ampulli

Ampullae are small, flask-shaped structures found in various parts of the body, particularly in the respiratory and digestive systems. They are characterized by their narrow neck and wide base, which allows for the expansion and contraction of their contents. Ampullae play crucial roles in the body's functions, such as regulating the flow of substances and facilitating the movement of materials.

In the respiratory system, ampullae are found in the bronchioles and are involved in the regulation of airflow. They help to maintain a constant airflow rate by expanding and contracting in response to changes in lung volume. This mechanism is essential for the efficient exchange of gases in the lungs.

In the digestive system, ampullae are present in the pancreas and are responsible for the storage and release of digestive enzymes. The narrow neck of the ampullae allows for the controlled release of enzymes into the duodenum, where they aid in the digestion of food.

Ampullae are also found in the urinary system, where they are involved in the regulation of urine flow. They help to maintain a constant urine output by expanding and contracting in response to changes in blood volume and pressure.

The structure and function of ampullae are essential for the proper functioning of various bodily systems. Their unique shape and location allow them to perform specific tasks that are vital for the body's overall health and well-being.