Which of the following is found on the outside of skeletal muscles? a). Myofibrilsb). Sheathc). Bundlesd). Sarcomere

Q: What is the gross anatomical arrangement of a skeletal muscle?

A: An entire skeletal muscle is viewed as an organ of the solid framework. Every organ or muscle…

Q: Describe four muscle proteins and their functions.

A: Muscle contraction can be described as the process occurring within the muscle fibres, which…

Q: 23) which of the following is true about skeletal muscle?  a) they depend entirely on anaerobic…

A: Skeletal muscles are made of long, cylindrical thin cells that contain highly organised proteins and…

Q: Explain in detail: 1) how an action potential occurs in a lower motor neuron, 2) how the motor…

A: Action Potential --- Propagation of information in the nervous system from central nervous system…

Q: 3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle…

A: ATP works as a cell energy currency and it helps the cell to rapidly accumulate energy and transfer…

Q: Describe what is meant by muscle fiber "cross-bridges". What occurs to enable movement of the…

A: Muscular system is a body system which is involved in regular contraction and relaxation resulting…

Q: List the principal functions of skeletal muscles.

A: Muscle is composed of contractile protein and belongs to the category of soft tissue. Its primary…

Q: To build individual muscle strength and muscle girth (i.e. bulk up), it is best to: O a) do…

A: In the field of fitness and strength training, building strength and girth in muscles is a common…

Q: What is migrating myoelectrical complex (MMC)?

A: At fasten time, The contraction of muscle in stomach and in small intestine to clean the residual of…

Q: What type of cells sit outside the sarcolemma of a muscle fiber but below the basement membrane of…

A: Sarcolemma The plasma membrane of the muscle cell is called sarcoplasm and it is surrounded by he…

Q: Describe the unique features of muscle fibers that allow them to contract.

A: The unique features of muscle fibers that allow them to contract are primarily due to their…

Q: Total force in the length:force relationship is the result of a.) ideal overlap between the myosin…

A: The length-tension relationship in muscle tissue describes the force a muscle can generate at…

Q: Which of the following does NOT happen when your muscles are fatigued? A) Lactic acid buildup causes…

A: The inability of a muscle to maintain force of contraction after prolonged activity is called muscle…

Q: What happens to sarcomeres when actin and myosin filaments in a muscle fiber interact during the…

A: Answer - According to the question option B is correct which says : -  sarcomeres usually get…

Q: Describe the types of skeletal muscle fibers based on: Structural differences (chemical and…

A: Skeletal muscle fibers are incredibly diverse and adaptable, playing a crucial role in our ability…

Q: Identify the many roles (functions) of skeletal muscle in the body

A: About 40-50% of the body weight of an adult is contributed by skeletal muscle. It is primarily…

Q: What happened to the number of fibers contracting as you increased the voltage? b) In light of the…

A: In physiology if a isolated muscle fibre /motor neuron is stimulated, it will consistently offers a…

Q: Identify the structure highlighted in green: 三三園 Sarcolemma Myofibril Sarcoplasm

A: The image given is of  excitation-contraction coupling mechanism in skeletal muscle.

Q: identify the incorrect statement about skeletal muscle  (A) the epimysium, perimysium, and…

A: Concentric isotonic contractions - contractions that involve shortening of the muscle are referred…

Q: What cellular changes could cause the skeletal muscle to become rigid?

A: Skeletal muscle cells do not relax or remain in a rigid state due to lack of ATP and so muscle…

Q: Muscular strength is defined as the: O a) ability of a muscle to contract with maximal force b)…

A: Understanding muscular strength in the field of human physiology holds importance as it considered…

Q: The total tension a muscle can develop depends upon two factors. What  are they?

A: Muscle contraction and relaxation helps muscular system to be function properly. When a muscle…

Q: A) tetany is rapid spasm in the muscle. B) Tetany is usually caused by an increase in the blood…

A: Introduction: Tetany occurs in muscles that have no absolute refractory phase. The heart's muscles…

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: Describe how each of the following factors influences motor unit recruitment: a) Increasing…

A: Alpha motor neurons (also called inferior motor neurons) don't have striated muscle and cause…

Q: In 2013, Zach Bitter set a new record for running a 100 mile Ultra-Marathon in less than 12 hours.…

A: The muscle fiber is an individual muscle cell that consists of hundreds or thousands of myofibrils.…

Q: A muscle fiber is the same thing as a: a) myofibril. b) myocyte. c) myofilament. d) fascicle.

A: MUSCULAR TISSUE:- These tissues are different from other tissues as they have the ability to…

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: List the structures of skeletal muscle from largest to smallest: muscle fiber, muscle, and fascicle.

A: The three types of muscle present in the body are skeletal muscle, smooth muscle and Cardiac muscle.…

Q: 2 T tubule 3. ATP 4. lateral sacs of the sarcoplasmic (c) supplies energy for the reticulum 5.…

A: Muscle contraction begins when the impulse arrives at a particular muscle which is going to be…

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: 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: Define and describe hypertrophy of skeletal muscles. Whatconditions stimulate it?

A: Hypertrophy is described as a condition where there is an increase in the skeletal muscles. This…

Q: Individual motor units can vary based on which of the following? (SELECT ALL THAT APPLY) a.) The…

A: Motor units It consists of a motor neuron and every skeletal muscle fiber that the neuron's axon…

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.