Unlike skeletal muscle cells, cardiac muscle cells________."   A do not use the sliding filament mechanism of contraction   B are not striated   C do not rely on an influx of Ca+2 for contraction to occur   D do not require neural stimulation to contract

Q: Which connective tissue cell is a tissue macrophage? a.Mast cell b.Plasma cell c.Fibroblast…

A: Muscle fibers are a type of cell that may be found all throughout the body. The basic function of…

Q: 6. When skeletal muscle cells fanetion anocrobically, they accumulate the compound which caases…

A: Answer 6 is Option D is correct ; lactic acid. During intensive exercise, lactic acid fermentation…

Q: Which is a false statement about skeletal muscle structure?a. A myofibril is composed of multiple…

A: Skeletal or Striated muscle- These are present on muscles that are associated with the skeleton.

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: 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…

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Q: Ans Column I Column II Ca binds to calmodulin 1. Binds calcium in skeletal muscle cells Ca binds to…

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

Q: Satellite cells *         A- are muscle stem cells       B- are located between the plasma membrane…

A: Myosatellite cells, otherwise called satellite cells or muscle stem cells, are little multipotent…

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: 2.If you were running an experiment and interrupted the interaction between thin and thick…

A: Introduction :- When a sarcomere (a) contracts, the Z lines become closer together and the I band…

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: 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…

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

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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: Cardiac muscles differ from skeletal muscles in thatthey ________.a. are striatedb. utilize aerobic…

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

Q: In a study of aging in dolphins that were stranded on the beach, researchers took muscle biopsies…

A: Myosin isoform is the maximum velocity of contraction. Myosin heavy chain converts the chemical…

Q: The function of ATP during muscle contraction is toa. cause an allosteric change in myosin so it…

A: ATP(adenosine triphosphate) causes an allosteric change on myosin so it detaches from actin and…

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: Skeletal Muscle Smooth Muscle Cardiac Muscle Striated? [a] [b] [c] [f] # of Cells? [d] [e] Shape?…

A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…

Q: What would be affected if the globular head of myosin was misshapen? a) The ability to bind to…

A: Myosin is a protein, but specifically, a motor protein and a fibrous globulin of muscle that can…

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: 5. Cardiac muscle cells have the unique ability to demonstrate ________. A. graded strength B.…

A: The heart is a muscular organ liable for maintenance of blood flow. It achieves that work by its…

Q: 1. During skeletal muscle contraction, what event directly precedes the release of actin by myosin?…

A: It is required to mention the event that directly precedes the release of actin by myosin during the…

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: According to the sliding filament model, when muscles contract,a. sarcomeres shorten.b. myosin heads…

A: Answer is option e.

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: What might happen if skeletal muscle lacked tropomyosin?   A. The striation pattern would…

A: Myogenesis is the process of formation of muscles from the mesodermal layer of embryonic germ cells.…

Q: Repetitive stimulation of a skeletal muscle fiber will cause an increase in contractile strength…

A: Skeletal muscles are voluntary muscles. Skeletal muscles are striated because of presence of…

Q: Find the false statement about white muscle fibers (glycolytic fibers)? Se ect one: a. Fiber…

A: Depending upon the presence or absence of myoglobin muscle fibres can be of two types that is ref…

Q: The release of calcium ions initiates muscle contractions.Watch this video…

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

Q: Myosin binds to actin, then bends. What is ATP needed for next? A. to pump the Ca++ “keys” back into…

A: D option is the correct statement.

Q: John and Seth are both Olympic athletes that have agreed to have their muscle tissue analyzed for a…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: When a muscle fiber is stimulated with repeated stimuli, the contraction force is summed due to: a)…

A: INTRODUCTION Summation is that the . occurrence of additional twitch contractions before the…

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: A bacterial toxin is known to block the release of ACh at the motor end plate of skeletal muscle.…

A: (c) the ability to stimulate the muscle is impaired

Q: Heart muscle cells ______.   A will not contract unless acetylcholine is released at a…

A: Cardiac muscles are known as Myocardium.Cardiac muscles are different from skeletal muscle because…

Q: which of the following statement is true?  a. Fast fibers have difficulty fatiguing  b. Fast…

A: Tissue is the next level organization of the cells. There are 4 different types of tissue are…

Q: 1. A receptor absorbs the energy of a stimulh by means of a. Reception b. Transmission c.…

A: Physiology is defined as the study of the way the human body works. It tells the basic and complex…

Q: For the myosin head to form cross bridges with actin, it is necessary for to bind to actin. a)…

A: When calcium atoms bind to the globular molecules like my os in protein, they change shape and this…

Q: The shortening of _____________ will cause the shortening of a muscle fiber

A: A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main…

Q: Which of the following statements is true?a. Fast fibers have a small diameter.b. Fast fibers…

A: The skeletal muscle fibers are of 2 types: slow-twitch muscle fibers and fast-twitch muscle fibers.…

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: The transverse tubular system: A)speeds the transmission of an action potential down the length of a…

A: *Tansverse tubular system is a network of interconnecting rings that surrounds a myofibril. *It…

Q: 1. Compare the excitation-contraction coupling in the three types of muscle. Skeletal muscle Smooth…

A: In this chart we have two discuss difference between muscles. Muscles protact body ,help in moment…

Q: Compare the values below. Which is greater, or are the two values equal? A. Length of the I-band in…

A: Our muscular system is composed of muscle tissue. Different types of muscle tissues are found that…

Q: During muscle contraction, the cross-bridge detaches when ________.a. the myosin head binds to an…

A: Muscles can change their length in the response to a stimulus.