31 Which of the following aids in the transmission of nerve impulses? Multiple Choice Myofibrils Tryptophan Acetylcholine ATP
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Step 1: Acetylcholine is a neurotransmitter that aids in the transmission of nerve impulses. Show more…
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Q1) Contains an ATPase activity. A. Calsequestrin B. Actin C. Myosin D. Troponin complex E. Tropomyosin Q2) All of the following amino acids (or amino acid derivatives) neurotransmitters are activated by a reuptake mechanism EXCEPT which one? A. GABA B. Glycine C. Aspartate D. Histamine Q3) The neurotransmitter acetylcholine is A. Synthesized by the enzyme choline esterase. B. Hydrolyzed by the enzyme acetylcholine esterase at the synapse. C. Synthesized in the adrenal medulla. D. The primary neurotransmitter in the brain. E. Competitively inhibited by diisopropylfluorophosphate.
Adi S.
56. Which list is in the correct order of DECREASING size? A. Muscle fibre, sarcomere, myofilament, myofibril B. Muscle, fasciculus, muscle fibre, myofibril C. Sarcomere, fasciculus, myofibril, myofilament D. Muscle, muscle fibre, myosin, myofibril E. Sarcomere, myofilament, myofibril, muscle 57. At the neuromuscular junction, what neurotransmitter is released to cause muscle contraction? A) Dopamine B) Acetylcholine C) Serotonin D) GABA E) Glutamate 58.What part does the sarcoplasmic reticulum play in the contraction of muscles? A) Releases calcium ions B) Stores acetylcholine C) Generates action potentials D) Breaks down ATP E) Releases sodium ions 59. What happens first in the muscle fiber that causes an action potential to be produced? A) Binding of acetylcholine to receptors on the sarcolemma B) Release of calcium ions from the sarcoplasmic reticulum C) Contraction of the sarcomeres D) Depolarization of the transmembrane potential E) Release of potassium ions 60. To stop the action potential at the neuromuscular junction, what enzyme breaks down acetylcholine? A) Acetylcholinesterase B) ATP synthase C) Myosin ATPase D) Creatine kinase E) Sodium-potassium pump
Jerelyn N.
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