The sarcoplasmic reticulum stores ____ when a muscle is relaxed and releases it for binding to ____ during contraction
a. calcium, troponin
b. calcium, tropomyosin
c. sodium, tropomyosin
d. potassium, tropomyosin
e. sodium, troponin
A
You might also like to view...
Large birds can break or amputate fingers with their beaks
Indicate whether the statement is true or false
What five questions are important to ask when inquiring about vaccinations?
What will be an ideal response?
The right and left atria depolarize and contract following the arrival of the action potential from the __________.
Fill in the blank(s) with the appropriate word(s).
The following are structural components of the conducting system of the heart. 1. Purkinje fibers 2. AV bundle 3. AV node 4. SA node 5. bundle branches The sequence in which excitation would move through this system is which of the following?
A) 1, 4, 3, 2, 5 B) 3, 2, 4, 5, 1 C) 3, 5, 4, 2, 1 D) 4, 3, 2, 5, 1 E) 4, 2, 3, 5, 1