Esophageal Varices Are Most Commonly Caused by a Malfunction of the Lower

question 40

True/False

Esophageal varices are most commonly caused by a malfunction of the lower esophageal sphincter.

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Definitions:

Opaque

Not allowing light to pass through; not transparent or translucent.

Palisade Mesophyll

The layer in the leaf where most photosynthesis takes place, comprised of tightly packed cells containing chloroplasts, effectively capturing light energy. This is a rephrased and new definition for the "Palisade Layer."

Guard Cells

Specialized cells in the epidermis of leaves, stems, and other organs that regulate gas exchange by opening and closing stomatal pores.

Stomata

Tiny openings or pores often found on the underside of leaves that are involved in gas exchange and transpiration in plants.