Anal canal : It is the last 2cm of the digestive tract. The various minerals water and vitamins, etc. It produces red blood corpuscles in the foetus of mammals. It prevents the backward movement of food from duodenum to pyloric stomach. Closed lips provide a relatively tight chamber, keeping food and drink locked firmly inside. This part of the alimentary canal is very short due to the absence of neck but highly distensible as its inner lining is thrown into a large number of longitudinal folds which allow the sufficient expansion of the oesophagus during the passage of the ingested food through it to the stomach.
As a result, all the proteins are reduced to amino acids, the carbohydrates to glucose and similar sugars and fats to glycerol and fatty acids. Similarly a circular pyloric sphincter is present at the opening of pyloric stomach into duodenum called pylorus. Carbon dioxide of the blood diffuses out in the opposite direction. They are called conchae or turbinates. It separates mucosa from submucosa.
Sound is produced by the expulsion of air from the lungs which set the free edges of the vocal cords in vibration. By 2019 Fig 1 — Sagittal section of the nasal cavity. Oxygen is taken into the body and carbon dioxide is given off. It also produces heparin which prevents clotting of blood in blood vessels. Visceral Peritoneum or Serosa: It is the outermost thin layer which lacks in the oesophagus. Digestive Glands : Two large digestive glands, in addition to the glands located in the stomach and small intestine, are also found in the frog.
It acts as a valve that can lower to close the oropharyngeal isthmus, and elevate to separate the nasopharynx from the oropharynx. Besides these three types of glands, intestinal glands are found in the mucosa of small villi secreting intestinal juice, and gastric glands are found in the mucosa of stomach which secrete mucus, pepsinogen, renin and hydrochloric acid Food and Feeding : Food: The rabbit feeds on green vegetables, leaves of plants, roots, grasses, etc. It has also been reported that if the rabbits are not allowed to feed on night excreta, they die soon. The fatty acids and glycerol pass in the intestinal lacteals which are lymph capillaries in the intestinal villi. The anterior region of the small intestine which curves upwards to form a U with the stomach is the duodenum, the rest part of it continues as the coiled ileum. It is a bony plate that separates the nasal cavity from the oral cavity. The teeth are homodont, i.
In the body cavity examine the membranous and. This tissue prevents the movement of the small intestine in the abdominal cavity. So they are also known as grinders. The crown is the free end of tooth and is formed of dentine traversed by numerous fine branching canals or canaliculi leading from the interior of the tooth. These glands are embedded in the connective tissue of lamina propria. The liver and gallbladder secrete enzymes for the complete assimilation of food.
The acinus is formed of cuboidal epithelial cells around a narrow lumen. Endocrine Part: Amongst the acini in the connective tissue are present compact groups of cells which are known as pancreatic islets or islets of Langerhans. During this period the skin only serves as an organ of respiration for gaseous exchange. Circular muscle layer is thicker than the longitudinal muscle layer. The digested food is assimilated in the blood and transported to the entire body. Neck lies below the crown in the gum.
This drawing in of air into the lungs is called inspiration. The stomach, which is divided into the anterior cardiac and more posterior pyloric portion, lies in the left side of the abdominal cavity just below the liver. In an embryo the liver forms red blood corpuscles, but in an adult it destroys old and worn out erythrocytes by its Kupffer cells. The rectum is that portion of the large intestine which continues through the pelvic muscles. These nutrients are absorbed into the bloodstream, and utilized by the cells and tissues of the body for carrying out the vital body processes.
It is in the form of wide and curved tube and lies between the oesophagus and intestine. Before sharing your knowledge on this site, please read the following pages: 1. As soon as you finished chewing part of your food and having swallowed it , you moved the food located in the buccal cavity to your teeth and tongue in order to chew and swallow it as well. The pulp cavity is lined by a layer of odontoblast or bone cells. Cricoid cartilage is a slender ring surrounding the larynx.
Intestine: The stomach leads into the long, tubular and coiled intestine. The carbon dioxide is carried by the lymph and diffuses out into the blood. It produces heparin which checks the coagulation of blood in the blood vessels. It is to be noted that the source of the oxygen is the air and the carbon dioxide is formed in the tissues. Locate the between the abdominal and. Each half of the upper jaw of rabbit has two long, sharp and chisel-shaped incisors borne by premaxillae, while each half of the lower jaw has a single incisor at the tip of dentary.