1 / 12

Muscular System

Muscular System. Chapter 8 Starting on pg. 169. Prefixes and Suffixes to know for this Chapter! . Calat – something inserted Erg - work. Ex. Synergist: muscle that works with a prime mover to produce a movement. Hyper - over, more. Hypertrophy: enlargement of muscle fibers.

mikkel
Download Presentation

Muscular System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Muscular System Chapter 8 Starting on pg. 169

  2. Prefixes and Suffixes to know for this Chapter! Calat – something inserted Erg- work. Ex. Synergist: muscle that works with a prime mover to produce a movement. Hyper- over, more. Hypertrophy: enlargement of muscle fibers. Inter- between. Laten- hidden. Latent period Myo- muscle. Myofibril: contractile structure within a muscle cell. Sarco- flesh. Sarcoplasm: material within a muscle fiber. Syn- together. Synergist: muscle that works with a prime mover to produce a movement. Tetan- stiff. Tetanic contraction: sustained musclular contraction. -troph- well fed. Muscular hypertrophy: enlargement of muscle fibers.

  3. 8.1 Introduction 3 types of muscles: • Smooth: muscles of internal organs. • Cardiac: heart muscle. • Skeletal: muscle on bones.

  4. 8.2 Structure of a Skeletal Muscle Connective Tissue Coverings: • Fascia: layers of fibrous connective tissue, separates an individual skeletal muscle from adjacent muscles and hold it in position. • Aponeuroses: broad fibrous sheets, may attach to bone, or to the coverings of adjacent muscles. • Epimysium: layer of connective tissue that closely surrounds a skeletal muscle. • Perimysium: extend inward from the epimysium and separate the muscle tissue into small compartments. • Fascicles: compartments that perimysium surround that contain bundles of skeletal muscle fibers. • Endomysium: layer of connective tissue that surrounds each muscle fiber within a fascicle.

  5. Skeletal Muscle Fibers • Sarcolemma: muscle cell membrane. • Sarcoplasm: muscle cell cytoplasm. • Myofibrils: found in sarcoplasm, threadlike structures that lie parallel to one another.

  6. Protein Filaments in Myofibrils Myosin: thick ones with the protein myosin. Actin: thin ones with the protein actin. Also: troponin and tropomyosin. *The organization of these filaments produces the alternating light and dark striations, or bands.

More Related