The State of Contraction of Vascular Smooth Muscle Is Determined

question 2

Multiple Choice

The state of contraction of vascular smooth muscle is determined most directly by the

• A) Occupancy of receptors for vasoconstrictors or vasodilators
• B) State of phosphorylation of myosin light chains
• C) Activation of acto-myosin cross bridges by Ca²⁺
• D) Mem brane potential of the sm ooth m uscle cells
• E) Electrical coupling of smooth muscle cells through gap junctions

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Definitions:

Explosion

A sudden and violent release of energy that results in a rapid increase in volume and release of gases, often accompanied by heat, light, and sound.

Energy

The quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.

PETN

Pentaerythritol tetranitrate, a high explosive compound used in a variety of military, industrial, and mining applications.

Pentaerythritol Tetranitrate

An explosive compound better known as PETN, used both in military and industrial applications, with a formula of C5H8N4O12.