Muscle
Which types of muscle are under involuntary control?
Cardiac and Smooth
List the 3 macronutrients
Carbs, Fats, Protein
Which system stimulates the fight or flight response?
Sympathetic Nervous System
Select a champion and have them rock/paper/scissors other groups champion until there is one winner.
+ 1 to ultimate winner
Which molecule does Calcium bind to when stimulating muscle contraction?
What enzyme helps breakdown phosphocreatine?
Creatine Kinase
What is another name for an afferent nerve?
Sensory nerve
What part of a neuron receives information from other neurons?
Dendrites
At what velocity do we create the most force during a concentric contraction?
Slow velocity (nearing isometric)
How many kcal's is 1 gram of fat?
9.4 kcal/gram
What is the rate limiting enzyme of glycolysis?
Phosphofructokinase (PFK)
List 2 cellular locations where mitochondrial density is high?
near myosin head and Na+/K+ Pumps
List the 6 steps of muscle contraction.
1.An action potential “signal” is sent from the brain
2.Arrives at axon terminal and releases acetylcholine (ACh)
3.ACh crosses neuromuscular junction and binds to ACh receptors on plasmalemma.
4.Action potential travels down plasmalemma and T-tubules.
5.Triggers Ca2+ release from sarcoplasmic reticulum (SR).
6.Ca2+ binds to troponin and enables contraction
Which energy system is used most by a marathon runner AND list all substrates that could be used.
Oxidative. Fat (FFA), Carbs (glucose, glycogen), very minor Amino Acid
Draw an action potential and explain all the major steps.
Resting (-70 mV) --- Na++ gates open and rushes into the cell (Depolarization to +30 mV) ----- K+ and rush out of the cell (Repolarization) --- Hyperpolarized state (-90 mV) followed by resting (-70 mV)
Draw AND Explain the Length/Tension relationship
I'll draw it