Calcium That Is Needed to Activate Cross-Bridging in Smooth Muscle

question 139

Multiple Choice

Calcium that is needed to activate cross-bridging in smooth muscle mainly comes from

• A)endoplasmic reticulum.
• B)extracellular fluid.
• C)intracellular fluid.
• D)dense bodies.

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Definitions:

Nerve

A bundle of fibers that transmits electrical impulses between the brain and other parts of the body, facilitating communication within the nervous system.

Synaptic Vesicle

Membrane-bound structures in nerve cells that store neurotransmitters, which are released into the synapse during neurotransmission.

Resting State

A functional connectivity MRI (fMRI) technique that measures brain activity by detecting changes associated with blood flow when the brain is at rest.

Electrical Charge

A physical property that causes matter to experience a force when placed in an electromagnetic field, categorized as positive, negative, or neutral.