The Tubes ended in 1986.
Loose Tubes ended in 1990.
The branching tubes within the lungs end at small alveoli.
The xylem tracheids and vessels placed end to end like tubes in plants help in the conduction of water.
The answer is: Bronchi
The two tubes are the Bronchili and these take air to the alveoli where oxygen is used up and converted into co2
at the end of the fallopian tubes, you have the fimbriae. They actively pull the ovum inside the fallopian tubes. Inside the fallopian tubes you have the cilia to to push the ovum towards the uterus.
alveoli
fimbriae
alveoli
Alveoli
In the end of the tubes in the North.
Alveoli