The Grasshopper Circulatory System

1568 Words 7 Pages
Register to read the introduction… The constituent components of grasshopper circulatory system consist of blood vessels, heart, and aorta. The blood of grasshopper does not contain haemoglobin that is not red. The blood function is only to transport nutrients and metabolic waste from the organs to the malpighian tubules for excretion (Brian, 2014). Likewise, the transportation of carbon dioxide and oxygen is held by trachea system. The heart vessel serves as a pump. Ostia, the valves of the heart, will function as the entry of the blood to the heart. The aorta have hollow in front, and also a long vessel structure is located in front of heart vessel dorsally. The dorsal vessel is extending from the hind end through the thorax to the head. This is called continuous tube with two regions, which is the pumping organ.

In insects like grasshopper, the circulation process starts when the heart vessels pump the blood in a small space of the body cavity. Hemolymph, which is most body fluid, pumped forward from hind end and the sides of the body along dorsal vessel. Next, the movement of the coordinated muscles will return the blood from the body cavity into the dorsal spaces, which is called dorsal sinus. According to Jamal (n.d.), the blood then enters the hearts vessels through ostia (Refer to Figure 1 in Appendix). After that, the fluid is discharged in front of
…show more content…
(1999). Grasshopper Anatomy. Comparative Anatomy: Anatomy System. 22:34.
Brian, V. (2014). In Encyclopedia Britannica online. Retrieved May 5, from,
Chapman, R. F. (1998). The Insects Structure and Function (4th ed.). Cambridge university Press, Cambridge, UK.
Chapman, R. F., Simpson, S. J. & Douglas, A. E. (2013). The Insects: Structure and function (5th ed.). Cambridge University Press, Cambridge, UK.
Jamal, J. (n.d.). Bio-net: Invertebrate Circulatory System. Retrieved May 6, from,
John R. M. (2005). Insect Physiology Circulatory System. NC State University, General Entomology ENT 425. Web. 19 May 2014.
John W. B. (2000). Respiratory physiology-- the essentials. Baltimore: Respiration. 1–10.
Lighton, J. R. B. (1996). Discontinuous gas exchange in insects. Revision Entomology 41: 309–324.
Ryan S., Josh A., & Nick S. S. (2002). Respiratory System Evolution. Diversity of Systems.

Related Documents