From 4b30fdcb6d4090eb1d4af0db1467c1e3b9ec5abb Mon Sep 17 00:00:00 2001 From: Lukas Werner Date: Tue, 3 May 2022 11:03:50 -0700 Subject: [PATCH] finish muscle fatigue --- anatomy/Muscle_Fatigue_review.md | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 anatomy/Muscle_Fatigue_review.md diff --git a/anatomy/Muscle_Fatigue_review.md b/anatomy/Muscle_Fatigue_review.md new file mode 100644 index 0000000..93366e2 --- /dev/null +++ b/anatomy/Muscle_Fatigue_review.md @@ -0,0 +1,23 @@ +# Review + Muscle Fatigue + Respiration Questions -> Answer to prep for introduction for the lab + +1. What are motor units? Why do only recruit some motor units instead of using all our muscle fibers? + * A motor unit is a group of muscle fibers that are attached to a neuron. + * this allows for cycling of motor fibers so that they do not get worn out as much +2. What is the difference between aerobic and anaerobic respiration? (both inputs and outputs) + * both : have glucose + * aerobic : has air for input; makes a ton of atp + * anerobic : does not have air for input; has atp and lactic acid +3. Describe the lactic acid cycle and the cori cycle. Why do we have/need each of these? + * the cori cycle is the same as the lactic acid cycle. The process takes lactate and converts it back into glucose but uses a bunch of atp in the liver in order to make a little atp in the muscle. The two work together because they have similar inputs oand outputs that work in a loop +4. Describe muscle fatigue, why it occurs, and what happens to humans when fatigued. + * muslce fatigue is the process in which a muscle is no longer able to fullfull its duties and then stops preforming said action. In humans this often is due to a lack of oxygen which will prevent the muscle from preforming cellular respiration +5. Compare and contrast type I, type IIa, and type IIx muscle fibers. + +| | type I | type IIa | type IIx | +|--------------------- | ------ | -------- | -------- | +| structural metabolic | small muscle diameter. lots of oxygen. | largest diameter, highly valscular + high density of mitochondirea -> aerobic | intermediate diameter,l white/paleish pink, little valcularity, almost no aerobic respiration | +| metabolic | longer to ccontract, myoglobin (oxygen) | glycolysis cast contraction -> moderate fatigue resistance | castest contractility, uses atp very quickly, fast but super low fatigue resistance | +| function | low power (first to be used) posture etc | moderate power 2nd used, walking/sprinting (longer distances) | 3rd used, highest power strong but short fatigue resistace + +6. Describe the effect of different types of exercies on muscle tone and function + * as an exercise increases in utilization the types of muscles that are recuited for that activity will further develop because they are more needed