Q: n order to study and understand muscle diseases, one needs to have a good understanding of normal…
A: Muscles contract in a repeated pattern of binding and releasing between the two thin and thick…
Q: When the membrane voltage shifts from the RMP to a more negative voltage; this is a_
A:
Q: In your own words, describe the main events occurring between the arrivalof an action potential at a…
A: The chemical synapse that favors the transmission of the signal from the motor neurons to the muscle…
Q: What do you mean by acetylcholine?
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Q: The resting membrane potential of a neuron typically is 70 mV. What does this mean?
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Q: What special characteristics of the presynaptic neuron (motor neuron) and motor end-plate…
A: The neuromuscular junction (NMJ) is the site for chemical interaction between the motor neuron and…
Q: Why is Excitation Contraction Coupling important?
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Q: What are the difference between actin and myosin.
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Q: Which of both skeletal and smooth muscle is trig-gered by an increase in cytosolic Ca2+.
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Q: Table1.Contractionofsmoothmusclebythreeagonists Contractileresponse(mm) Log[agonist] (M) -10 -9 -8.5…
A: Here, contraction of smooth muscle using increasing concentration of three agonists is given. The…
Q: ach
A: B. ACH or Acetylcholine is the only neurotransmitter that is present in the somatic muscular…
Q: In a myofibril, the light central region of an A band is called... O I band O M line O Z band O H…
A: In a myofibril, the light central region of an A band is called H zone.
Q: What role do the Na+/K+ pumps play in establishing the resting membrane potential?
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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: What is the difference between G-actin and F-actin?
A:
Q: What do you mean by neurofilaments?
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A: In the human body, there are three types of muscles, skeletal muscles, cardiac muscles, and smooth…
Q: Based on your understanding of skeletal muscle fiber physiology, which of the following processes is…
A: ATP is the adenine tri phosphate and is the instant source of energy .It is used in many of the…
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A: The muscular framework is an organ framework comprising of skeletal, smooth and cardiovascular…
Q: Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why…
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Q: What about extracellular Ca21 in excitation-contraction coupling?
A: Excitation–contraction coupling (ECC) is defined by the Alexander Sandow (1952). It defines as the…
Q: The resting potential is dependent upon the electrochemical gradient for potassium ions because: O…
A: Resting potential is a relatively static membrane potential which is usually referred to as the…
Q: How can myosin convert the chemical energy released by ATP hydrolysis into mechanical work?
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Q: An antibody has been isolated that binds to F-actin but not to G-actin. Whatstructural feature(s) of…
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Q: Which of the following statements about glycolytic fibers is true?
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Q: Potassium leak is a major determinant of resting membrane potential. What happens to the resting…
A: Answer- Option b. The resting memberane potential becomes more negative.
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A: The cardiovascular system is sometimes called a blood-vascular system. In sustaining homeostasis,…
Q: What is the reaction catalyzed by the ATPase domain of myosin?
A: Myosin is a molecular motor responsible for biological motions such as muscle contraction and…
Q: Which of these actin protrusions have a three dimensional arrangement?
A: The expansion of cellular membranes is known as protrusion. A leading protrusion, which is part of a…
Q: electrophysiology Using your knowledge, list the excitation contraction coupling events that explain…
A: A motor unit, the functional unit of muscle contraction, is a single motor nerve and the associated…
Q: An oxygen-storage protein present in muscle
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Q: Myoglobin makes some muscle fibers to appear red
A: A mature skeletal muscle consists of thousands of muscle fibers which are known as myofibrils. These…
Q: Without acetylcholine esterase (AChe) will the action of skeletal muscle increase, decrease or not…
A: Acetylcholine esterase is an enzyme ;which play very important role in our body by catalyzing the…
Q: Would a skeletal muscle fire an AP if a single quanta of ACh was secreted? Why or why not?
A: Acetylcholine (ACh) is a neurotransmitter that is produced by motor neurons and binds to receptors…
Q: Mutations in myosin
A: myosin is a motor protein most notably involved in muscle contraction. Small genetic mutations in…
Q: How does myosin convert the chemical energy released by ATP hydrolysis into mechanical work?
A: Muscles are structures capable of changing their length in response to a stimulus.
Q: Actin filaments are composed of?
A: The cytoskeleton provides cellular shape and internal organization. In microtubules, the tubulin…
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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: Potassium leak channels allow K+ to pass into the neuron.
A: In neurons the signals are transmitted electrochemically. A neurotransmitter, that is released by…
Q: What do you mean by nerve fibre?
A: The term nerve fiber can be used to describe any extension in the context of the nervous system. It…
Q: What defines a Sarcomere: a. Width of the I zones b. A band plus the H zone Distance between the Z…
A: The basic contractile unit of muscle fibers is referred to as the sarcomere. The sarcomere is…
Q: f actin filaments such that it prevents myosin II
A: Answer: Filamin: The filamins (FLN) are a family of actin binding proteins that can convert, via…
Q: What do you mean by Action Potential in nervous system ?
A: Biology terms are fundamental concepts and terms used in biology, which is the study of life and…
Q: QUESTION 39 In a contractile unit of muscle, "thin" filaments are composed of O A. calcium. О В.…
A: 39. The muscular system is one of the major organ systems in the body composed of skeletal, smooth,…
Q: Following the arrival of an action potential in stimulated cells, synaptic vesicles rapidly fuse…
A: Action potential Is an instantaneous, fast, temporary, and spreading change in the resting membrane…
Q: What are the two mainions that participate in theelectrical impulsetransmission in neurons?
A: An action potential, likewise called a nerve impulse, is an electrical charge that moves along the…
What do you mean by actin myofilaments?
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- What do you mean by innervation of skeletal muscles?Table1.Contractionofsmoothmusclebythreeagonists Contractileresponse(mm) Loglagonist] (M) -10 -9 -8.5 -8 -7.5 -7 -6.5 -6 -5.5 -5 -4.5 -4 agonist-1 0.2 1.8 4 9.8 14.8 18 19.6 19.4 20 20 20 20 agonist-2 0.2 1 2.6 4 7.6 8.8 9.6 9.8 10 10 agonist-3 0.2 2 5.2 10 14.8 18 19.6 20 a) Experiments were performed on the contraction of smooth muscleusingincreasingconcentrationsofthreeagonistsandtherespo nsesare given in Table 1. The maximum response of the system was 20mm contraction. Calculate the % maximum response of the systemforeachconcentrationofagonistandplotgraphsshowingthede pendence of the response on log [agonist]. Compare the threeagonists in terms of their maximal effect and their potency usingpharmacologicalterms. EIN 5The efferent fibers of somatic nervous system are located in the CNS which regulated skeletal muscle contraction. * F T
- This is going to be a different type of activity! I would like you to make a diagram of the action potential in a neuron. You can draw this on a physical piece of paper or use a computer program of your choice. Take a picture or screenshot of your work and upload it here. Think about the various steps as well as the different proteins and substances involved in this process.What do you mean by Action Potential in nervous system ?what is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin playwhat is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin play