#REAL FROG DISSECTION LABELED FREE#

Glottis is a longitudinal slit like aperture.A median elevation on the floor carries the glottis.

So, sometimes these are termed as single bucco-pharyngeal cavity.

Posteriorly, the buccal cavity reaches short pharynx without any clear demarcation.

This causes the orbits to bulge inwards which in response pushes the food towards the pharynx.

In course of swallowing the food, frog depresses the eyes.

These areas are the bulging of eye balls.

The roof of buccal cavity shows two large oval and somewhat pale areas, behind the vomerine teeth.

By these internal nares, the nasal cavities open into buccal cavity.

Just in front of vomerine teeth, the roof of buccal cavity contains anteriorly, a pair of small openings of internal nares.

The change of pressure in large sublingual lymph sac causes the protrusion of tongue.

The slimy surface of tongue facilitates in capturing the prey.

#REAL FROG DISSECTION LABELED FREE#

This free end can be flicked out and retracted immediately after catching the prey.The anterior end of tongue is attached to the inner border of lower jaw.In frogs, tongue is large, muscular, sticky and protrusible.It is filled with a soft nourishing pulp, containing connective tissues, blood vessels, nerve and odontoblast cells that produces new material for the growth of tooth.Tooth contains a central pulp cavity open at the side.Enamel is a very hard, resistant and glistening substance.It is made up of dentine (a hard ivory-like substance), which is traversed by numerous fine canals or canaliculi.But teeth are attached to the jaw bone by a broad base made of a bone-like substance.The nature of teeth is homodont (similar), acrodont (not set in a socket).The function of teeth is to simply hold the prey and prevent it from slipping out.Vomers (two small bones in the roof of the mouth) also consists of two groups of vomerine teeth.However, teeth occur in a row of either side on the premaxillae and maxillae bones of the upper jaw.These mucous glands secrete mucus that helps in lubricating the food.It has ciliated columnar epithelial lining that contains mucous glands.Buccal cavity is large, wide and shallow.it can move up and down to close or open the mouth. Two bony jaws bound the mouth, and the jaws are covered by immovable lips.It extends from one side of the snout to the other. It is the beginning to the alimentary canal.Digestive system consists of digestive tract or alimentary canal along with the associated digestive glands.Digestive system of frog: Anatomy and Physiology of digestion Digestive system of Frog: parts and functions

Real frog dissection labeled