Anatomy+of+a+skeletal+muscle+cell+6

Anatomy of a skeletal muscle cell!


 * Myofibril-** A long filamentous organelle found within muscle cells that has a banded appearance
 * -Thin Myofilaments-** actin protien
 * -Thick Myoilaments-** myosin protien


 * Sarcolema-** outer surface of a muscle cell


 * Sarcomere-** functional unit of a muscle cell


 * Sarcoplasmic Reticulum-** storage site of calcium ions in a muscle cell


 * Z-disc-** zones that seperate sarcomere
 * A-band-** in a sarcomere made up mostly of thick myofilaments
 * I-band-**only composed of thin myofilament


 * H-zone-**area of the A-band that only contains thick myofilaments