A medical imaging technique that uses high-frequency sound waves to create images of the inside of the body.

A type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays, commonly used in sterilization and…

Light with wavelengths shorter than visible light, known for its effects on the skin, including sunburn, and its use in…

A type of inflorescence in which the flower stems all arise from a common point, resembling an umbrella.

The flexible, tubular structure connecting a fetus to the placenta, containing blood vessels that carry oxygen and nutrients.

The navel or belly button, the scar left after the umbilical cord is cut after birth.

A referee or official in sports who oversees the proper conduct of the game.

The layer of vegetation beneath the main canopy in a forest, typically consisting of smaller trees, shrubs, and plants.

A type of appendage found in some eukaryotic cells, typically involved in movement or sensing environmental stimuli.

A type of genetic recombination that occurs when homologous chromosomes align imperfectly, leading to unequal exchange of genetic material.