Muscle contraction results from interactions between thin filaments, composed mainly of the protein________ , and thick filaments, composed mainly of the protein______. The “heads” of the thick filament protein grab on to the thin filament protein and flex. The energy of_______ is used to extend the head, which stores that energy to power the flexing movement of the head, pulling the thin filament past the thick filament.

Q: /hich statement about muscle contractions is INCORRECT ? Once maximum muscle tension is achieved, no…

A: Muscle contraction occurs when actin and myosin slide past each other. The required calcium for…

Q: In tonic smooth muscle that contracts continuously for long periods, the highly efficient "latch…

A: Smooth muscles are unstriated and involuntary muscles. They are present in viscera such as GIT,…

Q: In the sliding filament model of muscle contraction, I bands contain     sacrcomeres.     thin…

A: The cytoskeletal proteins including actin filament or microfilament, microtubules and intermediate…

Q: Why is muscle 1 more powerful than muscle 43

A: The shape of the force-velocity (F-V) relationship affects many aspects of muscle physiology,…

Q: Calculate initial population size

A: Initial pulation size can be calculated from, age specific survivorship life table. In the given…

Q: What does the integrated curve (in BIOPAC) represents ?

A: BIOPAC  is a digital platform used for teaching student, specifically developed for secondary…

Q: Which is the order of glycolytic capacity between these muscle fiber types O I> lla > Ilx O Ix > la…

A: The contraction of the muscle fibre is explained by the muscle contraction theory by the 2 muscle…

Q: In relaxed muscle, the myosin-binding site on adin is blocked by ?

A: Step 1 Contractile elements of muscle fibre are myofibrils. They are made up of contractile units…

Q: Discuss the All or None Law of Muscle contraction.

A: The tightening, decreasing, or lengthening of muscles during an activity is known as muscular…

Q: Hill's equation gives a relation between muscle contraction rates νν and muscle tension TT…

A: We have to rewrite the equation in a form to show that T is dependent on v including T0, alpha and…

Q: Discuss about Ca2+-dependent thin-filament regulation of skel-etal muscle contraction.

A: Movement of skeletal muscle in mammalians show large variability in its functions with their…

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: Explain how ATP and creatine phosphate function inskeletal muscle fiber contraction.

A: The process of contraction of muscle fiber occurs in a series of events, that initiates with the…

Q: Know the Sliding Filament Theory & neurological events leading up to contraction. (i.e. from the…

A: The level of calcium ions in the cytoplasm is controlled by muscle contraction. Calcium ions work at…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: Skeletal muscle will be released in its contracted (rigor) state when: Group of answer choices ATP…

A: Please note that the correct statement for the question should be "Skeletal muscle will be released…

Q: distance runners. All of tl igher concentration of gl

A: Elite sprinters make use of type II fibers more than other muscle fibers and are fast glycolytic…

Q: I= band at the time of relaxation H= zone at the time of relaxation Sacomere at the time of…

A: During the muscle cell contraction, the sarcomere must shorten. However, thick and thin filaments…

Q: In your own words describe how acetylcholine ,calcium,and ATP are involved in the process of muscle…

A: Muscle contraction is a process where tension-generating sites in the muscles fibers are activated…

Q: What structures/s is/are responsible for the banding pattern in skeletal muscle cells? (EXPLAIN)…

A: Striated muscles are generally voluntary muscles that are under the conscious control of brain.…

Q: Put the following statments describing the skeletal muscle contraction pathway in the correct order:…

A: The signal for the muscle contraction is sent to the motor neuron from the brain or the spinal cord.…

Q: describe the physiological properties that all muscletypes have in common;

A: Muscles are classified into various types based on their structures, locations, and ability.

Q: Explain how the sliding filament model is responsible for muscle contraction.

A: Muscle contraction can be defined as the phenomenon in which shortening of the muscle occurs that…

Q: Briefly describe why contraction of the muscle cell is called “sliding filament theory” (what is…

A: During skeletal muscle contraction, a motor neuron stimulates the skeletal muscle fibers. The…

Q: A muscle has a limit to how much it can contract, based on the limit of contraction of each…

A: The study of the human body can be divided into anatomy and physiology. The anatomy studies about…

Q: List TWO (2) differences between smooth muscle contraction and skeletal muscle contraction.

A: Muscle cells are intended to produce power and movement. There are three kinds of mammalian muscles…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…

Q: Based on your understanding of skeletal muscle fiber physiology, which of the following processes is…

A: ATP is the adenine tri phosphate and is the instant source of energy .It is used in many of the…

Q: Describe and explain the sliding filament model of contraction. Be sure to include in your response…

A: Muscle contraction is defined as the tightening, shortening, or lengthening of muscles during an…

Q: While Colette is researching weight lifting techniques, she finds contradictory information about…

A: Skeletal muscle cells are long and cylindrical, voluntary in action and are referred to as muscle…

Q: The following are the basic steps of a muscle contraction:               I.  Neurotransmitters bind…

A: Muscle tissue is responsible for movement. There are found three types of muscles: Skeletal,…

Q: We control muscle force using motor unit recruitment. When we recruit more motor units, what is…

A: The process of activating different motor units to achieve a specific level and kind of muscular…

Q: Order the following steps of muscle contraction: Drag and drop options into correct order and…

A: The action potential is initiated and propagated through the motor neurons to finally reach the…

Q: Thick myofilaments contain which of the following? (Select all that apply) troponin actin myosin…

A: Myofilaments are key regulators of the contraction in cardiac and skeletal muscles. The thick-thin…

Q: active muscle tension begins at approximately one hundred percent of resting length for a muscle…

A: Muscle tension is the condition where muscles of the body remain semi-contracted for a lengthy…

Q: The ________ opposes or resist, the action  caused by the prime mover Antagonist  Prime mover…

A: Muscles contract to produce movements and motion. Muscle always works in pair.

Q: After learning about muscle fiber types in his anatomy and physiology class, Alex started to notice…

A: The skeletal muscles of the organism assist them in performing voluntary movements. In Turkey's…

Q: Arrange the steps of muscle innervation and contraction in response to touching a hot plate.…

A: Sensory neurons(afferent neurons) are defined as the type of nerve cells where they get activated…

Q: The events during the leg phase of a muscle fiber twitch begin with................ and end…

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

Q: Which row below completes the following statement? "The skeletal muscle fibres that are most likely…

A: The types of muscles composed of bundles of single muscle fibers are known as skeletal muscles. The…

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.