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Biology Lesson 7.5
 

Biology Lesson 7.5

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    Biology Lesson 7.5 Biology Lesson 7.5 Presentation Transcript

    • 4 Functions:1. Produce skeletal movement2. Maintain posture and body position3. Guard the entrances and exits of the body4. Transport things through the body – blood and lymph
    • MUSCLE TERMSSTRIATED – STRIPED INAPPEARANCENON-STRIATED – NOTSTRIPED IN APPEARANCE
    • The Muscular SystemThree basic muscle types are found in the body
    • 1. Cardiac muscle  only in heart  Striated (striped)  involuntary  contracts over a long period of time
    • 2. Smooth muscle  found in organs  Non-striated  involuntary  slow, powerful contractions
    • 3. Skeletal muscle  striated  voluntary  multinucleated  quick, powerful contractions
    • Anatomy of a Skeletal muscle•made of specialized cellscalled muscle fibers thatcontract quickly andpowerfully.
    • Anatomy of a Skeletal muscle•made of specialized cells called muscle fibers that contract quickly and powerfully.•Each muscle has thousands tomillions of muscle fibersbundled together.
    • Anatomy of a Skeletal muscle•made of specialized cells called muscle fibers that contract quickly and powerfully.•Each muscle has thousands to millions of muscle fibers bundled together.•Muscles are attached to bones bytendons (dense regularconnective tissue).•Muscle itself is called the belly.
    • tendonbelly
    • Muscles of the body
    • 1 Frontals
    • 4 & 13 Sternocleidomastoid muscle
    • 2 Temporalis and Masseter 3
    • Trapezius 14
    • Intercostal
    • 6 Pectoralis major
    • Deltoids 5
    • Latissimusdorsi 16
    • Biceps brachii 7
    • 15 Triceps brachii
    • Rectus abdominus 9 External oblique 8
    • 17 Erector spinae
    • 18 Gluteus maximus
    • 10 Adductor longus
    • 12 Quadriceps femoris
    • 19 Hamstrings
    • 11 Sartorius muscles
    • 20 gastrocnemius