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Introduction to
Movement
1) Describe the generation of muscle force
2) List the properties of the Neuro Muscular Junction (NMJ)
Step by step
Solved in 4 steps
- Action potential enters from adjacent cell. Ca2+ 2 K* 3 Na+ Ca2+ ECF ATP NCX ICF 3 Na+ RyR Ca2+ Sarcoplasmic reticulum (SR) SR L-type Ca2+ Ca2+ channel Ca2+ stores ATP T-tubule Ca2+ sparks Ca2+ signal Ca2+ Ca2+ Actin eereee 33335 Myosin Contraction Relaxation Copyright 2009 Pearson Education, Inc. 1. Explain what is going on in steps 1-6. 2. Explain what transport proteins are involved is getting Ca2+ out of the cytosol. 3) Purple foxglove is a plant containing chemicals that slow the activity of the Ca2+-Na+ antiport. What will ingestion of purple foxglove increase or decrease levels of Na+ in the ICF?The muscle relaxes if no new nerve signal arrives. However the neurotransmitter from the previous stimulation is still present in the synapse The activity of helps to remove this neurotransmitter. myosin action potential tropomyosin acetylcholinesteraseMyosin II action differs from that of kinesin in that one of the kinesin heads is always in contact with a microtubule, whereas both myosin heads become completely detached from the actin filament. How are these differences correlated with the two types of motor activities in which these proteins engage?
- Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the microscope? Group of answer choices troponin actin myosin dystrophin Rather than innervating individual muscle fibers, motor neurons often innervate two or more muscle fibers. The motor neuron and the muscle fibers it innervates are together called a: Group of answer choices motor unit myofibril muscle fascicle motor fascia Fast glycolytic muscle fibers allow for relatively quick ATP energy production by splitting glucose (but eventually leads to fatigue), a process described as: Group of answer choices fermentation aerobic pathway anaerobic pathway ATP reserve useActivation of which pathway leads to a disinhibition of the thalamus and increased cortical activation? Basal nuclei D Cortex I GABA - Glutamate - Dopamine Striatum C B GPe A GPi/SNr SNC STN GPI/SNr Thalamus O Both B and C O B O A E LK C Fn AltList the 3 major classes of motor proteins:
- Outline the major neural adaptations a muscle undergoes to gain strength in the absence of muscle hypertrophy. ( Explain well with step by step Answer. )Using pyramidal motor tract as a template, describe the voluntary control of skeletal muscles being sure to use appropriate course terminology. Start from the very first neuron and end with neural innervation onto muscle fiber.Both the withdrawal reflex and the Golgi tendon reflex involve sensory signals that ultimately control the same type ofmotor neurons and both are protective. Explain how one reflex can cause muscle contraction while the other causes musclerelaxation.
- Part B - Electrical and Chemical Events of Muscle Contraction Match the type of articulation with the best description of either its functionality or arrangement of tissue. > View Available Hint(s) Reset Help Motor unit Also known as an 1Cimpulse, 1D a(n) is an electrical signal that is produced on Neurotransmitters excitable membrane such as muscle and nerve tissue. All-or-none principle are chemicals released at the synaptic terminal of a neuron that can transmit an Muscle fatigue Sm impulse to a muscle fiber. Action potential A muscle fiber is either contracted or it's not. This is the Recruitment A runner competing in the 50-yard dash has muscles in the legs that are undergoing Complete tetanus is described as àll the muscle fibers controlled by the same motor neuron. is the process by which a muscle produces more force to pick up a brick verses a feather. You are at the finish line of the Boston Marathon and see a runner fall a few yards from the finish line. This runner is…Describe in detail the events that happen at the neuromuscular junction leading to excitation-contraction coupling and muscle contraction.. Single line text.Describe the following Alpha gamma coactivation Golgi tendon apparatus