Muscles of the Body Naming Muscles a Location
Muscles of the Body
Naming Muscles a. Location – indicate the bone or body region • Example – temporalis muscle covers the temporal bone of the skull Rectus femoris? Tibialis anterior?
Naming Muscles b. Shape – what it looks like • Example – deltoid is trianglular
Naming Muscles c. Size – big, small, short, long • Example – glutius maximus is the largest Maximus – largest Minimus – smallest Longus – long Brevis - short
Naming Muscles d. Direction of muscle fibers – in relation to the midline of the body • Example – rectus (straight) or oblique (slanted)
Head muscles
Head muscles a. Frontalis – forehead, raises eyebrows
Head muscles b. Orbicularis Oculi – circles the eye, blinking and squinting
Head muscles c. Orbicularis Oris – circles the mouth, kissing and whistling
Head muscles d. Zygomaticus – smiling muscles, pull corners of mouth up 17 muscles to smile
Head muscles e. Masseter – main closer of jaw, grinds and chews
Head muscles f. Temporalis – also closes the jaw
Neck and Shoulders a. Sternocleidomastoid – pulls head toward shoulders or chest with resistance
Neck and Shoulders b. Platysma – draws angle of mouth out and downward Double chin or turkey gobbler
Neck and Shoulders c. Trapezius – pulls shoulders down and back
Neck and Shoulders d. Deltoid – pulls arm away from body
Body core a. Pectoralis major - pulls arm down and across chest
Body core b. Rectus abdominis – flexes and rotates lumbar region of vertebral column Aponeurosis – layers of broad, flat tendons
Body core c. External oblique – lateral flexing
Body core d. Latissimus dorsi – arm extension, internal rotation
Body core e. Gluteus maximus - extends thigh, largest muscle in the body
Arms a. Biceps brachii – flexes forearm at elbow
Arms b. Triceps brachii - extends forearm at elbow
Arms c. Brachioradialis - Flexes forearm at elbow
Legs a. Rectus femoris – extends the knee (part of quadriceps)
Legs b. Sartorius - flexes leg, abducts thigh, rotates thigh laterally (gum on shoe), longest muscle
Legs c. Adductors – pull leg in toward the body
Legs d. Biceps femoris – flexes knee (part of hamstrings)
Legs e. Gastrocnemius – extends the foot, flexes the knee
Legs f. Soleus – extends the foot
Legs g. Tibialis anterior – flexes and inverts foot
What muscle is it?
What muscle is it?
What muscle is it?
What muscle is it?
What muscle is it?
Issues with muscles
Hernia A. when part of an internal organ bulges through a weak area of muscle
Muscular Dystrophy B. Genetic diseases resulting in muscle weakness and loss
Tetanus C. (lockjaw) bacterial disease that causes muscles in neck and jaw to contract for long periods
Cramp D. out of control muscle contraction, locking the muscle in a very painful spasm
Strain E. Overstretching or tearing muscle from overuse or abuse
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