Question 13 Write down the types of muscle contractions and describe each of them briefly. How is it ensured that our muscles in our body work in coordination?

Q: question 3

A: 1. With age the collagen increases in the tissues. Collagen is stiff as compared to muscles.

Q: What is the molecular explanation for the observation that the I band appears to shorten in a muscle…

A: The basic contractile unit of muscle fibre is the sarcomere. Each sarcomere is made up of two…

Q: Which of this muscle is found in heart? O cardiac muscle O smooth muscle O skeletal muscle

A: Muscles are in the form of contractile fibres varying in lengths and form muscular tissue. The…

Q: When an individual sarcomere undergo contraction, which of the following happens? H band and I band…

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

Q: "Motor neurons trigger action potentials in muscle cell membranes that open voltage-sensitive Ca2+…

A: Introduction: The contraction of the muscle is significantly influenced by calcium ions. When…

Q: What part of the sarcolemma contains acetylcholine receptors? A) motor end plate B) any part of the…

A: Skeletal muscles are muscles which are under voluntary control. They are also known as striated…

Q: What are the mechanisms for muscle contraction vs. relaxation in regards to myosin/thick…

A: The mechanism of contraction of skeleton muscle was based explain through "sliding filament theory"…

Q: Which of the following best describes the phenomenon of actin filament treadmilling? O Treadmilling…

A: Actin and myosin are two of the main proteins involved in muscle contraction. Actin is a protein…

Q: If an athlete increases their strength capability by 15% and their body mass by 20%, their ability…

A: Muscle contraction Muscle contraction is defined as the shortening or stretching of muscles while…

Q: Considering these events, what is the right sequence in muscle contraction? i. Ca2+ released from…

A: Muscles are the connective tissues that are involved in the movement by their contraction and…

Q: QUESTION 10 Which of the following is not a phase of muscle contraction? O A. Excitation O B.…

A: The question is asking us to identify which of the given options is not a phase of muscle…

Q: Question 30 How does muscles stabilize the skeletal system? Muscles... ...create torques at skeletal…

A: Muscles are attached to bones via tendons & are responsible for producing movement and…

Q: What happens when troponin and tropomyosin block the active sites of actin? O The muscle contraction…

A: Troponin is basically a complex of three regulatory proteins which are troponin I, troponin C, and…

Q: As mentioned in class, one additional major use of ATP in skeletal muscle (besides powering the…

A: Assumptions:The volume of a single sarcomere is roughly cylindrical.The average diameter of a…

Q: Question 47 (1 point) Which of the following options describes the speed at which force may be…

A: Type 1 muscles fibers are present for long duration of contractile activities.and found in the…

Q: Sarcomeres are functional units _____muscle A) Cardiac B) Skeletal C) B and C only D) Smooth

A: To say that the sarcomere is the practical unit implies that every one of the segments required for…

Q: Question 6 (1 point) The crossbridge cycle can begin when an action potential travels t-tubules…

A: During the muscle movements, the thick filaments slide over the thin filaments and results in the…

Q: Question 9 of 16 Which of the following causes the merging of synaptic vesicles with the synaptic…

A: In this question synaptic transmission of impulse is shown. So synapse is a connecting point between…

Q: QUESTION 17 What type of muscle would we find as the predominant muscle type in marathon runners?…

A: The objective of the question is to identify the predominant muscle type in marathon runners.

Q: D Question 38 1 pts You take a human smooth muscle cell and block the release of calcium from the…

A: Q 38.) :- ans.In smooth muscle cells, contraction is triggered by the presence of calcium ions…

Q: atent phase V [ Choose ] Active return of Ca2+ into SR Ca2+ released from SR Power stroke of…

A: Alpha motor neurons are the neurons which  innervate the skeletal muscle fibers. On entering a…

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: Question 2 of 16 The relatively light portion of the A band of skeletal muscle Select the correct…

A: Skeletal muscle- Skeletal muscle forms about 40-50% of body mass and is responsible for movement and…

Q: The part of the muscle that is enclosed in perimyskum. The part of a muscle fiber that aids in…

A: Hello you have asked multiple subparts questions. We will be able to answer only first three. For…

Q: Question 6 of 16 Which of the following is mismatched with its function in muscle contraction?…

A: Introduction: Muscle contraction is defined as the change in length of the muscle , it can include…

Q: What is the correct order that a motor nerve stimulation encounters structures in triggering a…

A: Muscular system is a type of body system which is involved in Contraction and relaxation, thus…

Q: Which of the following is the CORRECT relationship?

