BIOL3030 Lecture 11: BIOL 3030 Lecture 11: Lecture 11: 2/10/2017: Feeding, food, and fuel I: metabolism and digestive anatomy
13 Feb 2017
School
Department
Course
Professor
Document Summary
Speed of contraction, endurance of contraction, power of contraction. Serca: actively pumps calcium back into sr. Cross bridges need to diarticulate: myosin release from actin, shortening to happen. Binding sites must be obscured, so must take away calcium from cytosol. Ca is taken away, tropomyosin is free to bind. Rate : transient time: faster drawing back calcium into sarcoplasmic reticulum, and pumped back out. Squigly to increase sa to increase pumps. Invest in sr: reduce force and endurance. Muscles vibrate/contract quickly and make pitch against gas bladder to communicate. In strigulatory: vibrate/massage: has a lot of superfast twitch swimbladder fibers. Fuel tank: mitochondria, size of engine: myofibrilar horsepower, accelerator sr. Small fuel tank (mitochondria), lot of horse power (myofibrilar) , medium. Digestive tract anatomy and function sr (accelerator): car has great acceleration. Gut: feeding, mechanical breakdown, storage, chemical breakdown: hydrolysis, absorption of monomers (elimination) Conserved vertebrate digestive anatomy: stomach, esophagus, intestine, anus. Headgut: food capture, reception, mechinaical breakdown, some storage.
