#Biology junction frog dissection skin#

#Biology junction frog dissection skin#

With the removal of the skin on the ventral surface of the neck, the anterior part of the alimentary canal is partially exposed. Paired, compact, yellow bodies, ventrolateral to the kidneys in female. Paired, round bodies, a little anterior to the kidneys.Ī pear-shaped, muscular sac with a narrow neck. The ureter is a narrow tube emerging from the hilus on the inner side. The right kidney is slightly anterior to the left. The first part is colon and the rest rectum.Ī dark red body lying in the greater curvature of the stomach. The structures in the neck region have already been exposed with the removal of the skin.Ī large cavity in the thoracic and abdominal region bounded by the ventral abdominal wall, lateral body walls and dorsal body wall.Ī fairly long tube. The ventral wall of the thorax and abdomen with the sternum is separated and the organs in the thoracic and abdominal cavities are exposed (Fig. Lift the sternum and cut the attachment of the diaphragm to the abdominal wall. Proceed laterally and anteriorly on both sides cutting the ribs up to the anterior border of the thoracic cavity. Give a transverse incision on the abdominal wall in the posterior region.

Separate the skin from the underlying muscles and pin it down. Give transverse incisions along the length of the limbs.

Starting from the cut give an incision extending up to the snout anteriorly and the genital opening posteriorly. Lift the skin of the abdomen with a pair of forceps and make a small cut at about the middle of the abdomen.

Fix it with pins passing through the limbs. Put the specimen on its back on a dissecting tray.