The Muscular System Part 2 Naming and Identifying

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 • Depressor anguli oris ‐ chin • Procerus ‐ between the 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/ expression/menu. html • https: //www. kenhub. com/en/quizzes/facial‐muscles • http: //www. purposegames. com/game/muscles‐of‐the‐ head‐neck‐face‐quiz • http: //www. sporcle. com/games/STCCI 11/label‐major‐ muscles‐of‐face‐and‐head • https: //play. kahoot. it/#/k/0 c 42 de 5 d‐ 09 c 6‐ 4109‐ 9780‐ 8147 e 4494668

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. html (poke a muscle) • https: //www. kenhub. com/en/quizzes/upper‐ arm‐muscles • http: //msjensen. cbs. umn. edu/webanatomy/ muscular/default. html • http: //highered. mheducation. com/sites/0072 907932/student_view 0/chapter_9/labeling_e xercises. html#