Vesicais

Vesicais is a term used in Portuguese that can describe sac-like structures or relate to the urinary bladder, depending on context. In English-language anatomy, vesicular or vesical forms appear in two broad senses: cellular biology and clinical anatomy. In cells, vesicles are small, membrane-bound sacs that transport and store cargo within the endomembrane system. They bud from or fuse with organelles such as the endoplasmic reticulum, Golgi apparatus, plasma membrane or lysosomes. Common vesicle types include transport vesicles, secretory vesicles, lysosomal vesicles and synaptic vesicles. Exosomes are extracellular vesicles formed by multivesicular bodies. Vesicles play key roles in secretion, receptor trafficking, metabolism, and intercellular communication.

In clinical anatomy, vesical relates to the urinary bladder. Terms such as vesical calculus (bladder stone), vesical fistula (an abnormal connection involving the bladder), and vesical venous plexus describe structures and conditions tied to the bladder. The urinary bladder stores urine, and its capacity, compliance and outlet function are central to lower urinary tract physiology. In male reproductive anatomy, the seminal vesicles (vesículas seminais) are paired glands that contribute to semen production; they are not vesicles of the bladder but are anatomically and clinically associated with the urinary tract.

The word vesical is also used in various compound terms across medicine, emphasizing sacs or bladder-related anatomy. Understanding the distinction between vesicle (a small sac within cells) and vesical or vesicular (bladder-related or pertaining to sacs) helps avoid confusion.