Drooping of the Upper Eyelids Is Called

question 73

Multiple Choice

Drooping of the upper eyelids is called:

• A) blepharitis.
• B) blepharoptosis.
• C) chalazion.
• D) conjunctivitis.

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Definitions:

Hyperpolarization

An increase in a cell's membrane potential, making it more negative inside compared to the outside and further from the threshold that causes action potentials.

Absolute Refractory Period

A period immediately following the stimulation during which a nerve or muscle is unresponsive to further stimulation.

Second Messenger System

A method of cellular signaling where the signal from a first messenger is transferred to a secondary molecule inside the cell to elicit a physiological change.

Protein Kinase

An enzyme that modifies other proteins by chemically adding phosphate groups to them, thereby altering their function.