Katydid's Respiratory System
How Katydid's Breathe
The Katydid's Respiratory system involves the diffusion of oxygen directly from the atmosphere into air-filled tubes. All insects are require cellular respiration, they need oxygen from their surroundings in order to survive and obtain energy. Respiration uses oxygen and fuel (food) to produce energy for cells. The products of respiration are carbon dioxide and water. Cells use oxygen to break down glucose, which is then stored as ATP. The ATP molecules then provide the cell energy for all life processes. Katydids use glucose that is contained in food to create energy from nutrients into ATP, which takes place in the mitochondria. Phosphate chains that create amino acid are broken up and used as energy, and to recreate these bonds the Katydid must eat. Thus,diffusion occurs through air and is more effective than the diffusion through water (300,000 times more) or tissues (1,000,000 times more). Oxygen is the main source of energy for a Katydid.
The respiratory system in insects is called the tracheal system.The tracheal system consists of 10 pairs of spiracles, located on the side of the Katydid. Of the ten pairs, 2 of them are located in the thorax and 8 pairs are abdominal. The spiracles are guarded by very thin hairs to keep foreign particles out and that function to open or close the spiracles. The spiracles open into small spaces called the atria that continues as air tubes called the tracheae.
The cells secrete protein thickenings around the tube that gives support to the tubes. The ends of the tracheoles are filled with fluid. This end enters into the tissue. The trachea are water-filled due to the permeable membrane of the surrounding tissues. As respiration occurs in the cell, the products of respiration add up in the cell and this forces the fluid in the tracheoles to enter the tissue. Water is exited by, the creation of pressure in the tubes and draws in more oxygen to the tissues where it is needed.The carbon dioxide produced is detected by receptors that detect chemicals, which makes the muscles near the spiracles open and close. This pushes the air out. The last six pairs of spiracles are involved in expiration of air.
(1)http://creationwiki.org/Katydid
(2)http://phys.org/news97034359.html
The respiratory system in insects is called the tracheal system.The tracheal system consists of 10 pairs of spiracles, located on the side of the Katydid. Of the ten pairs, 2 of them are located in the thorax and 8 pairs are abdominal. The spiracles are guarded by very thin hairs to keep foreign particles out and that function to open or close the spiracles. The spiracles open into small spaces called the atria that continues as air tubes called the tracheae.
The cells secrete protein thickenings around the tube that gives support to the tubes. The ends of the tracheoles are filled with fluid. This end enters into the tissue. The trachea are water-filled due to the permeable membrane of the surrounding tissues. As respiration occurs in the cell, the products of respiration add up in the cell and this forces the fluid in the tracheoles to enter the tissue. Water is exited by, the creation of pressure in the tubes and draws in more oxygen to the tissues where it is needed.The carbon dioxide produced is detected by receptors that detect chemicals, which makes the muscles near the spiracles open and close. This pushes the air out. The last six pairs of spiracles are involved in expiration of air.
(1)http://creationwiki.org/Katydid
(2)http://phys.org/news97034359.html