Homework Answers
Answer 1 on the second page. Myasthenia gravies is an autoimmune disorder in which neuron muscular junction is hampered. Receptors on sarcolemma gets embedded inside, thus ahead step 4 has been shown in the image, where acetylcholine binds to the receptors is hampered.
Answer.
A. Post synaptic neuron
B. Synaptic cleft
C. Acetylcholine receptors
D. Junctional fold of sarcolemma
Answer.
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Choc Muscle fiber nucleus Myofibrilot muscle fiber Figure 10.15. Details of the neuromuscular junction. Label the...
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine...
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine (neurotransmitter), ligand- channels, motor neuron, synaptic vesicles, and arrival of nerve impulse (AP) Ca2+
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine...
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine (neurotransmitter), ligand-channels, motor neuron, synaptic vesicles, and arrival of nerve impulse (AP) Ca2 Ca2+
Sequence of Events at the Neuromuscular Junction The site where a motor neuron excites a skeletal...
Sequence of Events at the Neuromuscular Junction The site where a motor neuron excites a skeletal muscle fiber is called the neuromuscular junction. This activity will test your understanding of the sequence of events that occur at the neuromuscular junction. Using the images for help, place in the correct order of occurrence from left to right the events that occur at the neuromuscular junction after the action potential reaches the axon terminal. Termination of Neural Transmission Which of the following...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine receptors open B. Voltage-gated Na+ channels open in the muscle cell membrane near the neuromuscular junction C. Tropomyosin rotates into the groove of the thin filament (out of the way of the myosin binding site) D. Depolarization of motoneuron axon terminal E. Ca2+ dissociates from troponin F. [Ca2+] rises in the muscle cell cytoplasm G. An EPSP occurs in the muscle cell H. Myosin...
Chapters 6-8: Muscle and Neuromuscular Junction 1 Myofibrils A Excitatory transmitter that excites muscle fiber membrane...
Chapters 6-8: Muscle and Neuromuscular Junction 1 Myofibrils A Excitatory transmitter that excites muscle fiber membrane 2 Titin B Required to cause smooth muscle relaxation 3 Actin filaments C Thousands grouped together to form the muscle fiber 4 Tropomyosin D Nerve fiber sympase at muscle fiber 5 Sarcomere E Block active sites on actin filaments to block myosin attraction Acetylcholine F activates myosin cross-bridges in smooth muscle 7 Neuromuscular junction G Muscle sections between Z discs that individually contract 8...
6. Draw the Neuromuscular junction and label the Following structures. Include the three substances that interfere...
6. Draw the Neuromuscular junction and label the Following structures. Include the three substances that interfere with normal muscle contraction (both toxic and therapeutic). ID synapse, neurotransmitter synaptic cleft, axon terminal, synaptic bulb, synaptic vesicles, motor end plate, acetylcholine receptors, Junctional folds, acetylcholinesterase. 7. Describe or draw each of the contractile proteins (actin/myosin) and regulator proteins (troponin & tropomyosin). Explain the set up and how each participate in muscle contraction. Name the protein that attaches the sarcomere to the sarcolemma...
Choose any and all appropriate answers: How is the muscular contraction stopped (i.e.: how does a muscle relax after contraction)? The brain stops sending the nerve impulse that commands the muscle to...
Choose any and all appropriate answers: How is the muscular contraction stopped (i.e.: how does a muscle relax after contraction)? The brain stops sending the nerve impulse that commands the muscle to contract, interrupting communication at the neuromuscular junction Acetylcholineesterase (AChE) is released into the synaptic cleft to destroy any remaining Acetylcholine No mechanism is necessary. When the antagonist begins to contract, it forces relaxation and stretch of the agonist muscle. Relaxation occurs as the myosin heads are "snapped" off...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and thin filaments. 2. True or False: In skeletal muscle cells, the sarcoplasmic reticulum is continuous with the sarcolemma. 3. The interval between two Z lines is called a ________________. 4. At a neuromuscular junction, the space between the plasma membrane of the synaptic terminal and the motor end plate is the __________________. 5. An action potential (electric impulse) is transferred from a...
