The myofibrils in muscle fibers are made up of repeating sections called that are the basic contractile units of skeletal muscle.

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."