33. Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone B. White fibers make up fast-twitch muscle C. Muscle spindle is a type of receptor that detects muscle length D. Exocrine gland secretes its product directly into the bloodstream E. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stinulated to contract

Q: 3) List and define the organizational structure of skeletal muscle beginning with the sacrcomere up…

A: Skeletal muscles make up the most part of our muscles. They account for around 30 to 40 percent of…

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: The mechanism of muscle contraction is best explained by the sliding filament model. According to…

A: Many different forms of cell motions are caused by actin filaments, which are often linked to…

Q: Identify the longest muscles in the body and outline the two major joint it crosses 2. In terms of…

A: The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in…

Q: 7. A severe laceration to a wrist completely severed a major muscle tendon. To suture the ends of…

A: The tension or force applied to a muscle when it is stretched without any active contraction is…

Q: 35- which of the following is least likely to be a feature for brief- movement muscle: A.…

A: During muscle movement/contraction, CNS send signal through motor neurone which releases Ach at…

Q: What role (function) does calcium have within a muscle fiber? a. trigger muscle potentials along…

A: Calcium is present in the sarcoplasmic reticulum until and unless it is released by the stimulus. It…

Q: Which region of the sarcomere does not change length between muscle relaxation and muscle…

A: Muscle is a kind of tissue as it is made up of group of cells. It is one of the four kind of primary…

Q: 8. Assuming two skeletal muscle fibers have the same myosin ATPase activity, and both are producing…

A: Isotonic contraction :- During isotonic contraction of muscle, same tension maintained while the…

Q: Which of the following statements about the connective sheath of skeletal muscle is false? a. the…

A: Muscle system is one of body system  which concerned with the contraction and relaxation of muscle…

Q: Which of these is the proper sequence of these events of muscle contraction 1) Action potential…

A: Based on option, the correct order is 1, 3, 4 and 2. Steps in initiating contraction: Whenever…

Q: During muscle isometric tension, the maximum tension occurs when: O a. There is no overlapping…

A: Isometric contraction occurs when muscle length remains relatively constant as tension is produced.…

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: During muscle contraction, calicum ions bind to A. Actin Filaments B. Tropomyosin C. Troponin D.…

A: C. Troponin   During muscle contraction, calcium ions bind to the regulatory protein troponin, which…

Q: Which of the following choices is CORRECT? A Myofibrils extend the length of a muscle fibre B.…

A: In muscles the sarcomer is termed as the fundamental unit. The sarcomer helps in the contraction.…

Q: Which of the following statements about the microscopic structure of smooth muscle fibers is…

A: Muscles have a vital role in the body. Muscles do a lot for our bodies as well. They circulate blood…

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: What event causes a troponin-tropomyosin complex to regain its original shape in muscle relaxation?…

A: Muscle contraction is the activation and formation of tension sites with muscle fibres, while muscle…

Q: a. Individual organ a. myofibril b. An individual cel b. muscle c. A bundle of proteins c. fascicle…

A: Introduction: Skeletal muscles are voluntary muscles as their relaxation and contraction are under…

Q: Considering the force of contraction of a skeletal muscle fiber,wave summation occurs because ofa.…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

Q: 21. Summarize the events that occur during the Excluation-Contraction Coupling Phase in a skeletal…

A: Neurons are the cellular components of the nervous system that help in nerve impulse transmission.…

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: Which of these statements below would NOT BE TRUE regarding skeletal muscle activity? O most muscles…

A: Skeletal muscles are the voluntary muscles which works with the will of a person. These muscles are…

Q: Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone B.…

A: Among the given statements, the final statement seems incomplete. So I am providing solution…

Q: What happens in a muscle twitch? a. Myosin grabs a thick myofilament. b. Sarcomeres shorten during…

A: Muscle twitches can occur for heaps of reasons like stress, an excess of caffeine, a horrible eating…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Activation…

A: The membrane potential on the T-tubule membrane is sensed by a protein called the dihydropyridine…

Q: Fast oxidative glycolytic fibers in skeletal muscle are used Select one: O a. intermittently, for…

A: "Muscles" perform various functions as movement, which is the fundamental purpose of muscles is to…

Q: if, in a laboratory, a skeletal muscle cell receives a single stimulus to contract, it produces a…

A: As per our honor code, we are authorized to answer only one question at a moment. So, we are…

Q: Which of the following is arranged in order from smallest tolargest?a. Motor unit < sarcomere…

A: When a nerve impulse travel to the muscle contraction that is an action potential causes the muscles…

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: During muscle contraction, the I band a. hides the H zone. b. shortens or narrows. c. overlaps the Z…

A: SARCOMERE It is the complicated unit of striated muscle tissue. It is the repeating unit between two…

Q: The best way to maintain optimum skeletal alignment and reduce risk of joint injury is to... A -…

A: Fitness is a very important criteria to maintain the health of the joint and for fitness good…

Q: Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the…

A: The lighter, thinner stripes noted under the microscope are actin. Under a microscope, the thick and…

Q: Put the following in order to accurately follow the sequence of events associated with muscle fiber…

A: Relaxing of muscle filaments starts with the motor neuron, which stop delivering its compound sign,…

Q: Which of the following statements about the connective sheath of skeletal muscle is true? a. the…

A: Muscles are responsible for providing the movement to the body. It also releases heat.

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.