The peripheral Nervous System of Scoliodon includes the nerve that arises from the brain (cranial nerve) and the nerve that arises from the spinal cord (spinal nerve). In Scoliodon the brain gives 10 pairs of cranial nerves, the function of all cranial nerves is almost similar to that of the cranial nerve of the higher … Read more
The brain and spinal cord form the central nervous system of Scoliodon, the nervous system of different parts of the brain, and the spinal cord together form the complete Central nervous system of Scoliodon. The brain of Scoliodon: The brain is differentiated into three parts- forebrain, midbrain, and hindbrain, the brain is protected inside the … Read more
In the venous system in Scoliodon deoxygenated blood from different parts of the body is collected through the venous system to the heart, the vein wall is thicker than the wall of the artery. In vein, the blood pressure is not high as in the case of the artery, in the lumen of vein valves … Read more
The arterial system in Scoliodon has a network of thick-walled muscular arteries, the conus arteriosus of the heart pump the venous blood into the arterial system. The conus arteriosus open into the ventral Aorta, the arterial system start from the ventral aorta. We will discuss all components of the arterial system in Scoliodon with the … Read more
In the circulatory system of the Scoliodon heart is the main compartment, the heart in Scoliodon is surrounded by pericardium and the heart in Scoliodon is the branchial heart or venous heart. Heart and Pericardium in Scoliodon: The respiratory organ in Scoliodon is the five pairs of gills, the gills are highly vascularized and the … Read more
Scoliodon lives in aquatic condition so like other fishes they also respire through the gill, the highly vascularized gill take oxygen from the dissolved oxygen in the water and release the metabolic carbon dioxide into the water. Primary Respiratory Organ in Scoliodon: The primary respiratory organ in Scoliodon is five pairs of gill, the gill … Read more
Digestive Glands in Scoliodon: Digestive glands associated with the alimentary canal of Scoliodon are the liver, pancreas, rectal glands, spleen and all of them have a major function in the complete process of digestion but the function of the rectal gland or caecal gland is not completely known to us. Liver: The digestive system of … Read more
The Alimentary Canal of Scoliodon starts at their ventral slit-like transverse mouth opening which leads into the dorso-ventrally flattened buccal cavity. The buccal cavity opens into the large cavity of the pharynx, the pharynx opens into a short narrow esophageal on the posterior end. The esophagus opens into the U-shaped stomach, the esophagus continues in … Read more
Coelom and Viscera in Scoliodon: In Scoliodon the body cavity is not united, the body cavity show compartment, the body cavity has two separate compartments. Two compartments of the body cavity are unequal, the anterior body cavity is smaller and known as the pericardial cavity. The posterior body cavity is larger than the pericardial body … Read more
Myotomes: The locomotion of Scoliodon is controlled by the lateral body muscle majorly. Most of the body muscles are arranged laterally and show segmentation. Muscular segments of their lateral side are present just below the skin, the muscle segments are arranged in a zigzag fashion, each segment of the lateral body muscle is known as … Read more