if, in a laboratory, a skeletal muscle cell receives a single stimulus to contract, it produces a single muscle twitch.  If we quickly fire another stimulus for the muscle to contract, prior to the muscle fully relaxing, then we have a condition of:   A. seizure   B. none of the above   C. complete tetanus   D. temporal summation   E. relaxation

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: The Sarcomere 2 Thin filaments are often named for which protein? a. actin b. myosin c. troponin d.…

A: The sarcomere is the smallest functional unit of a skeletal muscle fiber. It is a highly organized…

Q: Muscle Fiber Recruitment As intensity increases, in which order are fibers recruited? a. type llx,…

A: Human skeletal muscle is composed of a different collection of muscle fiber types. This range of…

Q: If a tendon runs longitudinally throughout a muscle and fascicles insert obliquely on it along both…

A: At the most basic level, all organisms are made up of cells. In multicellular organisms, these cells…

Q: When we increased the frequency, why could we see an in increase in the force of contraction? Is it…

A: An action potential can be defined as a rapid increase and decrease in the membrane potential of the…

Q: Several snake venoms contain toxins which blocks acetylcholine receptors at the neuromuscular…

A: The neuromuscular system includes all the muscles in the body and the nerves that are required to…

Q: 1. muscle contraction Skeletal muscle contraction is initiated by _______________________ motor…

A: When there is an activation in the tension generating sites in the muscle fibers then it is known as…

Q: At low intracellular Ca2+ concentration, _________________ the active sites on the thin actin…

A: Muscular system is one of the body system which aids in contraction and relaxation of muscle so that…

Q: To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm…

A: Ans - the correct answer for the above question is- A) Different motor units were contracting while…

Q: The release of which of the following minerals from muscle cell storage sites stimulates muscle…

A: Sarcoma muscles store calcium in sarcoplasmic reticulum. It gets released when a muscle cell or…

Q: While initial control of skeletal muscles occurs with the motor cortex, a successful movement also…

A: The motor movements required coordination of central nervous system that controls the muscle…

Q: The figure below shows the muscle tension (Y axis) following the application of stimuli to the…

A: The muscular tension (Y axis) after applying stimuli to the muscle fibre is depicted in the picture…

Q: A skeletal muscle motor unit   A.Is the number of muscle cells innervated by one motor neuron. B.Is…

A: The skeletal system consists of bones and muscle fibres. These muscle fibres help in contracting and…

Q: In general, fast-twitch fibers generate less power than slow-twitch fibers. A. True B. False

A: People have two general types of skeletal muscle fibers: slow-twitch (type I) and fast-twitch (type…

Q: The size of a motor unit (i.e., the # of muscle fibers innervated) can directly influence which of…

A: Motor unit This unit constitutes a motor neuron and all of the skeletal muscle fibers innervated by…

Q: When sarcomeres contract during muscle contraction, which of the following occurs?   A. The myosin…

A: Sarcomeres contract during muscle contraction.

Q: The drug Botox prevents wrinkles by preventing muscles from contracting. Specifically, it prevents…

A: Botulinum toxin is a neurotoxic protein produced by the bacterium Clostridium botulinum.

Q: A 54-year-old patient diagnosed with toxic fume exposure presents with symptoms affecting the…

A: The situation depicted includes a patient who has been exposed to toxic exhaust, which is…

Q: The firmness of rigor mortis ___.     A. can be reduced by manipulation of the affected muscles and…

A: Normally the muscles of the body remain in the contracted state until ATP binds to myosin, releasing…

Q: All muscles attach to bone or connective tissue at no fewer than two points including an origin and…

A: -Muscle contraction can be described as the process of shortening, tightening or lengthening of…

Q: What do we mean by the somatic motor system? O a. Cardiac muscle O b. The smooth muscles and glands…

A: Introduction :  The group of central and peripheral nervous system elements that support motor…

Q: You cut the axon of a single motor neuron innervating the biceps muscle. Which of the following is…

A: Motor neurons, often referred to as efferent neurons are the type of neurons responsible for…

Q: Muscle contractions where the muscle shortens but tension remains constant are called A. isometric…

A: Muscular system is a type of body system in which regular contraction as well as relaxation leads to…

Q: Increased frequency of stimulation resulting in increased tension in a motor unit is A. recruitment…

A: Introduction:- Motor unit activation is the stimulation of further motor units in order to enhance…

Q: When the length of the muscle stays the same but the force increases during contraction it is…

A: The muscular system of the body is made up of three distinct types of muscle fibers which differ…

Q: the troponin/tropomyosin complex will inhibit the crossbridges of myosin from with actin. this is…

A: The mechanism of contraction of skeleton muscle was based explain through "sliding filament theory"…

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.