CRAYHOPPER LAB

Objectives

  • to observe the external and internal anatomy of a crayfish and a grasshopper

INTERESTING FACT!

Big image

LETS EXPLORE HOPPER'S RESPIRITORY SYSTEM!

The exchange of gases in a grasshopper happen through the tracheal system but begins at the spiracles where air is taken in first. This system contains of ten spiracles located in the abdominal area and the others are thoracic. Oxygen diffuses into cells directly into the atmosphere and that completes the grasshoppers process of respiration. The air sacs that the tracheal system works to create can be compared to human alveoli because it stores carbon dioxide and oxygen when the respiration is taking place. However, we take air in from our mouths and nose while their spiracles do that with the control of their brains. A few of the spiracles are involved in the expiration of air as well. The human tracheae performs the role of cleaning air while the grasshoppers tracheal system works as an independent function not involving the circulatory system.
Big image

LETS EXPLORE CRAY'S RESPIRITORY SYSTEM!

Crayfish breathe using gills, which are located between the carapace (the exoskeleton of the cephalothorax) and the lateral body wall, in the branchial chamber.Oxygen and carbon dioxide are exchanged between the blood and water across the gill surface as water is circulated through the branchial chamber by the beating of the gill bailer on the second maxilla.
Big image

INTERESTING FACT!

In Japan, grasshoppers are seen as a sign of good luck!

Crayfish Taxonomy


Scientific Name (Crayfish): Astacoidea


Kingdom: Animalia

Phylum: Arthropoda

Subphylum: Crustacea

Class: Malacostraca

Order: Decapoda

Suborder: Pleocyemata

Infraorder: Astacidea

Superfamily: Astacoidea


Scientific Name (Grasshopper): Caelifera


Kingdom:Animalia

Phylum:Arthropoda

Subphylum:Hexapoda

Class:Insecta

Order:Orthoptera

Suborder:Caelifera

Big image

INTERESTING BODY!

The northern grasshopper can leap 20 times the length of his body!
Crayfish Anatomy Part 1
Grasshopper Anatomy Part 1