Dog shark and Fetal Pig Dissection Preparation.pdf
Dog shark and Fetal Pig Dissection Preparation.pdf
Dog shark and Fetal Pig Dissection Preparation.pdf
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<strong>Dog</strong> <strong>shark</strong> <strong>and</strong> <strong>Fetal</strong> <strong>Pig</strong><br />
<strong>Dissection</strong> <strong>Preparation</strong>
Animal Kingdom:<br />
•Kingdom: Animalia<br />
•Phylum: Chordata (spinal cord)<br />
•Subphylum: Vertebrata (around spinal cord)<br />
•Class: Chondrichthyes (cartilage vertebrae)<br />
•SubClass: Elasmobranchii (<strong>shark</strong>s <strong>and</strong> rays)<br />
•Orders: ◦Squaliformes (dogfish <strong>shark</strong>s)
Body Planes:<br />
1. Coronal plane: ventral/dorsal<br />
2. Sagittal plane: left to right<br />
3. Transverse plane: superior (cranial)/inferior (caudal)
Fish Anatomy:<br />
1. Dorsal fins: along back<br />
2. Ventral fins: named by location=pectoral, pelvic, anal<br />
3. Spiracle: vestigial 1 st gill slit; O 2 to eye/brain in bottom dwellers/eat<br />
4. Claspers: help males deliver sperm to female<br />
5. Cloaca: primitive cavity for intestinal, urinary <strong>and</strong> genital tracts<br />
6. Placoid scales: regularly patterned; same material as teeth<br />
7. Lateral line: sense organ to detect movement/vibration
Digestive System:<br />
1. Liver: stores energy; detoxifies; bile for fat digestion<br />
2. Gall bladder: stores bile<br />
3. Bile duct (from gall bladder): releases to sm. intestine<br />
4. Pancreas: digestive enzymes to sm. intestine (insulin to blood)
Urinary System:<br />
1. Kidney: control blood composition; produce urine<br />
2. Ureter: deliver urine to bladder (stores urine)<br />
3. Urethra: urine to urogenital sinus (external opening)
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