Match the following terms with the correct definition.

Answer:
the contractile unit of a muscle cell - sarcomere
contains calcium that is released during a contraction- Sarcoplasmic reticulum
composed of a contractile protein,actin, and two regulatory proteins, troponin and tropomyosin - thin myofilament
Is composed of the contractile protein myosin- thick myofilament
the muscle cell membrane- Sarcolemma
Answer: its fats,protiens,coplex carbo,carbohydrates,
Explanation: