PPT-Muscles Move You!

Objective To learn the structure and function of the Muscular System Bell Work Put the terms in the correct order from most simple to most complex SKELETAL MUSCLE STRIATED MUSCLE CELL MUSCULAR SYSTEM. Examining interacting muscles . There are commonly three things judges look for:. Symmetry . of the . muscles (how similar they are). Muscularity (how big they are). Level . of . conditioning (how toned they are. More than 600 muscles in our bodies (about 650). Muscles make up approximately half of the human body’s weight. The human heart will beat . about 40 million times a year. , and . a person's heart will beat approximately 2.5 billion times by the time of their 70th birthday.. Muscles of girdles and appendages. Innervated by ventral ramus of spinal nerves. Key Point. What is a girdle?. What is a ramus/rami?. Appendicular Muscles - fish. Originated as extensions of hypaxials of body wall. 1. Muscles of the Thoracic Wall. a. . intercostals (external/internal). * L: between ribs. * A: elevate/depress rib cage (breathing). Origin:. . Inferior border of rib above. . The . sliding . filament theory . of . muscle contraction. Gross . and microscopic structure of skeletal muscle. The . ultrastructure. of a myofibril.. The . roles of . actin. , myosin, calcium ions and ATP in myofibril contraction.. Muscle. Origin. Insertion. Action. *Rectus . Abdominis. Pubis. Ribs, . Xyphoid. Process. Flexes. and rotates lumbar vertebrae. *External . Oblique. Ribs. Pubis, Ilium, Linea Alba. Flexes vertebral column. RECEPTORS AND EFFECTORS. SENSORY RECEPTORS. receptor. stimuli. sense. Photoreceptors. light. Eyes. Mechanoreceptors. Changes. in . movement. , . pressure. , . waves. , . sound. ,. . contact. , . pain. Objectives. Identify tender, intermediate, and tough muscles. List specific muscles in various steaks. What steaks are the most tender?. Tender Muscles. Examples:. Psoas major-. . Loin, on the back. Objectives. Identify tender, intermediate, and tough muscles. List specific muscles in various steaks. What steaks are the most tender?. Tender Muscles. Examples:. Psoas major-. . Loin, on the back. Muscles of Swallowing. Muscles of Swallowing. The anterior portion of the neck is divided into the suprahyoid and infrahyoid muscle groups.. . Muscles of Swallowing. The anterior portion of the neck is divided into the suprahyoid and infrahyoid muscle groups.. . 2.BONES. The framework of the human body is composed of 206 bones and it forms the skeletal system. This system has 5 major functions. The skeleton gives shape and support to your body. Bones protect your internal organs. Major muscles are attached to bone and help them move. Blood cells are formed in the center of the soft tissue called marrow. Finally, major quantities of calcium and phosphorous compound, which make bones hard, are stored in the skeleton.. Muscles of Facial Expression. Muscles of Facial Expression. The muscles that promote facial expression lie just deep to the skin.. . Muscles of Facial Expression. The muscles that promote facial expression lie just deep to the skin.. masticatory. apparatus, including the skeletal components, the teeth and the . temporo-mandibular. joint.. The . masseter. muscle. The . masseter. muscle is a broad . multipemnnate. (bilateral symmetrical) muscle with . Origin:. the immovable end of the muscle; attached to a relatively immovable bone. Insertion:. the end of the muscle attached to a movable bone. **When a muscle contracts, its insertion is pulled toward its origin..