What is the role of the abdominal flexor muscles?
Its main roles are to stabilise the trunk and maintain internal abdominal pressure. rectus abdominis – slung between the ribs and the pubic bone at the front of the pelvis. When contracting, this muscle has the characteristic bumps or bulges that are commonly called ‘the six pack’.
What is the function of the ganglia in a crayfish?
Each abdominal segment in crayfish is innervated bilaterally by three sets of nerves. The anterior pair of nerves in each ganglion controls the swimmeret appendages and sensory supply.
What are the muscles in the abdomen?
abdominal muscle, any of the muscles of the anterolateral walls of the abdominal cavity, composed of three flat muscular sheets, from without inward: external oblique, internal oblique, and transverse abdominis, supplemented in front on each side of the midline by rectus abdominis.
Do crayfish have muscles?
The majority of the internal organs are located in the cephalothorax of the crayfish (the head and chest area). While in the abdomen we can find mostly strong muscles, and the part of the intestine system.
What is the function of the Uropod in crayfish?
Crayfish Appendage Table
|Swimmeret||1st swimmeret in males transfers sperm to female; females use the 2nd-5th swimmerets to hold eggs & young; locomotion||abdominal region on the ventral side|
|uropod||swimming||posterior or tail end|
|telson||swimming||posterior or tail end|
What is the function of the abdomen?
The primary functions of the abdomen consist of digestion, breathing, posture and balance, as well as movement. The major organs located in the abdomen are associated with digestion, for which the functions are described above. The abdomen is also required for breathing via the accessory muscles of respiration.
What is a basic abdominal contraction?
For many people when they are told to contract the abdominals, what they really are doing is sucking in, pulling up their diaphragm and bringing the abdominal contents with it. This is not muscle work. Tranversus Abdominis Muscle. The muscle that should be contracting is called the transversus abdominus.
What organs are in the abdomen of a crayfish?
Quick Notes about Crayfish Internal Anatomy
|Scientific name||Common name|
|Pair maxillary and antennal glands||Green glands|
|Two-chamber stomach cardiac stomach pyloric stomach||Stomach|
What is under the abdomen of a crayfish?
In the abdomen, the first five segments each have a pair of swimmerets, which create water currents and function in reproduction. The sixth segment contains a modified pair of uropods. In the middle of the uropods is a structure called the telson, which bears the anus.