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40 Cards in this Set

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  • Back
1. Identify the activity of rnyosin, actin, tropomyosin, and troponin.
Myosin fibrils-Contraction and shortening of muscle.
Actin-Binding sites(attachment) for Myosin. Attached to z-line. Tropomyosin-covers receptors (On actin) until signaled. Troponin-aids in uncovering binding sites.
2. What are the 2 specialized membranes?
Transverse Tubules (T-Tubules), Sarcoplasmic reticulum (SR)
3. What is the function of each of these membranes?
T-Tubules transport (AP) signal deep into cell.
Sarcoplasmic reticulum- store, release, and reuptake of Ca+
4. Where does the ATPase reaction occur?
Myosin fibrils
5. What differentiates fast and slow contracting muscle?
ATPase action different in Myosin. Difference in voltage action threshold,
6. Understand the steps of muscle contraction (from the axon potential to reuptake of calcium).
(See practice)
7. What allows us to characterize the different isoforms of myosin?
myofibrillar isoforms (myosin); allow us to categorize different myosin isoforms in myosin. Sample and stain allows us to see difference.
8. Understand the characteristics differences between type I and type II muscle.
Type 1- Slow twitch, slow oxidadative, Postural, slow to fatigue, lower Excitation level lower. (red)
Type II - Fast twitch, fatigue more quickly, glycolic or o2 glycolic, excitation level higher. (II-red, IIA-white)
9. Where is succinate dehydrogenase (relative to metabolism)?
Krebs cycle
10. What influence does endurance training have on the following?
See following
10a. Succinate dehydrogenase
Range for maximal O2 uptake improves dramatically.
10b. Oxidative capacity
10c. Type I fiber recruitment
More efficient
10d. Mitochondrial density
11. What influence does resistance training have on the following?
See following
11a. Hypertrophy
X-Section hypertrophy
11b. Mitochondrial density
11c. Power generating capability
11d. Intracellular glycogen
11e. Intracellular CP
? Improved
11f. ATP utilization rate
11g. Rate of motor unit activation
11h. Motor unit synchronization
11i. Coordination of antagonistic muscle groups
12. Define the following as they related to factors involved in muscle adaptations to resistance exercise:
See following
12a. Specificity
Stressing the training of muscles involved with a particular activity.
12b. Reversibility
Reverse effects happen when chronic training stops. (Atrophy)
12c. Overload
Must occur to improve strength and stimulate Hypertrophy
12d. lndividuality
Each individual may react differently to training effects.
What 3 participants make up the "thin" filaments?
Actin, Troponin, Tropomyosin.
Identify the 6 participants in the sliding filament theory
Myosin, Actin, Troponin, Tropomyosin, ATP, Calcium
Which has a binding site for Calcium Ions?
Actin (Troponin)
Which is connected to the z-line?
Which encompases the thick filament?
Which has a binding site for ATP?
Which is respinsible for disconnecting the cross bridges?
Which covers the binding sites on Actin?
What is stored in the terminal cisternae?
What happens when ATP is depleted in the muscle?
Rigor (Bridges won't relese)
How does troponin move?
Through the binding of calcium ions