What does glutamic acid do to the membrane potentials of: Neurons - Muscles -
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Set Glutamic Acid to 60 (As seen in the picture)
What does glutamic acid do to the membrane potentials of:
- Neurons -
- Muscles -
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- 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 5Part 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…Ans Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filaments in place Ca binds to troponin 2. Occurs in smooth muscles only Oxidative type I muscle fibers 3. Is the primary source of Ca that drives muscle contraction Titin 4. Is a dense connective tissue that surrounds the entire muscle H zone 5. Anchors thin filaments together Z line 6. Have high concentration of mitochondria Sarcomere 7. The region of thick filaments that has no overlap with thin filaments Actin and myosin 8. Is the functional unit of skeletal muscle Epimysium 9. Occurs in skeletal and cardiac muscles Sarcoplasmic reticulum 10. Generate the mechanical force of a muscle through crossbridge cycling Matching between Column I and corresponding definition or function in column II ?
- Ans Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filanments in place Ca binds to troponin 2. Occurs in smooth muscles only Oxidative type I muscle fibers 3. Is the primary source of Ca that drives muscle contraction Titin 4. Is a dense connective tissue that surrounds the entire muscle H zone 5. Anchors thin filaments together Z line 6. Have high concentration of mitochondria Sarcomere 7. The region of thick filaments that has no overlap with thin filaments Actin and myosin 8. Is the functional unit of skeletal muscle Epimysium 9. Occurs in skeletal and cardiac muscles Sarcoplasmic reticulum 10. Generate the mechanical force of a muscle through crossbridge cyclingThe 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 acetylcholinesteraseAction 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 efferent fibers of somatic nervous system are located in the CNS which regulated skeletal muscle contraction. * F TNernst (equilibrium) Potential (mV) - 6.lol 0.07 0.125 D.094 lon Intracellular Extracellular Concentration (mM) Concentration (mM) K* 155 4 Nat 12 145 Ca** 104 1.5 4 120 D) If during the generation of an action potential in the skeletal muscle cell the membrane potential approaches +65 mV, membrane permeability for which ion likely plays a major role in membrane depolarization? Explain your choice."Motor neurons trigger action potentials in muscle cell membranes that open voltage-sensitive Ca2+ channels in T tubules, allowing extracellular Ca2+ to enter the cytosol, bind to troponin C, and initiate rapid muscle contraction", is true or false.
- Question 1 Question 7 Identify the molecule which binds calcium ions after they enter the synaptic bouton via VG Ca++ channels and facilitates exocytosis of acetylcholine (Ach) from synaptic vesicles. synaptic vesicle zippering plasma membrane troponin tropomyosin synaptotagmin O myosin O calmodulin calsequestrinActivation 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 AltA-DA- N == |-| Juárez de Ku BIOL 2402-Anatomy and Physiology I 0 1 2 3 Time (milliseconde) Normal 19. Identify the two major types of channels that open and close during an action potential in a neuron (see images below). the voltage-gated Na* channel and the voltage-gated Kichannel Page 9 of 14 No Spacing
