A motor neuron, plus the muscle fibers to which it attaches, constitutes a functional unit called a _____. A. motor unit B. myograph C. syncytium D. treppe

Q: What do you mean by muscle bundles?

A: Muscle is considered as an organ of the muscular system and each muscle comprises of muscle tissue,…

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: Name three differences between slow-twitch and fast-twitch muscle fibers.

A: A sudden and quick movement of muscles or rather, contraction of muscles is referred to as Twitch.…

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: f a muscle cell had very short T-tubules, how much tension would the muscle fiber create, relative…

A: T tubules or the transverse tubules are the extensions of the cell membrane that penetrate into the…

Q: Why might multiple, small motor units be advantageous over a single large motor unit?   A. They…

A: Motor units participate in regulation of movement of muscle fibers.

Q: When a higher voltage is applied to the skeletal muscle, the force of contraction _____ and…

A: Skeletal muscle fibres has the ability to cause muscle contraction if it encounters an appropriate…

Q: Single-unit smooth muscle cells can stimulate each other because they have:|- a. pacemakers. b.…

A: Smooth muscles are involuntary in nature and non-striated muscle cell which lines the inner side of…

Q: Why is the latent period longer during an isotonic twitch of a skeletalmuscle fiber than it is…

A: Muscle tissue is a well-vascularized soft tissue present in the muscles of an animal body. Muscle…

Q: Through which ATP-generating mechanism can long-lasting muscle contractions be sustained? a.…

A: Introduction :- Muscle contractions are defined by changes in the length of the muscle during…

Q: Why does a person with muscles that have a higher percentage of slow fibers have greater endurance…

A: In humans muscles constitute about 40 to 50 percent of the total body weight. These muscles are…

Q: Motor neurons release what type of neurotransmitter onto the motor end plate of skeletal muscles?…

A: Motor neurons of the spinal rope are essential for the central nervous system (CNS) and interface…

Q: Why is it important to remove acetylcholine from its binding to acetylcholine receptors once the…

A: Neurotransmitters can serve as chemical messengers for ion channels, neurotransmitter mainly causes…

Q: a. Describe the relationship between stimulus voltage and the force of contraction b. What was the…

A: The threshold stimulus voltage is found by varying the stimulus voltage slightly to discover the…

Q: Single-unit smooth muscle cells can stimulate each other because they havea. a latch-bridge.b.…

A: The myocyte is also known as a muscle cell or the type of cell found in some types of muscle tissue.…

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: Which statement is accurate about an agonist? a. It opposes the function of the prime mover. b. It…

A: The majority of the animals consist of soft tissue called muscles. They are responsible for…

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: Explain Why is muscle that has sustained significant damage unable to produce the same amount of…

A: Muscle cells are cells that contract to help in movement. Voluntary movement is controlled by…

Q: If the blood flow to a skeletal muscle were markedly decreased, which types of motor units would…

A: Introduction: Small arteries and arterioles form the microcirculation unit and are innervated…

Q: The muscles of a professional sprinter are most likely to have ________.a. 80 percent fast-twitch…

A: Skeletal muscles can be grouped into fast and slow fibers based on how quickly they can contract and…

Q: Describe the roles of ATP in the sliding filament mechanism of skeletal muscle contraction.    (b)…

A: Sliding past theory explains the process of various muscle proteins such as actin and myosin sliding…

Q: In a skeletal muscle fiber, Ca2+ is released from a. ACh receptors. b. the motor end plate. c. the…

A: Skeletal muscle mainly attaches to the skeletal system via tendons to maintain posture and control…

Q: Which of the following is false regarding smooth muscle? A. It contracts slower than skeletal…

A: There are three types of muscles skeletal, cardiac and smooth muscles.

Q: What do you mean by innervation of skeletal muscles?

A: Skeletal muscles produce all the movements of body parts in relation to each other and are attached…

Q: Which of the following would be recruited in a muscle stimulation when contractile strength…

A: Small motor units, typically consisting of one nerve and a few muscle cells, are recruited first.

Q: When an action potential runs down the surface of the sarcolemma, the muscle doesn't immediately…

A: Muscles  play an important part in locomotion and movement. They are derived from mesodermal layer…

Q: a. Explain why the muscles of the legs of a childwith Duchenne’s muscular dystrophy appearlarge.b.…

A: Duchenne's muscular dystrophy is a non-inflammatory, progressive disease of skeletal muscle. It is a…

Q: Which of the following can respond to increased stimulation with a graded response: a) motoraxon…

A:

Q: Following an injury to a nerve, the muscle it supplies with motor nerve fibers may become paralyzed.…

A: In human physiology, muscle contraction is considered a process, which exerts an increase in the…

Q: a. At what time point did would a nerve begin to fatigue? Comment on the percentage decrease in…

A: Introduction Muscle fatigue:- It is a decrease in maximal force or power production in response to…

Q: Select the best answer or answers from the choices given: The function of the T tubules in muscle…

A: Muscle contraction can be defined as the process in which the length of the muscles decreases and…

Q: How would muscle contractions be affected if skeletalmuscle fibers did not have T-tubules?

A: Muscles:                    In animals, soft tissues found known as muscles. Muscles cells contain…

Q: A.What type of contractions do skeletal muscles do? B. What type of contractions do cardiac muscles…

A: Muscles are usually of three types that is Skeletal,smooth and cardiac  Skeletal muscles are found…

Q: - The sacromere is: a- A functional unit of the skeletal muscle b- The area between two intercalated…

A: Muscle cells, commonly known as myocytes, are the cells that makeup muscle tissue. There are three…

Q: What is represented on the image above? (A) A cross-section of a cardiac muscle B A longitudinal…

A: Introduction Muscles are soft tissues, Many, stretchy fibers make up our muscles, muscle is a group…

Q: The excess ATPs are stored in muscles as CPs? A. True B. False

A: Adenosine triphosphate (ATP) is a three-phosphate nucleotide. The addition of phosphorous to the…

Q: Which is true for striated muscles? a) may have spontaneous activity b) is not under the control…

A: Muscle are group of cells which perfom a specific function. They are responsible for movement. They…

Q: One of the primary reasons that one individual is faster in a 50-meter sprint than another is a. a…

A: The speed of a person is dependent on the type of muscle fiber that is present in an individual. The…

Q: Why does a motor unit of the eye have few musclefibers compared to a motor unit of the leg?

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

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

A: Skeletal muscles -- are the muscle which are in our voulantry control These  are attached to the…

Q: Unlike in adult rats, muscle fibers in newborn rats Select one: O a. Removing a limb bud O b.…

A: Skeletal muscles are functionally organized both into motor units as well as that the muscle fibers…

Q: The fast fatigable motor units are used predominantly for which of the following activities?…

A: Fast fatigable motors are used when large forces for a short time are required.

Q: Why does a person with muscles that have a higher percentage of slow fibers have greater endurance…

A: Skeletal muscles are made up of individual muscle fibers.There are two types of skeletal muscle…

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.