Lab 4: rat anatomy
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22 terms
English | Photos |
|---|---|
 cranial | towards the head |
| caudal | towards the tail |
| rostral | toward the nose, typically used when talking about the head |
| dorsal | refers to the back of the body of an animal ( the upper surface in rats) |
| ventral | to the belly (the undersurface in rats) |
| lateral | refers to the side of the body (either left or right) |
| medial | means nearer to the midline |
| longitudinal axis | describes the direction from the caudal to cranial end of the animal |
| sagittal section | a longitudinal, vertical section along the midline from the cranial to the caudal end is a ___ ____ |
| sagittal plane | such a section lies in the __ ___ |
| parasagittal | sections or planes parallel with, but lateral to the sagittal plane, are often referred to as _____ |
| frontal section | also lies on the longitudinal axis, but horizontally at 90° from the sagittal plane; also passing from the cranial to caudal end, but dividing the dorsal from the ventral |
| transverse plane | 90° from the two longitudinal planes and the midline. |
| transverse (cross section) | a section cut through the body at right angles to the longitudinal axis |
| Picture |  |
| abdominal cavity | peritoneal cavity |
| diaphragm | separates the abdominal cavity from the thoracic cavity |
| parietal peritoneum | the thin transparent membrane contains flexible loose fibrous connective tissue and lines the abdominal walls. |
| visceral peritoneum (mesentery) | a similar membrane overlying the abdominal organs (viscera). these serous membranes produce fluid which lubricates the organs, reducing frictional stress on constantly moving viscera |
| mesenteric veins | incoming blood to liver comes from ___ ____ from the small intestines and enters the hepatic portal veins |
| sinusoids | the hepatic portal vein branches repeatedly as it enters the liver forming ______, a sort of specialized capillary bed. these veins join the vena cava as it passes through the liver. |
| bile duct in rats | bile ducts from the liver join to form a single tube, the ductus choledochus. |
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