Anatomy and Physiology
Name_____________________
Muscle Mechanics and Metabolism test review
**We have been working our way through chapter 7 and it seems like it is time to move on. This
Friday, we will take a test on the unit. You need to make a review sheet to help you prepare for
the test. Each student will make their own and then you will be able to use it on the test. Below
are the terms/concepts you will need to know and include in your review sheet:
Motor units:
A) Diagram including-muscle fiber, motor neuron axon, motor neuron cell body, spinal cord
B) Number of motor neurons per different body parts (eye vs leg)
C) Recruitment (definition)
Slow twitch fibers vs. fast twitch fibers
A) What are the main differences between the two fiber types?
-red vs. white, produces lactic acid, high requirement for oxygen, diameter of fiber size,
endurance vs. high intensity, contains myoglobin, relies on anaerobic metabolism
Muscle twitches
A) Be able to explain the graph on p 195. Include-latent period, stimulus, contraction phase,
relaxation phase, what is the graph displaying (ex. What is on the y and x axis)?
B) What are the differences between summation, incomplete tetanus, and complete
tetanus?
Muscle Energetics
A)
B)
C)
D)
E)
F)
G)
H)
I)
J)
K)
What is ATP?
What causes a muscle cramp (in regards to ATP)?
What is muscle fatigue?
What is myoglobin?
Oxygen debt
What is creatine phosphate?
What is creatine phosphokinase?
Where does ATP get generated?
How does a resting muscle generate most of it’s ATP?
Aerobic vs anerobic endurance
What is lactic acid? Why is it a cause of muscle fatigue?
Random other things
A) Isotonic vs isometric contraction
B) “All or none” response for contraction
C) Muscle tone