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The Muscular System Part 2: • Naming and Identifying Muscles • Muscle of the head Get ready to take some notes Naming Skeletal Muscles • • • • • • • Direction Size Location # of origins Location of origin or insertion Shape Action Direction • Direction of muscle fibers: The terms – rectus (parallel) – transverse (perpendicular) – oblique (at an angle) in muscle names refer to the direction of the muscle fibers with respect to the midline of the body. Size • Maximus (largest), minimus (smallest), longus (longest), and brevis (shortest) are common suffixes added to muscle names. Location • A muscle name may indicate a nearby bone or body region. – Ex. temporalis muscle covers the temporal bone. – Ex. Rectus femoris Number of Origins • Biceps, triceps, and quadriceps indicate two, three, and four origins, respectively. Location of Origin or Insertion • The sternocleidomastoid names the sternum (“sterno”) and clavicle (“cleido”) as its origins and the mastoid process of the temporal bone as its insertion. Shape • The deltoid (triangular), trapezius (trapezoid), serratus (saw‐toothed), and rhomboideus major (rhomboid) muscles have names that describe their shapes. Action • The motion terms we just tested on such as – Flexor – Extensor – adductor Muscles of the Head • Procerus - between the • Depressor anguli oris - chin eyebrows • Depressor labii inferior- chin • Frontalis - raising eye brows • Mentalis - chin • Orbicularis Oculi • Platysma - neck eyes/blinking • Nasalis - nostrils • Orbicularis Oris - lips • Buccinator - whistling Chewing Muscles • Quadratus Labii Superioris - • Masseter elvis lip • Temporalis • Risorius - smiling • Medial Pterygoid - sphenoid • Zygomaticus - smiling • Levator Anguli Oris - smiling • Lateral Pterygoid - sphenoid • Corrugator -eyebrow furrows Muscles of the Head • Use the coloring sheet to help you locate each muscle from the lab guide • Rinse the bones off of a mannequin head • Paint the muscle on your mannequin head • Number the muscles on your mannequin • Make a key • Verbal quiz + kahoot on Monday • Computer practice Tuesday • Quiz Wednesday Practice Web Sites for the Face • https://www.getbodysmart.com/ap/muscularsystem/e xpression/menu/menu.html • https://www.kenhub.com/en/quizzes/facial-muscles • http://www.purposegames.com/game/muscles-of-thehead-neck-face-quiz • http://www.sporcle.com/games/STCCI11/label-majormuscles-of-face-and-head • https://play.kahoot.it/#/k/0c42de5d-09c6-4109-97808147e4494668 Wednesday 1/11/16 – Superficial Muscles Posterior and Anterior • LT: Today I will… – Identify the superficial muscles of human body • Entry Task: Take out your muscle guide coloring packet. Get ready to start identify muscles!!! Muscles of the Neck • Today we are… – Going over the basic, outer muscles of the neck otherwise known as the posterior and anterior triangles Splenius capitis • Shaking the head The Upper Limb: Muscles of Scapular Stabilization Musculotendinous Cuff Shoulder Joint 5 Muscles of Scapular Stabilization: This group of muscles are for support and movement of the clavicles and scapulae • • • • • Trapezius Rhomboids Levator scapulae Serratus anterior Pectoralis minor Levator Scapulae: Lifting the Scapula Trapezius • Function: lifting, retracting, rotating and depressing the scapulae Rhomboids • Function: Retraction of the scapulae Serratus Anterior • Function: Protraction/forward rotation of the scapula Pectoralis Minor • Function: Depression of the shoulder point 4 Muscles of Musculoteninous cuff: This group of muscles are for rotation, abduction of the upper limb • • • • Supraspinatus Infraspinatus Teres minor Subscapularis (not be tested on) Supraspinatus • Functions: Abduction Infraspinatus and Teres minor • Function: Lateral Rotation Teres Major: adduction, extension, medial rotation Subscapularis • Function: Medial Rotation Muscles Acting on the Shoulder Joint • • • • Deltoid Pectoralis Major Latissimus Dorsi Teres Major Deltoid: abduction, extension, flexion, medial and lateral rotation Pectoralis Major: Adduction, extension, flexion, medial rotation Latissimus Dorsi: adduction, extension, medial rotation Lets Learn These! Quiz tomorrow • Get a partner • Making a note card for each muscle • Lab Guide (neck, shoulders, and chest) – Name of the muscles on one side – Function on the other (one word. Ex. Flexion) Pair up with anyone you would like, pick a card from the top of your stack and identify it. Partners, you check for correctness Arms • • • • Shoulder and chest quiz Go over new muscles Make flashcards or sticky-notes Quiz tomorrow (at the end of class when we have done some stuff with the arm muscles) Arms and Shoulders • Flexor carpi radialis – Flexes wrist and abducts the hand • Flexor carpi ulnaris – flexes wrist and adducts hand Arms and Shoulders • Triceps – extends elbow • Extensor carpi radialis – extends wrists and abducts hand • Extensor digitorum – extends fingers and wrist • • • • Rectus Abdominis External Oblique Internal Oblique Transversus Abdominis Abdomen Hip/Thigh/Leg • Adductor muscles • Sartorius – flexes thigh and hip • Quads (vastus med. Inter. Lateralis, and rectus femoris) – extend the knee and flex the hip • Tibialis anterior – dorsiflexion • Soleus - dorsiflexion Hip/Thigh/Leg • Gluteus Maximus – extends the hip • Gluteus Medius – Abducts thigh • Hamstring Muscles (semitendinosus, semimembranosus, biceps femoris) – flex knee and extend hip • Gastrocnemius – plantar flexes foot and flexes knee Web Practice Sites • http://www.anatomyarcade.com/games/PAM /PAM.html (poke a muscle) • https://www.kenhub.com/en/quizzes/upperarm-muscles • http://msjensen.cbs.umn.edu/webanatomy/ muscular/default.html • http://highered.mheducation.com/sites/0072 907932/student_view0/chapter_9/labeling_ex ercises.html#