Connective Tissue Wrappings & Attachments of Skeletal Muscle Tendons—cord-like structures Mostly collagen fibers Attach muscle belly to bone Figure 6.1

Connective Tissue Wrappings & Attachments of Skeletal Muscle Cells are surrounded & bundled by connective tissue Fascia—tough connective tissue, outside of the epimysium of the muscle belly, that creates a 3-D web around every muscle Figure 6.1

Connective Tissue Wrappings & Attachments of Skeletal Muscle Cells are surrounded & bundled by connective tissue Epimysium—covers the entire skeletal muscle (muscle belly) Figure 6.1

Connective Tissue Wrappings & Attachments of Skeletal Muscle Cells are surrounded & bundled by connective tissue Perimysium—wraps around a fascicle (bundle) of muscle fibers Figure 6.1

Connective Tissue Wrappings & Attachments of Skeletal Muscle Cells are surrounded & bundled by connective tissue Endomysium—encloses a single muscle fiber Figure 6.1

Microscopic Anatomy of Skeletal Muscle Sarcolemma—specialized plasma membrane that surrounds a myofibril Myofibrils—long organelles inside muscle cell

REVIEW of SKELETAL MUSCLE STRUCTURE: Play Doh Model Challenge Using the 4 colors of modeling clay, develop a mini replica of skeletal muscle, including… 1 muscle belly At least 3 fascicles At least 3 muscle fibers within each fascicle At least 3 myofibrils within each muscle fiber Muscle belly Fascicles Muscle fibers Myofibrils Per. 1 - The end

REVIEW of SKELETAL MUSCLE STRUCTURE: Play Doh Model Challenge Follow Up Questions: Which colors did you use to represent each structure? Which structure did you construct first? Explain why you did this Which part of the muscle wrapping was the most complicated to build? Explain your answer Draw and color your muscle structure and include labeling of the wrappings and their functions Muscle belly Fascicles Muscle fibers Myofibrils Per. 1 - The end

Week #6 (11/16-11/20) Warm Up – Fri, 11/20: - Review of Muscle #2 & Muscle organization Pick up:  Skeletal Muscle Crossword  Textbook Have out:  Mr. Muscle Man  Muscle Structure diagram Agenda: 1.Muscular System Latin Quiz 2.Skeletal Muscle Crossword Puzzle due Monday 11/23 Homework: 1. Muscles Quiz #2 (Identification) – Mon, 11/23 2. Muscular Sys. Rev. packet – Wed, 11/25 3. Muscle System Quiz #1 (Structure, Function & Organization) – Mon, 11/30 Anatomy Fun Fact: As the body gets cold, heat is generated due to shivering which causes rapid muscle contractions. Learning Goal: I will be able to describe the structure & function of the Muscular System.

Skeletal Muscle Organization Name the following structures & connective tissue wrappings of skeletal muscle. A B (structure) C (wrapping) D (structure) E (wrapping) F (structure) G (wrapping) H (structure) I (wrapping of H)

National Geographic: Bionics QUIETLY read the article “Bionics”. Annotate the article as you please (symbols, writing in margins, highlighting). Prompt: “We are giving people tools. They are better than what previously existed. But they are still crude, like a hammer, compared with the complexity of the human body. They can’t hold a candle to Mother Nature.” – Using your knowledge of the interdependence of organ systems in the human body & how skeletal muscle is organized & using direct information about bionics in the article, discuss why this quote is so truthful. – 3-paragraph response (opening, body, closing) STAPLE your annotated article to your written response & turn in to the Hmwk Bin! – DUE by the END of the PERIOD TODAY! Per. 3 – needs; go over WU & collect, The end Bionics Photo Gallery