What is the name of the functional contracting unit of the muscle?
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What is the smallest functional unit of skeletal muscle? Explain why it is the smallest functional unit and what happens to it during muscle contraction.
DQ. 1. Name and describe the four special functional abilities of muscle that are the basis for muscle response. DQ2. (a) Describe the structure of as sarcomere and indicate the relationship of the sarcomere to myofilaments . (b)explain the sliding filament model of contraction using appropriately labeled diagrams of a relaxed and contracted sarcomere. DQ3. What is the importance of acetylcholinesterase in muscle cell contraction? Course Home * + ure.com/courses/27627/discussion_topics/175595 This is a graded discussion: 5 points possible due Mar...
What prevents two antagonistic muscles from contracting simultaneously? O Polysynaptic reflexes The myotatic reflex Muscle spindles Reciprocal inhibition QUESTION 2 Motor neurons communicate to muscle at the: neurofiber synapse muscle spindle polar junction neuromuscular junction QUESTION 3 What is responsible for initiating muscle contractions? Actin Sarcomeres Acetylcholine Myofibrils QUESTION 4 the thick filament that moves along the thin filament. Myosin, actin M line, Z line Z line, M line Actin, myosin QUESTION 5 move nutrients through the digestive tract and...
Does the energy associated with the mechanical work performed by a contracting muscle fiber (cell)derive from the stored potential energy of ionic gradients, or from some other source? Please explain.
Skeletal muscle contracting under anaerobic conditions further metabolize the pyruvate produced by glycolysis to lactic acid as part of a fermentation reaction.Why is this reaction essential for the anaerobically functioning cell?
Why are there different types of skeletal muscle phenotypes, and what are the functional/physiological differences between them?
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle cell stops contracting. b) The muscle cell makes less ATP c) The muscle cell continues with the Kreb's cycle but not the electron transport chain d) All of these are correct
1. Your pet has a muscle that does not seem to be contracting when stimulated via the motor neuron fibre. Can you explain any possible problems? You should include the steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in your answer.
22. Compare the characteristics of smooth muscle and skeletal muscle. How are they different? What is similar? 23. Differentiate between the basics of the two types of smooth muscle tissue (single-unit and multi unit). Which ones have a pacemaker? Which ones don't? Where can you find each? 24. What is the modiolus? What are the structures that insert into the modiolus? 25. What is the structure that supplies motor innervation to the muscles of facial expression? 25. What is the...
Saved Which of the following is/are a functional requirement of cardiac muscle tissue? Check all that apply. 2 0032:23 1 Cardiac muscle fibers must be able to contract without nervous stimulation Muscles must be voluntary as well as involuntary Cardiac muscle fatigues easily. Cardiac muscle must be independent of conscious control. Cardiac muscles contract in unison.