Gaseous excange takes place in the alveoli of the Lungs during respiration
flat for easy diffusion
Diffusion
Specialized cells.
External respiration refers to the act of mechanically pulling air into the lungs via breathing. Internal respiration is the exchange of gasses from blood to tissue and vice versa.
plasma cells
There are many substances they exchange, but the main ones are oxygen from the blood to the cells and CO2 from the cells to the blood.
In an adult organism most cells are specialized (only stem cells aren't). The types of specialized cells include blood cells, muscle cells, nerve cells, skin cells, liver cells, etc. Cells are orgainzed into organs, which collectively form bodies.
External Respiration is where gasses are absorbed into the blood through the alveolar capillary beds. Internal respiration is where the gasses are transferred into the cells from the blood.
Specialized cells.
A specialized function shared by the many cells lining the lungs and the lumen of the gut is increased exchange surface provided by their membranes. Interstitial fluid provides for the exchange of materials between blood and body cells.
yes
Hemoglobin is a metalloprotein, containing iron, that is within red blood cells and binds to gasses like oxygen in order to transport those gasses in the blood.
in the blood
white blood cells
It is specialized cells
Gasses are exchanged mostly through the cells
Oxygen and food
stem cells
they don't have a nucleus.