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Lab Exercise # 11

Lab Exercise # 11. Zoo- 145. Anatomy of Rat. The Circulatory System in the rat, Rattus norvegicus The Arterial System. Lab Exercise # 11. Zoo- 145. The classification of the Rat ( Rattus norvegicus ) Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Order: Rodentia

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Lab Exercise # 11

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  1. Lab Exercise # 11 Zoo- 145 Anatomy of Rat The Circulatory System in the rat, Rattus norvegicus The Arterial System

  2. Lab Exercise # 11 Zoo- 145 The classification of the Rat (Rattus norvegicus) Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Order: Rodentia Family: Muridae Genus: Rattus Species: norvegicus

  3. Lab Exercise # 11 Zoo- 145 The Arterial System • The blood vessels responsible for taking the blood from the heart to different organ of the body are called as Arteries. • The arteries are generally thick walled tubes and carries almost pure or oxygenated blood except the pulmonary artery that takes impure or deoxygenated blood to the lungs. • Arteries are located much deeper in the muscles and appear whitish red due to the colour of the arterial muscles or reddish due to pure blood in the arteries. • The largest artery that carries the blood from the heart is Systemic Aorta. After emerging from the ventricle of the heart it makes a curve to the left side and then descends downward to form Dorsal Aorta. • Then different branches go out to different organs and the distribution is accomplished.

  4. Lab Exercise # 11 Zoo- 145 The various branches emerging from the Aortas, Systemic and Dorsal are as follows: Systemic Aorta: Innominate Artery: It is very small in length or absent Common Carotid Artery: Subclavian Artery: Supply blood to the brain and all sides of the face. Anterior Facial Artery: Supply blood to the brain Posterior Facial Artery: Supply blood to the face Vertebral Artery: Supply blood to the Vertebral Column Brachial Artery : Supply blood to the fore-arm. Internal Mammary Artery: Supply blood to the muscles in the chest

  5. Lab Exercise # 11 Zoo- 145 • Dorsal Aorta: • Intercostals Arteries: • (Blood supply to the intercostal region) • Coeliac Artery: (Blood supply to Liver & Spleen,) • Hepatic Artery • Lienogastric Artery • Renal Artery: (Blood supply to the Kidneys) • Spermatic Artery or Ovarian Artery: (Blood supply to the testes/Ovaries) • Iliolumber Artery: (Blood supply to the muscles in the back) • a. Iliac Artery: b. External Iliac Artery: • Internal Iliac Artery: • Femoral Artery: (Blood supply to the leg) • Vesicle Artery: (Blood supply to the urinary bladder) • Pulmonary Artery or Aorta or Arch: • (Blood carried to lungs for oxygenation)

  6. Lab Exercise # 11 Zoo- 145

  7. Oesophagus Liver Stomach Duodenum Spleen Pancreas Appendix Caecum Ileum Colon Rectum Anus Digestive system of Rat

  8. Vagina

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