Gill

A respiratory organ found in many aquatic animals, extracting oxygen from water. Gills are typically composed of thin, vascularized filaments or lamellae, increasing the surface area for efficient gas exchange. Water flows over the gills, allowing oxygen to diffuse into the bloodstream and carbon dioxide to diffuse out. The structure and function of gills vary greatly depending on the animal's species and the surrounding environment, including their surface area, protective structures, and mechanisms of ventilation to optimize oxygen absorption.

Gill meaning with examples

• The fish used its gills to extract oxygen from the flowing river, allowing it to breathe underwater. The bright red color of the gills indicated healthy blood flow. We could see the gill covers moving as the fish filtered water through its gills. Divers must understand gill structures for the fish to survive. The gills are vital for the fish’s survival.
• After carefully examining the dissected fish, the biology student sketched the intricate structure of the gills and their delicate filaments for later study. The scientist focused on the anatomy of the gills. The student could observe the process that the gills performed. They discovered different kinds of gills depending on the species. The gills allowed the fish to breathe.
• The marine biologist studied the efficiency of various gill designs in different species of ocean fish, seeking to understand how they adapted to varying oxygen levels. She learned about the gill's different adaptations. The biologist examined many kinds of gills. Oxygen is absorbed via the gills. The gills are important for understanding the ocean's ecosystem.
• During an underwater exploration, the diver observed a large school of fish, noting the rhythmic movement of their gill covers as they processed the water, a vital observation for understanding aquatic life. The diver observed the gills as the fish swam. The fish used the gills to filter the water. The gills were used in a complex structure. Gills are one of the most important survival adaptations.
• The fisherman cleaned his catch, carefully removing the gills from the trout to preserve its meat. The angler removed the gills. He removed the internal organs. The gills were not the prime focus. He was more concerned with the meat. The gills were removed during the cleaning of the fish.