Find the false statement about white muscle fibers (glycolytic fibers)? Se ect one: a. Fiber diameter are small b. Like gastrocnemius muscle C. Fast or slow twitch muscle fibers d. Low fatigue resistant e. Mitochondrial density is law

Q: Contrast the role of Ca2+in the contraction of a skeletalmuscle fiber and a smooth muscle cell.

A: Muscles are soft tissues present in most animals. They contain protein filaments called actin and…

Q: Compare the composition of flight muscles with a powerful locomotive muscle in terms of…

A: Flight muscles are a type of muscle which is found in birds or insects. This muscle helps birds or…

Q: During the contraction of a vertebrate skeletal muscle fiber,calcium ions(A) break cross-bridges as…

A: Skeletal muscles are voluntary muscles. It attached to bone by tendons. It helps in movement of…

Q: Compare and contrast the three skeletal muscle fiber types.

A: Skeletal muscle can be defined as one of three major muscle types, the others being  are the cardiac…

Q: A person with a high Vo2maxa. needs less oxygen than someone with a low Vo2max.b. has stronger…

A: VO2 max test is typically conducted in a sports performance lab to establish an athlete's aerobic…

Q: Unlike skeletal muscle cells, cardiac muscle cells________."   A do not use the sliding filament…

A: Muscle is a soft tissue present in various animals.Muscle cells are composed of protein filaments of…

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: Explain the characteristics of these muscle fibers: slow twitch, fast twitch oxidative and fast…

A: Skeletal muscle fibers are striated tissues. These tissues are under the control of the somatic…

Q: Summation in a single muscle fibre means that Select one: a. the fibre increases the frequency of…

A: Introduction Muscle contraction:- It is the activation of tension-generating sites within muscle…

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: The function of Ca2+ in skeletal muscle contraction is toa. cause an allosteric change in myosin so…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: Fast-twitch muscle fibers have which of the following characteristics?a. fewer number of…

A: Fast twitch muscle is a muscle which helps you to do short and quick responses

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: Identify which muscle fiber types would be recruited for each of the following functions. Explain…

A: Muscle fibers  are composed of myofibrils that make up the skeletal muscles that involve in the…

Q: Describe the major events that occur when a muscle fiber contracts. Include all chemicals,…

A: Numerous bundles which make up the skeletal muscle are called fascicles and each of these is…

Q: a. Explain why a cast placed around a fracturedleg in which extensive tissue damage hasoccurred…

A: Casts are supportive devices used to hold the injured bone intact in a location while the healing…

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 relaxed muscle, the myosin-binding site on actin is blocked by ________. a. titin b. troponin c.…

A: Tropomyosin is known to block myosin-binding sites on actin molecules. It prevents the formation of…

Q: In a contractile unit of muscle, "thin" filaments are composed of А. O A. calcium. O B. actin. OC.…

A: Muscle contraction leads to shorting the length of muscle. Muscle contraction implies that movement…

Q: structural organization of muscle fibers makes it possible to produce contractile force

A: Answer: Sarcomere of Muscles fibre or myofibre is the basic contractile unit of skeletal muscle.

Q: Type I of muscle fibers are utilize both oxidative metabolism O and anaerobic glycolysis O utilize…

A: The three types of muscle fibres are slow oxidative (SO), fast oxidative (FO) and fast glycolytic…

Q: All of the following characteristics apply to skeletal muscle except

A: Option (d) is right answer.  Because they do not contain intercalated discs.

Q: In relation to the size principle of motor unit recruitment, the mechanism of recruitment f) order…

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

Q: Chickens are capable of only brief bursts of flight, and their flying muscles consist of fast…

A: Introduction: Wings of birds are responsible for giving them flight. They possess feathers and the…

Q: The purpose of transverse tubules is to Select one: a. ensure a supply of glycogen throughout the…

A: Transverse tubules are basically the structures present in the muscles,they are the invaginations or…

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: In smooth muscle fibers, the thin filaments attach to structures called functionally similar to Z…

A: Muscular tissue is made up of long cells of muscle fibers. It has contractile proteins that are…

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: a. Ca2+ does not affect muscle force. b. The muscle cell eventually habituates to the level of Ca2+…

A: Structure of muscle cell A muscle cell consists of hundreds of fibers. A single fiber consists of…

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: Most of the muscles of the skeleton are attached to areas very close to the joints, so their arms,…

A: *During muscle contracts and shortens  against a load  it will perform work and it will be done by…

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: The diagram below represents the terminal cisterna in a muscle. Name and briefly explain the…

A: Calcium causes contraction by reacting with regulatory proteins that prevent actin and myosin from…

Q: a) Describe how the isolated muscle behaved as it was stretched progressively. b) What effect…

A: The all-or-none principle asserts that the intensity of a nerve cell's or muscle fiber's reaction is…

Q: .. The difference between FF (type II, glycolytic) motor unit and S (type I) motor unit is that a S…

A: Introduction:- When identifying muscle fibres, two factors to consider are how fast some fibres…

Q: Predict the effect of the following on muscle contraction: A. Bitten by a black widow B. Curare C.…

A: Muscle contraction refers to the generation of tension at specific sites in the muscle fibers. It…

Q: A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast…

A: In skeletal muscle fibers, contraction in Slow oxidative (SO) fibers is relatively slow and use…