PHGY 215 Final Practice Test Review Questions With Multiple Choices

PHGY 215 Final Practice Test Review Questions With Multiple Choices 1. Describe the relationship between muscle fibers and the overall structure of skeletal muscle. Skeletal muscle consists of bundles of muscle fibers grouped together by the sarcoplasmic reticulum. Skeletal muscle is composed of individual muscle fibers that extend the entire length of the muscle. Skeletal muscle is made up of multiple layers of connective tissue surrounding muscle fibers. Skeletal muscle is formed from a network of T-tubules and sarcoplasmic reticulum. 2. Describe the structural significance of the H zone within the A band of muscle fibers. The H zone is where muscle contraction occurs. The H zone is the lighter region in the middle of the A band where only thick filaments are present. The H zone is the boundary between two A bands. The H zone contains both thick and thin filaments. 3. What is the primary characteristic of the I bands in muscle fibers? Continues....