The tadpole (larva) of frog is herbivorous. The cytoplasm contains a respiratory red pigment, known as haemoglobin, which is made up of a blood protein, the globin and haematin. The absorption starts from the stomach. The Princess and the Frog was set in the early 1920s, during New Orleans roaring jazz age (Chowdhury, 2009). The nerves arising from the sympathetic ganglia supply the respective visceral organs, such as heart, liver, stomach, intestine, kidneys, gonads, blood vessels, urinary bladder, etc. Digestion is a process by which the non-diffusible food material is converted into diffusible form by the action of various digestive enzymes. Hence, it is called as an amphibian. The first spinal nerve is also known as hypoglossal Nerve. The wall of the eye ball mainly consists of three layers: Outer fibrous coat, middle vascular coat and inner nervous coat. The prey is held, injured or killed by the maxillary and vomerine teeth. In addition there are also present many mucus secreting cells. The lungs are two delicate, elastic, pinkish, ovoid, thin walled hollow sacs lying on either side of the oesophagus. They secrete parathormone (PTH) which regulates the calcium phosphorous balance in the blood. The digital formula for the fore limb of frog is 02233. During the rainy season, which is also the breeding season of the frog, the frogs make peculiar sounds with the help of their vocal cords, known as croaking. A fore limb consists of humerus, radio-ulna, carpals, metacarpals and four digits. These are connected with the central nervous system after travelling in some cranial and spinal nerves. When Frogs mate, the male frog tends to clasp the female underneath in an embrace called amplexus. (ii) Petrohyal muscles are attached at one end to the hyoid apparatus and at the other end to the auditory capsule (prootic bone). Because these capillaries contain fat, they appear milky white, hence are termed as lacteals (lactos = milk). Disclaimer Copyright, Share Your Knowledge
The Cricket frog (4cm or 1.5 inches long) can leap 40 times its length in one jump! Adrenaline is the hormone of the medulla which increases heartbeat, blood pressure, blood sugar, respiratory rate, etc. It stores blood hence it is called “blood bank”. Sense Organs 12. This is because the toad lifestyle, with its dry, rough, skin, is an adaptation to living in drier habitats. Thus, the cavum pulmocutaneum leads into the dorsal chamber of synangium and then dorsal chamber opens into pulmocutaneous arch. The latter stores the sperms temporarily. The tenth nerve is also known as coccygeal nerve, which is not commonly found in Rana. They have a tail and gills similar to that of a fish which helps them to swim and breathe in the water. They run backwards from the kidneys and open into the cloaca, and carry urine from the kidneys to cloacal chamber. The circulatory system of frog consists of blood vascular system and lymphatic system. the height, weight, etc.) It was ideal animal for dissections. The tongue along with the prey is withdrawn with great rapidity into the buccopharyngeal cavity and the mouth is firmly closed. Generally frogs are found in ponds, tanks, pools, ditches, etc. The dorsal side of the medulla oblongata is non-nervous but highly vascular and forms posterior choroid plexus. The thymus in the adult frog is a small compact lymphoid body located behind each tympanum under the depressor mandibulae muscle. There are present two pairs of thin walled, muscular lymph hearts, one pair is located behind the transverse processes of third vertebra and the other is situated in the region of urostyle. Many peptidases (tri and dipeptidases), change peptides into amino acids. They are small, numerous and spindle shaped nucleated cells. The cystic duct proceeds towards the duodenum as the bile duct. The female frog lays the eggs in the water body and then these eggs are fertilized by the male frogs. It supplies the receptors of the skin, upper jaw, upper lip, lower eye-lid and carries the impulses from these areas to brain and hence is sensory in nature. In addition, Engel claims that “the film running for 57 to 97 minutes showing that Tiana a green frog and she was also waitress who does not gain a princess status until the very end of the movie”. The vocal sacs act as resonators. The gastric juice contains hydrochloric acid and a pro-enzyme pepsinogen and mucus. Example: It increases heart beat. It secretes thymosin hormone. The male frogs croak louder than the females, because in them the pitch of croaking is increased due to the presence of two vocal sacs situated one on each side of the floor of the throat. The superior oblique is supplied by fourth cranial nerve, inferior oblique, internal rectus, superior rectus and inferior rectus are innervated by 3rd cranial nerve while external rectus gets sixth cranial nerve. They help in croaking. It carries nerve impulses of sight from the eye to the brain, and its nature is sensory. On the surface of stratum corneum, are present the openings of the cutaneous glands.