GENERAL HISTOLOGY

Detailed explanation-1: -Tracheoles are about 1 µm in diameter, and they convey oxygen to cells while providing a means for carbon dioxide to escape. Tracheoles branch from the larger tracheae (which can be several mm in diameter) much like capillaries branch from arteries, or twigs from branches of a tree.

Detailed explanation-2: -Human lungs are efficient respiratory surfaces because of the thin and large surface for easy diffusion, moist air sacs with mucus for dissolving the gases. In addition, the air sacs are surrounded by a network of blood capillaries with a good supply of blood so that more exchange of gases can happen.

Detailed explanation-3: -The structure of the tracheal system, with its small diameter and large surface area, enables efficient gas exchange. The tracheae are lined with a permeable cuticle that allows gases to diffuse into and out of the insect’s body.

Detailed explanation-4: -Trachea. Bronchi (BRAWN-kai), the large tubes that connect your windpipe and lungs. Bronchioles (BRAWN-key-ols), the lower portions of your bronchi that get smaller and spread out through your lungs. 20-Sept-2021