A: Phosphatidylinositol 4, 5 bisphosphate is known as PIP2 that is a component of cell membrane -…

Q: Question 4 of 16 The physiologic event that takes place at the sarcolemma of a skeletal muscle cell…

A: The skeletal muscles are under the control of central nervous system that regulates the contraction…

Q: QUESTION 6 A muscle organ shortens during: eccentric contraction O isometric contraction O…

A: According to our guidelines we can answer only the first three supbarts of a question. So, upload…

Q: What occurs when the sarcomere length of skeletal muscle is reduced beyond the length w optimum…

A: Skeletal muscle contains connective tissue surrounding the muscle fibers and have their blood supply…

Q: Sarcolemma is the plasma membrane of the muscle fiber. Myosatellite cells, remain closely associated…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Which of these processes need ATP most? O Detachment of myosin head O Release of calcium O None of…

A: Contraction of muscles is controlled by two important proteins, actin and myosin.  In muscle cells,…

Q: 13 QUESTION 9 provide(s) hardness to bones, whereas OA. Hydroxyapatite and other minerals; proteins…

A: The question is asking to identify the substances that provide hardness and flexibility to the bones…

Q: Alter death, calcium pumps no longer fünction and the calcium ion concentration of muscle fiber…

A: * After death of an animal or organism the calcium pump stops hence calcium should not be pumped and…

Q: What is the basic functional unit of a myofibril? a. endomysium b. sarcomere c. muscle fiber d. gap…

A: Muscles are specialized tissues which play an important role in body movement along with bones. They…

Q: A. Toadfish Fibers, 16°C Force [Free Calcium] 0.0 W 0.2 0.6 Tim Toadfish are fish that can produce…

A: The muscle contraction is referred to as a tetanus if the frequency of action potentials produced…

Q: Which of the following are part of the muscle contraction process?(More than one answer may be…

A: Muscle contraction is the basis of all skeletal movements. Skeletal muscles are composed of muscle…

Q: QUESTION 15 What section of a sarcomere does not shorten during muscle contraction? Al Al Z disk…

A: INTRODUCTION Sarcomere It is a part of a striated muscle, which is a functional unit and works in…

Q: "When a muscle develops increased tension, but does not shorten, it is said to exhibit" O isotonic…

A: Muscle contraction is the development of tension in the muscle fibers. It can be described with two…

Q: Which of these is an example of isotonic muscle contraction? O Swinging a bar O Swimming Running a…

A: Basically in an isotonic muscle contraction, tension remains the same throughout the muscle while…

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: Why is myosin II the only myosin capable of producing contractile force?

A: Introduction Myosins are a group of motor proteins that play a key role in muscle contraction and a…

Q: The transverse tubules store and release calcium ions (Ca<") in response to an action potential in a…

A: The transverse tubules are formed by phospholipid bilayer and play a significant role in the…

Q: Question 1. Describe an action potential in a muscle fiber in detail, know the changes in voltage…

A: An action potential is a brief electrical signal that travels along the membrane of a neuron or…

Q: Each of the following statements is a particular step involved in the sliding filament theory of…

A: Muscular movement of skeletal muscles occurs due to the contraction of muscles. Muscle is made up of…

Q: What do synaptic vesicles of a neuromuscular junction contain?   a serotonin   b sodium   c…

A: A neuromuscular junction is a chemical synapse between a motor neuron and a muscle fiber. It allows…