Topics: Muscle Anatomy Quiz
Why are calcium ions necessary for skeletal muscle contraction?
A. Calcium ions cause ATP binding to actin.
B. Calcium ions release the inhibition on Z discs.
C. Calcium ions trigger the binding of myosin heads to actin filaments.
D. Calcium ions increase the speed of the action potential transmitted along the sarcolemma.
Select your answer:
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DNA Structure, Replication, Proteins › ViewWhich nitrogen bases pair together in DNA?
A. Adenine – Cytosine
B. Thymine – Guanine
C. Adenine – Thymine
D. Cytosine – Ribose
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Which gland is helpful in increasing blood calcium levels?
A. Thymus gland
B. Thyroid gland
C. Pineal gland
D. Parathyroid gland