The reason behind the contraction of smooth muscles without any external stimulation. Introduction: Smooth muscle is an involuntary and non-striated muscle that lines the circulatory system, and digestive system . The action potential is generated after sending an electrical impulse down the axon by the neuron. The neurons tend to communicate with each other by generating action potential.

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Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 11, Problem 2CT

Summary Introduction

To determine:

The reason behind the contraction of smooth muscles without any external stimulation.

Introduction:

Smooth muscle is an involuntary and non-striated muscle that lines the circulatory system, and digestive system. The action potential is generated after sending an electrical impulse down the axon by the neuron. The neurons tend to communicate with each other by generating action potential.

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Calmodulin is found in smooth muscle cells and performs a similar function to troponin in striated muscle fibers. However, calmodulin not only gets activated by Ca2+ but also slows the release of Ca2+ from the sarcoplasmic reticulum. How might this difference relate to the different kinds of contractions smooth muscles do in comparison to striated muscles?

Suppose a substance were to prevent calcium ions from being returned to the sarcoplasmic reticulum in a skeletal muscle cell. Predict how a muscle cell would respond to being exposed to the supposed compound after a single stimulus by the motor neuron

Use the following information to answer the next question: In a classic experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that sends a message to a muscle fibre is suspended. One end is attached to the muscle fibre, and the free end of the muscle fibre is attached to a mass. If an electrical stimulus is sufficient to cause an impulse in the neuron, the muscle will contract and lift the mass. The following data were obtained from the experiment. Strength of Stimulus (mV) Mass Lifted by Muscle (g) 1 2 10 3 10 4 Analyze the data and answer the following questions: 1. a. Define threshold potential and illustrate your definition with a specific example. What is the minimum stimulus required to reach the threshold potential for this neuron? Answer: Explain the all-or-none response. Predict the mass that could be lifted at 4 mV of stimuli. Explain your answer. b. Answer: Choose a specific example of a sensory receptor, and…

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Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 11, Problem 2CT

Summary Introduction

To determine:

The reason behind the contraction of smooth muscles without any external stimulation.

Introduction:

Smooth muscle is an involuntary and non-striated muscle that lines the circulatory system, and digestive system. The action potential is generated after sending an electrical impulse down the axon by the neuron. The neurons tend to communicate with each other by generating action potential.

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Answer 3

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Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 11, Problem 2CT

Summary Introduction

To determine:

The reason behind the contraction of smooth muscles without any external stimulation.

Introduction:

Smooth muscle is an involuntary and non-striated muscle that lines the circulatory system, and digestive system. The action potential is generated after sending an electrical impulse down the axon by the neuron. The neurons tend to communicate with each other by generating action potential.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 11, Problem 2CT

Summary Introduction