Rat Dissection Flashcards

Rat Dissection

This is a comprehensive guide to rat dissection, intended for study and review.

General Information

• The following slides are intended to help you with the dissection of the rat and then to review for the lab practical that will follow.

Classification

• Scientific Name: Rattus norvegicus

• Common Name: Rat

• Kingdom: Animalia

• Phylum: Chordata

• Subphylum: Vertebrata

• Class: Mammalia

• Order: Rodentia

Body Cavities

1. Diaphragm:

   • Divides the ventral cavity.

2. Thoracic Cavity:

   • Contains the heart and lungs.

3. Abdominal Cavity:

   • Contains digestive, excretory, and reproductive organs.

Heart and Blood Vessels

• Key Structures:

  • Trachea

  • Right Superior Vena Cava

  • Left Superior Vena Cava

  • Aorta

  • Atrium

  • Heart (Ventricles)

Respiratory Organs

• Key Structures:

  • Trachea

  • R. Lung (Right Lung)

  • L. Lung (Left Lung)

• Trachea contains cartilage rings to provide support.

Thoracic Organs

• Key Structures:

  1. Trachea

  2. Heart (Ventricles)

  3. Right Lung

  4. Diaphragm

Abdominal Cavity

• Contains various digestive organs.

Digestive Organs

• Key Structures:

  • Caecum

  • Small Intestine

  • Liver

  • Duodenum

  • Stomach

  • Large Intestine

  • Spleen

  • Pancreas

  • Jejunum

  • Ileum

  • Colon

• Specific arrangement in the rat ventral view:

  • Diaphragm

  • Small Intestine

  • Liver

  • Spleen

  • Caecum

• Numbered Digestive Organs:

  1. Liver

  2. Stomach

  3. Pancreas

  4. Duodenum (part of small intestine)

  5. Small intestines (jejunum, ileum)

  6. Caecum

  7. Urinary Bladder

• Rat Abdominal Cavity

  • Duodenum

  • Pancreas

  • Jejunum

  • Caecum

  • Liver

  • Stomach

  • Spleen

  • Ileum

  • Colon

• Lower abdominal digestive organs:

  • duodenum

  • liver

  • esophagus

  • colon

  • stomach

  • cecum

  • spleen

  • kidney

  • rectum

Excretory Organs

• Key Structures:

  • Kidneys

  • Ureter

Other Organs

• Includes:

  • Liver

  • Testes

  • Epididymis

  • Spleen

  • Vas Deferens

  • Lung

  • Ureter

  • Heart-Ventricles

  • Kidney

  • Renal Veins and Arteries

  • Prostate Gland

  • Cecum

  • Large Intestine

  • Bladder

  • Seminal Vesicles

  • Pancreas

  • Trachea

  • Coronary Arteries

Male Reproductive Organs

• Key Structures:

  • Seminal Vesicles

  • Cecum

  • Vas Deferens

  • Testes

  • Epididymis

  • Urinary Bladder

  • Prostate Gland

  • Small Intestine

  • Liver

  • Coronary Arteries

  • Kidney

  • Penis

Female Reproductive Organs

• Key Structures:

  • Large Intestine

  • Small Intestine

  • Liver

  • Cecum

  • Urinary Bladder

  • Uterine Horn

  • Ovary

  • Spleen

  • Stomach

Urogenital Organs

• Key Structures:

  1. Stomach

  2. Kidney

  3. Ovary

  4. Oviduct

  5. Uterus (left horn)

  6. Large Intestine

  7. Urinary bladder

• Female Uterus with developing embryos.

Review and Quiz Yourself

• Thoracic Cavity

• Abdominal Cavity