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Lab Practial
rat anatomy
17
Biology
Undergraduate 1
10/25/2009

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Term
Diaphragm
Definition
A muscular wall separating the thoratic and abdominal cavities. Plays a role in breathing, permitting inhalation and exhalation. Part of the respiratory system.
Term
Liver
Definition
Big dark brown organ. Four lobes. Functions: bile production...breaks up fat and conversion of excess sugar to store glycogen and convert back to suagr. Detoxification of harmful substances in diet, synthesis of blood plasma protiens.
Term
Stomach
Definition
Large scar below liver on left side. some digestion occurs here.
Term
Spleen
Definition
Part of circulatory system and produces white blood cells and destroys spent rbc's.
Term
Small intestine
Definition
six times the length of rats body. Digestion is completed and absorbtion occurs in the remainder of the small intestine.
Term
Duodenum
Definition
first and shortest segment leaving the stomach (u-shaped tube).
Term
Pancreas
Definition
belongs to the endocrine and digestive systems, producing pacreatic enzymes and unsulin.
Term
Large intestines
Definition
"large" refers to the diameter being larger than the small intestine, it's much shorter. It absorbs water and prepares undigested food for elimination.
Term
Caecum (first region of large intestine)
Definition
Fermentation sac, absorbtion region, and harbors bacteria responsible for cellulose digestion in rodents and herbivores.
Term
Colon (second region of large intestine)
Definition
Major part. Water and mineral absorbtion occur here.
Term
Rectum (third region of large intestine)
Definition
Descending to the anus. Gets rid of waste
Term
Azygous vein
Definition
located on the left side, only anterior vein that is not paired.
Term
Right/Left anterior jugular veins
Definition
large thick veins located laterally and superficially in the thoracic region and emtpy into the precavas.
Term
Renal veins
Definition
connect the vascular supply of the kidneys to the posterior vena cava
Term
Aorta
Definition
Largest artery in the body, goes from left ventricle and continues on the left side of the vertebral column as the descending arota.
Term
Celiac artery
Definition
a large, unpaired vessel branching from the arota just below diaphragm
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