2007-01-21 08:28:30 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Because they are made up of tissues called respiratory epithelium, which is acutally PCCE tissue (pseudostratified ciliated columnar epithelium). Epithelial tissue is spongy by nature (human skin is epithelial and we are pretty spongy).
The lungs also contain a number of small air sacs called alveoli in which oxygen and carbon dioxide are exchanged.
All of this makes up lung tissue. Hope this helps!
2007-01-21 08:36:16 · answer #1 · answered by mtnflower43 4 · 0⤊ 0⤋
The inside of the lung is like a little quilt. The places where the stitching is on a quilt, are the places where oxygen enters and exits the lungs to keep the cells healthy and alive.
The material is light weight, flexible, stretchy, etc. so it can provide room to inhale air, and absorb that into the body.
2007-01-21 16:36:40 · answer #2 · answered by Alley S. 6 · 0⤊ 0⤋
The type of tissue from which ii is made up of is spongy in nature.
2007-01-21 18:24:10 · answer #3 · answered by moosa 5 · 0⤊ 0⤋
Because their structure, when viewed microscopically, is, in fact, like a sponge. Mostly air sacks (alveoli) surrounded by supporting tissue. Check out the image.
2007-01-21 16:36:54 · answer #4 · answered by Labsci 7 · 0⤊ 0⤋
Because they are full of tiny air sacs called alveoli.
2007-01-21 16:33:46 · answer #5 · answered by Anonymous · 0⤊ 0⤋
the lungs is like a sponge, it absorb oxygen.
2007-01-21 16:34:35 · answer #6 · answered by francis j 2 · 0⤊ 0⤋