Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Chapter 41, Problem 5FIB

Summary Introduction

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Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Motor neurons innervate muscle fibers at specialized synapses called_______ . The release of acetylcholine at these synapses ultimately triggers an action potential in the muscle fiber, which invades the interior of the fiber through_____ and stimulates the release of calcium ions from the_______ .

Which statement or statements describe the role of calcium in the stimulation of muscle fibers? Select all that apply. When the action potential reaches the axon terminals of a neuron, calcium channels open and calcium floods into the axon terminal, triggering the release of synaptic vesicles. When calcium ions flood out of the sarcoplasmic reticulum, they bind troponin molecules and troponin removes tropomyosin from the active sites on thin filaments. When myosin thick filaments are walking along actin thin filaments (the cross bridge cycle), calcium ions must be available to bind to myosin so that it can let go of the thin filaments and take another "step". When synaptic vesicles fuse with the plasma membrane of axon terminals, calcium is released into the synaptic cleft and binds to receptors in the motor end plate.

place the events that occur during muscle contraction and relaxation in their proper order. Insert numbers in the paces provided to order the events in the proper sequence. _____ A. An electrical impulse travels over the sarcolemma and inward along the T-tubules, causing sacs in the sarcoplasmic reticulum to release calcium. _____ B. The release of ACh stops and acetylcholinesterase breaks down any remaining ACh. _____ C. Troponin and tropomyosin prevent the myosin heads from grasping the thin filament, and the muscle fiber relaxes. _____ D. An electrical impulse causes small vesicles at the end of a motor neuron to release the neurotransmitter acetylcholine (ACh). _____ E. Calcium binds with the troponin on the actin filament, exposing attachment points. _____ F. ACh diffuses across the synaptic cleft, where it stimulates receptors in the sarcolemma. _____ G. Calcium ions are pumped back into the sarcoplasmic reticulum. _____ H. The myosin heads of the…

Answer 2

Question

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Answer 3

Question

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Answer 4

Question

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Answer 5

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

Answer 6

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

Answer 7

Chapter 41, Problem 5FIB

Summary Introduction

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

Answer 8

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Answer 11

Ch. 41.1 - Prob. 1TC Ch. 41.1 - Prob. 2TC Ch. 41.1 - Prob. 1CSC Ch. 41.1 - White meat or dark? It seems almost everyone has a...Ch. 41.1 - Prob. 1CYL Ch. 41.1 - Prob. 2CYL Ch. 41.1 - Prob. 3CYL Ch. 41.1 - explain how the nervous system causes contraction...Ch. 41.2 - describe the similarities and differences between...Ch. 41.2 - compare cardiac and smooth muscle to skeletal...

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

Solution Summary: The author explains that motor neurons innervate muscle fibers at specialized synapses called neuromuscular junctions and trigger the release of acetylcholine.

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Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Chapter 41 Solutions

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

Solution Summary: The author explains that motor neurons innervate muscle fibers at specialized synapses called neuromuscular junctions and trigger the release of acetylcholine.

Concept explainers

Videos

Introduction: Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.

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Chapter 41 Solutions

Introduction:

Neuron is also known as nerve cell and is defined as the cell that carries electrical impulses. It serves as the basic unit of the nervous system. It is composed of the axon, cell body, and dendrites.