Question

The leading model for explaining muscle contraction is called the ______. The general term for the decrease in muscle size is ______. The combination of myosin heads binding with the active sites of actin molecules forms a ______. The adductor muscles of the legs originate on the pubis and ischium and inserts on the ______. A series of successively stronger (graded) contractions that occur in rested muscle fibers is known as ______. The muscle responsible for ear "popping" during strong changes in elevation is the ______. A dark line consisting of delicate proteins filaments which attach to the center of myosin myofilaments are known as ______. The connective tissue covering on the outside of a muscle is called the ______. The amount of O2 needed by cells to replenish ATP supplies following exercise is referred to as ______. A dark pigmented protein found in skeletal muscle which functions as a store for O2 needed for aerobic respiration is known as ______. The decrease capacity of a muscle to do work and reduced efficiency of performance that follows a period of activity is known as ______. Ca+2 ions are removed form the sarcoplasm of skeletal muscle cells following contraction through the process of ______. When two or more muscles work together to accomplish a common movement, they are called ______. An example of a suprahyoid muscle is ______; an example of an infrahyoid muscle is ______. The end of the muscle which is attached to the more moveable of the two bones that it connects is called the ______. The location where nervous and muscular systems meet is known as the ______.All rotator cuff muscles originate on the ______ and insert on the _____. (NOTE: be specific with the insertion)

Answer 1

The leading model for explaining muscle contraction is called the Sliding Filament Model of Contraction. The general term for the decrease in muscle size is Atrophy,. The combination of myosin heads binding with the active sites of actin molecules forms a cross-bridge. The adductor muscles of the legs originate on the pubis and ischium and inserts on the medial posterior surface of the femur. A series of successively stronger (graded) contractions that occur in rested muscle fibers is known as tetanic contraction. The muscle responsible for ear "popping" during strong changes in elevation is the Tensor tympani muscle. A dark line consisting of delicate proteins filaments which attach to the center of myosin myofilaments are known as Z line . The connective tissue covering on the outside of a muscle is called the epimysium. The amount of O2 needed by cells to replenish ATP supplies following exercise is referred to as oxygen debt. A dark pigmented protein found in skeletal muscle which functions as a store for O2 needed for aerobic respiration is known as myoglobin. The decrease capacity of a muscle to do work and reduced efficiency of performance that follows a period of activity is known as Muscle fatigue. Ca+2 ions are removed form the sarcoplasm of skeletal muscle cells following contraction through the process of relaxation. When two or more muscles work together to accomplish a common movement, they are called synergist muscles. An example of a suprahyoid muscle is digastric muscle an example of an infrahyoid muscle is sternohyoid. The end of the muscle which is attached to the more moveable of the two bones that it connects is called the muscle's insertion. The location where nervous and muscular systems meet is known as the neuromuscular junction .All rotator cuff muscles originate on the Scapula  and insert on the greater tubercle of humerus.