Term
Epicranius (frontal belly)
FACIAL EXPRESSIONS |
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Definition
0rigin- epicranial aponeurosis
Insertion- skin of eyebrows and base of nose
Action- raises eyebrows; wrinkles forehead horizontally
Antagonists- brow depressors |
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Term
Epicranius (occipital belly)
FACIAL EXPRESSIONS |
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Definition
O- occipital and temporal bones
I- epicranial aponeurosis
Ac- pulls scalp posteriorly
An- none |
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Term
Corrugator supercilii
FACIAL EXPRESSIONS |
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Definition
O- frontal bone above nasal bone
I- skin of eyebrow
Ac- draws eyebrows together and inferiorly; wrinkles forehead vertically (frowning) |
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Term
Orbicularis Oculi
FACIAL EXPRESSIONS |
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Definition
O- frontal and maxillary bones; ligaments around orbit
I- tissue of eyelids
Ac- closes eye (blinking, squinting, and winking) |
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Term
Zygomaticus (major and minor)
FACIAL EXPRESSIONS |
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Definition
O- Zygomatic bone
I- skin and muscle at corner of mouth
Ac- raises corners of mouth upward (smiling)
An- orbicularis oris |
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Term
Risorius
FACIAL EXPRESSIONS |
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Definition
O- fascia associated with masseter muscle
I-skin at corner of mouth
Ac- draws corner of lip laterally (tenses lips)
An- Orbicularis oris |
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Term
Orbicularis Oris
FACIAL EXPRESSIONS |
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Definition
O-Maxilla and mandible
I- skin and muscle of mouth
Ac- closes and protrudes lips (kissing and whistling)
An- risorius and zygomaticus |
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Term
Buccinator
FACIAL EXPRESSIONS |
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Definition
O- maxilla and mandible
I- Orbicularis Oris
Ac- compresses cheeks (whistling/sucking); holds food between teeth while chewing
An- Orbicularis oris |
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Term
Platysma
FACIAL EXPRESSIONS |
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Definition
O- fascia of chest
I- mandible; skin and muscle at corner of mouth
Ac- tenses skin of neck (shaving);pulls lower lip back and down
An- risorius and zygomaticus |
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Term
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Definition
O- Zygomatic arch and zygomatic bone
I- mandible
Ac- prime mover of jaw closure (elevates mandible)
An- all suprahyoid muscles |
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Term
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Definition
O- temporal bone
I- mandible
Ac- closes jaw (elevates and retracts mandible)
An- all suprahyoid muscles |
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Term
Sternocleidomastoid
HEAD MOVEMENT AND TRUNK EXTENSION |
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Definition
O- manubrium of sternum and clavicle
I- mastoid process of temporal bone
Ac-(bilaterally)flexes head foreward (unilaterally) rotates chin toward shoulder on opposite side
An- trapezius |
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Term
External Intercostals
BREATHING |
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Definition
O- inferior border of rib above
I- superior border of rib below
Ac- elevate rib cage (forced inspiration) synergists of diaphragm
An- internal intercostals |
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Term
Internal Intercostals
BREATHING |
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Definition
O- superior border of rib below
I- inferior border of rib above
Ac- depress rib cage (forced expiration)
An-external intercostals |
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Term
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Definition
O- inferior, internal surface of rib cage and sternum, costal cartilages of ribs 6-12 and lumbar vertebrae
I- central tendon
Ac- prime mover of inspiration (flattens on contraction); increases intra-abdominal pressure |
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Term
Rectus Abdominis
TRUNK MOVEMENT AND COMPRESSION OF ABDOMINAL VISCERA |
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Definition
O- pubic crest and symphysis
I- xiphoid process, costal cartilages of ribs 5-7
Ac- flexes and rotates lumbar region of vertebral column; compresses abdomen (sit-ups) |
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Term
External Oblique
TRUNK MOVEMENT AND COMPRESSION OF ABDOMINAL VISCERA |
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Definition
O- 5th-12th ribs
I- Linea alba, pubic crest and iliac crest
Ac- (bilateral) same as rectus abdominis (unilateral)trunk rotation and lateral flexion |
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Term
Internal Oblique
TRUNK MOVEMENT AND COMPRESSION OF ABDOMINAL VISCERA |
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Definition
O- lumbar fascia and iliac crest
I- linea alba and 10th -12th ribs
Ac- (bilateral) same as rectus abdominis (unilateral)trunk rotation and lateral flexion |
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Term
Transversus Abdominis
TRUNK MOVEMENT AND COMPRESSION OF ABDOMINAL VISCERA |
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Definition
O- 7th-12th ribs, lumbar fascia and iliac crest
I- linea alba and pubic crest
Ac- compresses abdomen |
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Term
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Definition
O- 3rd-5th ribs
I- coracoid process of scapula
Ac- with ribs fixed- pulls scapula forward and inferiorly; with scapula fixed- elevates rib cage |
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Term
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Definition
O- 1st-9th ribs
I- medial border of scapula
Ac- rotates scapula so that its inferior angle moves laterally and upward; important in abducting and raising arm, and in horizontal movements of arm (pushing and punching)
An- Trapezius and Latissimus Dorsi |
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Term
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Definition
O- clavicle, sternum and aponeurosis of external oblique muscle
I- greater tubercle of humerus
Ac- prime mover of arm flexion; adducts and medially rotates arm
An- deltoid |
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Term
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Definition
