular framework is an organ framework comprising of skeletal, smooth and cardiovascular…

Q: Even though calcium is removed from troponin and tropomyosin, please describe in detail what else…

A: The events that result in the contraction of human muscle fiber starts with the signal by a…

Q: Name the types of muscle contraction and briefly explain each.

A: The muscular system comprises of skeletal muscles, smooth muscles and tendons. This system plays an…

Q: What is the first and most direct energy source for muscle con￾traction? a. glucose b. ATP c.…

A: Answer- The muscle contraction is the crutial step in the movement and locomotion.

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: List three types of muscle cells?

A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…

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: Define muscle tone.

A: Muscle tone is defined as a tension in muscle when at rest.  It's a muscle response to the outside…

Q: What happens to the I band and H zone as muscle contracts? Do the lengths of the thick and thin…

A: Numerous bundles which make up the skeletal muscle are called fascicles and each of these is…

Q: What happens after action potentials are spread across the muscle cell into the T tubules?

A: Answer- The action potential is responsible for the muscle contraction in the body.

Q: Which of the following is the smallest: muscle fiber, thick filament, or myofibril? Which is…

A: Myofibrils are made up of small structures known as Myofilaments. There are basically two main kinds…

Q: What are the function of muscle fibre?

A: Muscle is a widely occurring soft tissue in most animals. Muscle cells contain actin and myosin…

Q: What factors influence smooth muscle contraction?

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

Q: Where are the nuclei of of muscle fibres located?

A: Muscle function: contraction for locomotion and skeletal movement contraction for propulsion…

Q: List three types of muscle?

A: Human muscle: Muscle is an important component of the human body to perform an action. It is…

Q: A skeletal muscle can be stimulated, under laboratory conditions, with a supramaximal stimulus. Is…

A: As the nervous system produces electrical stimuli called an action potential, it passes through a…

Q: What is muscle tone?

A: To answer this question we must have knowledge about physiology of our body.

Q: Describe the connective tissues and associated structural organization of a muscle?

A: Introduction: The four basic tissues that make up the human body are- epithelium, connective tissue,…

Q: How is muscle tone produced?

A: IT IS A TAUTNESS OR TENSION IN THE MUSCLE DUE TO WEAK,INVOLUNTARY CONTRACTIONS OF MOTOR UNIT.

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: How are single-unit and multi-unit smooth muscle different?

A: The term smooth muscle refers to a muscle of the human body that is part of an involuntary muscle…

Q: If a person exercises to achieve bigger muscles, what effort must be exerted and what actually…

A: Muscle hypertrophy: It refers to the increase in muscle cells due to excessive exercise. During…

Q: 1. What progressive muscle relaxation performed in Two scenarios shown in the picture?

A: Introduction:- Muscles is soft tissues. Many stretching fibers make up muscles.humna body's have…

Q: Explain how muscle tone is produced.?

A: The tension in the muscles at rest is called the muscle tone. It can be considered as the partial…

Q: Fast-twitch muscle fibers are also called type ________fibers and slow-twitch are called type…

A: There are two types of skeletal muscle fibers - fast twitch and slow twitch.  Fast twitch muscles…

Q: What Are the thick and thin filaments in muscle fibers that slide past each other called?

A: Thick filaments are composed of myosin proteins (myosin filaments) whereas thin filaments are…

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: All of the following characteristics apply to skeletal muscle except

A: Option (d) is right answer.  Because they do not contain intercalated discs.

Q: Distinguish between multiunit and visceral smooth muscle cells.

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: How does the muscle skeletal system function?

A: The musculoskeletal system is also known as the locomotar system is an essential organ system, which…

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: Why would a sprinter experience muscle fatigue before a marathon runner would?

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

Q: Why might stretching a cramping muscle INCREASE the cramping, as well as why would contracting the…

A: In the human body, the painful involuntary contraction of a muscle, as a result of dehydration,…

Q: Describe which muscle types have striated tissue? Which is fluid?

A: The soft tissues that make up muscles and allow them to contract are known as muscular tissues. They…

Q: Draw the structure of skeletal muscle tissue?

A: Skeletal muscle is an excitable, contractile tissue responsible for maintaining posture and moving…

Q: a) Describe how the isolated muscle behaved as it was stretched progressively. b) What effect…

A: The all-or-none principle asserts that the intensity of a nerve cell's or muscle fiber's reaction is…

Q: What is the energy utilization involved in causing a muscle to contract ?

A: Muscle contraction occurs when the actin and myosin filaments slide past each other. This process is…

Q: What are two observable differences in shape and size of nuclei of the muscle fibres compared to…

A: The nucleus is a central organelle of the cell, containing most of the cell's genetic material. It…

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.