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Muscle contraction is initiated by signals from the nervous system, specifically through motor neurons that release the neurotransmitter acetylcholine at the neuromuscular junction. This chemical signal triggers an action potential in the muscle fiber, leading to the release of calcium ions from the sarcoplasmic reticulum. The presence of calcium enables the interaction between actin and myosin filaments, resulting in muscle contraction. Thus, the nervous system plays a crucial role in coordinating and regulating muscle activity.

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The portion of the nervous system that most closely associated with the contraction of cardiac muscle is The?

The portion of the nervous system that is most closely associated with the contraction of the cardiac muscle is the autonomic nervous system.


What substance is released by the nervous system and excites muscle cells?

Acetylcholine is the neurotransmitter released by the nervous system that excites muscle cells, leading to muscle contraction.


What controls your smooth muscle?

Smooth muscle is controlled by the autonomic nervous system, which includes both sympathetic and parasympathetic divisions. The sympathetic nervous system typically causes smooth muscle contraction, while the parasympathetic nervous system usually promotes relaxation of smooth muscle. Additionally, hormones and local factors can also influence the contraction and relaxation of smooth muscle.


Which type of muscle CANNOT contract without being stimulated by the nervous system?

Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.


When the nervous system signals a muscle to contract what ion channels open?

When the nervous system signals a muscle to contract, calcium channels open in the muscle cell membrane. Calcium ions then flow into the muscle cell, triggering a series of biochemical events that eventually lead to muscle contraction.

Related Questions

The portion of the nervous system that most closely associated with the contraction of cardiac muscle is The?

The portion of the nervous system that is most closely associated with the contraction of the cardiac muscle is the autonomic nervous system.


What systems are in a muscle contraction?

skeletal system, Digestive and Nervous system.


What system are involved in a muscle contraction?

skeletal system, Digestive and Nervous system.


The portion of the nervous system that is most closely associated with the contraction of the cardiac muscle is the?

autonomic nervous system


What is a neurogenic muscle?

Muscle in which contraction is initiated in the central nervous system is said to be neurogenic.


What substance is released by the nervous system and excites muscle cells?

Acetylcholine is the neurotransmitter released by the nervous system that excites muscle cells, leading to muscle contraction.


What nervous system controls the skeletal muscle contractions?

The central nervous system supplies the body and muscle contraction. Striated muscle (skeletal muscle) contract voluntary with exception of the heart which is striated involuntary smooth muscle.


What role does the nervous system play in muscle contraction?

controls the muscles by the motor nurons.


Neurotransmitter used to cause muscle contraction?

A neurotransmitter that causes muscle movement is called Acetylcholine. Acetycholine acts as on both the central nervous system and the peripheral nervous system.


What controls your smooth muscle?

Smooth muscle is controlled by the autonomic nervous system, which includes both sympathetic and parasympathetic divisions. The sympathetic nervous system typically causes smooth muscle contraction, while the parasympathetic nervous system usually promotes relaxation of smooth muscle. Additionally, hormones and local factors can also influence the contraction and relaxation of smooth muscle.


Which type of muscle CANNOT contract without being stimulated by the nervous system?

Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.


How does the muscular system coordinate the contraction of the whole muscle?

The muscular system coordinates the contraction of the whole muscle through a process called excitation-contraction coupling. When a signal from the nervous system reaches a muscle fiber, it triggers the release of calcium ions, which bind to proteins in the muscle cells and initiate the contraction process. This coordinated effort allows the entire muscle to contract in a synchronized manner, enabling movement and strength.