Homework Answers
Neuromuscular junction
The neuromuscular junction is the gap or chemical synapse between a motor neuron and muscle fibre. The axon of the motor neron connects with the muscle fibres.
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Question 47 1 p Where the axon of a motor neuron connects with the muscle fibers...
Muscle movement 1 pt Spinal cord Dorsal The image to the right depicts a motor neuron...
Muscle movement 1 pt Spinal cord Dorsal The image to the right depicts a motor neuron along with all of the muscle fibers it innervates. What is this called? Cell body of motor neuron Muscle fibers Ventral O Motor axon O Motor unit O Neuromuscular junction Muscle
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...
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers...
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers neuromuscular junction skeletal muscle fibers spinal cord
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its...
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its description/function: transverse tubule l. connective tissue wrapping around a muscle fiber sarcoplasmic reticulum 2. organelle packed with myofilaments epimysium transverse tubule and its flanking terminalcisternae d. thin filament 4 invagination of the sarcolemma 5. connective tissue wrapping around fascicle myofibril 6. the region of sarcolemma across from the axon terminal f triad at the neuromuscular junction endomysium 7. consists of actin, troponin, and tropomyosin...
Neuron Signaling and Muscle Contraction 1) “Dissect” the various parts of an action potential by describing...
Neuron Signaling and Muscle Contraction 1) “Dissect” the various parts of an action potential by describing the status (active or nonactive) of the voltage-gated sodium channel, voltage-gated potassium channel, sodium/potassium pump, and overall voltage and/ or voltage range (in millivolts, or mV) for each of the following. A) Resting membrane (prior to the initiation of an action potential) B) just before threshold to just after threshold (Depolarization) C) Rising phase of the action potential D) Falling phase of the action...
Label the parts of a neuron in Figure 13.2 Exercise 1: Neuron Structure AXON Node of...
Label the parts of a neuron in Figure 13.2 Exercise 1: Neuron Structure AXON Node of Ranvier Dendites -2 Niss/ bodies RAxo dendritic -Blinapon sapete Gunction) - Axonic Angrening mydin hilock schwann.cell Yxonic timmar Figure 13.2: Neuron model. Neurons may be classified according to their differences in structure or in function. Functionally, there are three types of neurons. A change in the environment, such as a change in temperature or pressure against the skin, is detected by receptors associated with...
1. What channels or carriers are NOT found at the axon to the axon terminal? Select...
1. What channels or carriers are NOT found at the axon to the axon terminal? Select one: a. Na+ leaky channels b. Cl- gated channels c. Na+ gated channels d. Na+-K+ ATPase e. None of the above 2. What is TRUE about action potential in the neuron? There may be more than one answer. Select one or more: a. At resting membrane potential (-70mV), the inactivation gate of the Na+ channel is closed while the activation gate is opened. b....
Question 31 A highly folded motor end plate would be typical of the: postsynaptic neuron axonal...
Question 31 A highly folded motor end plate would be typical of the: postsynaptic neuron axonal terminal of the motor neuron the sarcolemma of the muscle fiber
The innervation ratio of a motor unit can tell us 1)How many skeletal muscle fibers are...
The innervation ratio of a motor unit can tell us 1)How many skeletal muscle fibers are innervated by a single alpha motor neuron 2) Whether the muscle involved can execute fine motor movements 3) How big the muscle is 4) I and II 5) I and III
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...
Muscle movement 1 pt Spinal cord Dorsal The image to the right depicts a motor neuron along with all of the muscle fibers it innervates. What is this called? Cell body of motor neuron Muscle fibers Ventral O Motor axon O Motor unit O Neuromuscular junction Muscle
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...
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers neuromuscular junction skeletal muscle fibers spinal cord
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its description/function: transverse tubule l. connective tissue wrapping around a muscle fiber sarcoplasmic reticulum 2. organelle packed with myofilaments epimysium transverse tubule and its flanking terminalcisternae d. thin filament 4 invagination of the sarcolemma 5. connective tissue wrapping around fascicle myofibril 6. the region of sarcolemma across from the axon terminal f triad at the neuromuscular junction endomysium 7. consists of actin, troponin, and tropomyosin...
Label the parts of a neuron in Figure 13.2 Exercise 1: Neuron Structure AXON Node of Ranvier Dendites -2 Niss/ bodies RAxo dendritic -Blinapon sapete Gunction) - Axonic Angrening mydin hilock schwann.cell Yxonic timmar Figure 13.2: Neuron model. Neurons may be classified according to their differences in structure or in function. Functionally, there are three types of neurons. A change in the environment, such as a change in temperature or pressure against the skin, is detected by receptors associated with...
Question 31 A highly folded motor end plate would be typical of the: postsynaptic neuron axonal terminal of the motor neuron the sarcolemma of the muscle fiber
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