BIOL-3030 Lecture Notes - Lecture 10: Stratum Basale, Urinary Bladder, Stratum Corneum
Document Summary
Air movement won"t stimulate the lateral line system. Sensation of electrical field is not viable on land. Support: density of body tissues is about 1,050 kg/m3, density of water is 998 to 1,024 kg/m3, density of air is 1. 205 kg/m3. **tissue density is closest to that of water density. Because these densities are so similar, the effects of gravity are minimized. In water, the skeleton serves as: area for muscle attachment, means for transmitting forces through body, but not required to maintain body shape. As animals get bigger in length : body mass increases in volume (x3, bone cross sectional areas increase in area (x2) ** as animals get bigger, forces on their bones get bigger at a faster rate than the ability of those animals to resist those forces unless they find a way to accommodate the size increase. Accommodating size increase: relatively more robust skeleton (positive allometry, less risky/vigorous activity.