Answer Thi Q. thank You The Nervous System edit) 1. The junction between one neuron and the next, or between a neuron and an effector is called: A) A synapse 8) A dendrite C) A neuotransmiter D )...
Answer Thi Q. thank You
The Nervous System edit) 1. The junction between one neuron and the next, or between a neuron and an effector is called: A) A synapse 8) A dendrite C) A neuotransmiter D ) A ventricle E) None of the above 2. A fast excitatory synapses follows this order A) (1) neurotransmiter released (2) diftused across the synaptic cleft to a receptor protein (3) binding of the transmitter opens pores in the ion channels and positive...
KEY TERMS March the numbered form with the definition that is it be definition the responding...
KEY TERMS March the numbered form with the definition that is it be definition the responding sumber in front of the appropriate 40. excitatory postsynaptic potential 21. resting potential 22 on leakage channels 23. equilibrium potential -24 graded potential 25. gated ion channels 26. depolarization 27. hyperpolarization Sensory neurons 2. central nervous system 3. motor neurons 4. intercurons 5. peripheral nervous system 6. somatic motor neurons *7. autonomic motor neurons 8. sympathetic 9. parasympathetic 10. cell body all dendrites 12....
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine (neurotransmitter), ligand- channels, motor neuron, synaptic vesicles, and arrival of nerve impulse (AP) Ca2+
Label the picture of a neuromuscular junction: Junctional fold, synaptic cleft, calcium channels, muscle fiber, acetylcholine (neurotransmitter), ligand-channels, motor neuron, synaptic vesicles, and arrival of nerve impulse (AP) Ca2 Ca2+
Sequence of Events at the Neuromuscular Junction The site where a motor neuron excites a skeletal muscle fiber is called the neuromuscular junction. This activity will test your understanding of the sequence of events that occur at the neuromuscular junction. Using the images for help, place in the correct order of occurrence from left to right the events that occur at the neuromuscular junction after the action potential reaches the axon terminal. Termination of Neural Transmission Which of the following...
Chapters 6-8: Muscle and Neuromuscular Junction 1 Myofibrils A Excitatory transmitter that excites muscle fiber membrane 2 Titin B Required to cause smooth muscle relaxation 3 Actin filaments C Thousands grouped together to form the muscle fiber 4 Tropomyosin D Nerve fiber sympase at muscle fiber 5 Sarcomere E Block active sites on actin filaments to block myosin attraction Acetylcholine F activates myosin cross-bridges in smooth muscle 7 Neuromuscular junction G Muscle sections between Z discs that individually contract 8...
6. Draw the Neuromuscular junction and label the Following structures. Include the three substances that interfere with normal muscle contraction (both toxic and therapeutic). ID synapse, neurotransmitter synaptic cleft, axon terminal, synaptic bulb, synaptic vesicles, motor end plate, acetylcholine receptors, Junctional folds, acetylcholinesterase. 7. Describe or draw each of the contractile proteins (actin/myosin) and regulator proteins (troponin & tropomyosin). Explain the set up and how each participate in muscle contraction. Name the protein that attaches the sarcomere to the sarcolemma...
Answer Thi Q. thank You
The Nervous System edit) 1. The junction between one neuron and the next, or between a neuron and an effector is called: A) A synapse 8) A dendrite C) A neuotransmiter D ) A ventricle E) None of the above 2. A fast excitatory synapses follows this order A) (1) neurotransmiter released (2) diftused across the synaptic cleft to a receptor protein (3) binding of the transmitter opens pores in the ion channels and positive...
KEY TERMS March the numbered form with the definition that is it be definition the responding sumber in front of the appropriate 40. excitatory postsynaptic potential 21. resting potential 22 on leakage channels 23. equilibrium potential -24 graded potential 25. gated ion channels 26. depolarization 27. hyperpolarization Sensory neurons 2. central nervous system 3. motor neurons 4. intercurons 5. peripheral nervous system 6. somatic motor neurons *7. autonomic motor neurons 8. sympathetic 9. parasympathetic 10. cell body all dendrites 12....
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