Question

fill in the blank question
troponin and tropomyosin are part of the filaments within muscle myofibrils.
need help? review these concept resources.
rate your confidence to submit your answer.
high
medium
low
reading
© 2025 mcgraw hill. all rights reserved. privacy center terms of use

Explanation:

Troponin and tropomyosin are regulatory proteins located on the thin filaments of muscle myofibrils. In muscle contraction and relaxation, they play a key - role in regulating the interaction between actin and myosin.

Answer:

thin