Gold University of Minnesota M. Skip to main content.University of Minnesota. Home page.
Self Tests
How many of the following are true when a muscle cell is RELAXED?

Your Answer

Correct Answer

1. The troponin and tropomyosin system is bound to actin molecules.  True
False
2. The troponin and tropomyosin system has calcium ions attached to it.  True
False
3. Acetyl Choline (ACh) molecules are located in the receptors on the motor end plate.  True
False
4. The myosin cross bridges come in contact with the actin molecules.  True
False
5. Calcium is in high concentration in the SR - and low concentration inside the muscle cell.  True
False
6. The troponin and tropomyosin system is bound to the motor end plate.  True
False
7. Acetyl Choline ester-ase (AChE) is secreted by the motor neuron.  True
False
8. Protein molecules inside a sarcomere , such as actin and myosin, are longer when a muscle cell is relaxed, as compared to when it is contracted.  True
False
9. The motor neuron does NOT secrete any NTS in order to activate relaxation.  True
False
10. There are NTSs in the receptors on the motor end plate.  True
False

 
The University of Minnesota is an equal opportunity educator and employer.