Gosh, I think many things fit this description but the one that comes to mind is the circulatory system. I begins with large vessels (arteries) and continues to branch into smaller and smaller tubes (capillaries) like the branches of a tree.
bronchi
it divides into two bronchis and the the aveioli
Bronchioles
bonchi
bronchioles
it divides into two bronchis and the the aveioli
The bronchial tubes in the lungs divide into smaller branches known as bronchioles, which further subdivide into tiny air sacs called alveoli. This branching pattern resembles the structure of a tree, with the bronchial tubes acting as the trunk and the alveoli as the leaves where gas exchange occurs.
By I only ought be able skills and tomorrow morning to be able skills
The renal pelvis is not divided into small tubes. It is a funnel-shaped structure in the kidney that collects urine from the calyces and transports it to the ureter for excretion. The calyces are the structures that are divided into smaller tubes within the kidney.
Bronchioles
The bronchial tubes (or bronchi) are the large tubular structures within the lungs. These carry air into the lungs from the trachea. They branch into smaller tubes called bronchioles, and then to the smallest tubes that contain the alveoli (air sacs) of the lungs.
The pulmonary system resembles the braches of a tree. It's sometimes called the pulmonary tree.