BIOD43H3 Lecture 20: Lecture 20
Document Summary
Temperature, q10, and muscle: english sparrow only shows in one temperature. As you increase temperature in zebra finch and hummingbird, maximum isometric contraction increases: can probably fit exponential curve, linear curve fits just as well. Look at normalized work, each case is tested on given muscle fiber bundle, repeated test 7-8 times: maximum work that fiber did at 15 c/35 c etc. set to. 100% work, everything else is normalized to maximum work value they got: note the x-axis, frequency. Max work at 15 c occurs when cycling at 2- If go up 22 c, peak is occurring 2-6hz, max work at faster contraction frequency. If doing more work per unit time, need higher power output. What about during flight: small animal will lose heat to environment at relatively high rate compared to small body size, even at cool temperatures, body provides enough heat, start to sweat to get rid of excess heat.
