Within a myofibril, the distance from one Z line to the next is called a(n) Blank______.Multiple choice question.I bandH bandsarcomereA band

The boundaries of the sarcomere are defined by the Blank______.Multiple choice question.A bandsM linesH zonesZ discs

What is the name of the contractile unit of a myofibril? Each one is separated from adjacent ones by Z lines.

Name the structure found in the middle of the H zone that attaches to the center of the myosin myofilaments.Multiple choice question.TropomyosinG bandZ lineM lineI band

Each myofibril has alternating light and dark bands. The light bands are Group of answer choicesI bandsA bandsH zonesZ lines

The band of tough connective tissue at the midline of the abdomen is the Blank______.Multiple choice question.rectus abdominuslinea albalinea aspera