ESYS 101 Lecture Notes - Lecture 16: Sea Anemone, Mesoglea, Countercurrent Exchange
Document Summary
You move to the desert in southern arizona and bring your pet dog and snake wit you. Torpor - lower body temp when inactive or asleep. Respiration: 200 breaths per min to 4-5 per min. Heart rate from 350 to 5 beats per minute. Cold tissues use less fuel - energy stores last longer. Why do humans need shoes when walking in the snow and when arctic wolves do. Tensile = biological ropes , resist being stretched. Collagen (protein in knee fibers or cartilage) Rigid = little deformation when stressed; stiff. Skeletal support systems: provide body support, transmit force produced by muscle contraction, allow for muscle antagonism, resist compressive and bending forces exerted by muscles, amplify the force and displacement of muscle contraction. Large animals benefit from endoskeletons bc more resistant to local buckling. Supports greater weight than solid cylinder of the same amount of material. Sets upper limit to diameter (bigger the diameter, more susceptible to local buckling)