O- occipital bone; spines of all thoracic vertebrae
I- acromion and spine of scapula; clavicle
Ac- extends head; elevates scapula (shrugging shoulders); adducts scapula
An- Serratus Anterior |
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Term
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Definition
O- spines of T2-T5 vertebrae
I- medial border of scapula
Ac-adducts scapula
An-Serratus Anterior |
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Term
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Definition
O- spines of thoracic and lumbar vertebrae; iliac crest
I- humerus
Ac-prime mover of arm extension (brings arm down in power stroke); adducts arm
An- deltoid and serratus anterior |
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Term
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Definition
O- scapula at inferior angle
I- greater tubercle of humerus
Ac- rotates humerus laterally; stabilizes shoulder joint |
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Term
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Definition
O- clavicle; spine and acromion of scapula
I- deltoid tuberosity of humerus
Ac-prime mover of arm abduction; active during walking arm-swinging movements
An- Latissimus dorsi and pectoralis major |
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Term
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Definition
O- coracoid process and glenoid cavity
I- radial tuberosity
Ac- prime mover of forearm flexion
An- Triceps Brachii |
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Term
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Definition
O- humerus
I- ulna
Ac- flexes forearm ( lifts ulna as biceps lifts radius)
An-Triceps Brachii |
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Term
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Definition
O- humerus
I- styloid process of radius
Ac- synergist in forearm flexion
An-Triceps Brachii |
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Term
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Definition
O-scapula and humerus
I- olecranon of ulna
Ac- prime mover of forearm extension
An- Brachialis, biceps brac, and brachioradialis |
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Term
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Definition
O- pubis
I-medial aspect of tibia
Ac- adduct thigh
An- tensor fasciae latae |
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Term
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Definition
O- ilium
I- medial aspect of tibia
Ac- crosses legs (tailor's muscle) |
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Term
| Rectus Femoris (MAKES UP QUADRICEPS FEMORIS) |
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Definition
O- ilium and acetabulum
I- patella and tibial tuberosity
Ac- flexes thigh at hip; extends knee
An- Gluteus Maximus and hamstrings (biceps femoris, semimembranosus, and semitendinosus) |
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Term
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Definition
O- greater trochanter of femor
I- patella and tibial tuberosity
Ac- extends knees
An- hamstrings(biceps femoris, semimembranosus, and semitendinosus) |
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Term
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Definition
O-linea aspera of femur
I-patella and tibial tuberosity
Ac- extends knee
An- Hamstring (biceps femoris, semimembranosus, and semitendinosus |
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Term
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Definition
O- femur
I- tibial tuberosity
Ac- extends knee
An-hamstring (biceps femoris, semimembranosus, and semitendinosus |
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Term
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Definition
O- iliac crest
I-Iliotibial tract
Ac- makes iliotibial tract tout, flexes and abducts thigh at hip; rotates thigh medially
An- biceps femoris and gracilis |
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Term
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Definition
O-ilium, sacrum, coccyx
I- femur and iliotibial tract
Ac- major extensor of thigh (climbing stairs)
An-rectus femoris |
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Term
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Definition
O-ilium
I- greater trochanter of femur
Ac-abducts and medially rotates thigh |
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Term
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Definition
O-ilium
I-greater trochanter of femur
Ac- abducts and medially rotates thigh |
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Term
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Definition
O-ischial tuberosity; linea aspera of femur
I- proximal ends of tibia and fibula
Ac- extends thigh; flexes knee
An- Quadriceps (rectus femoris, vastus lateralis, vastus medialis and vastus intermedius |
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Term
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Definition
O- ischial tuberosity
I- medial aspect of tibia
Ac- extends thigh; flexes knee
An- Quadriceps (rectus femoris, vastus lateralis, vastus medialis and vastus intermedius |
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Term
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Definition
O- ischial tuberosity
I- medial aspect of tibia
Ac- extends thigh; flexes knee
An- Quadriceps (rectus femoris, vastus lateralis, vastus medialis and vastus intermedius |
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Term
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Definition
O-proximal tibia
I- 1st metatarsal
Ac- prime mover of dorsiflexion; inverts foot
An- Gastrocnemius and soleus |
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Term
| Extensor Digitorum Longus |
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Definition
O- proximal tibia and fibula
I- phalanges
Ac- prime mover of toe extensions; dorsiflexes foot
An- Gastrocnemius and soleus |
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Term
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Definition
O- proximal fibula
I- 1st metatarsal
Ac- plantar flexes and everts foot
An- tibialis anterior |
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Term
| Triceps Surae (Gastrocnemius) |
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Definition
O-Lateral and medial condyles of femur
I- calcaneus via calcaneal tendon
Ac- plantar flexes foot when knee is extended; flexes knee when foot is dorsiflexed
An- tibialis anterior; rectus femoris; and hamstrings |
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Term
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Definition
O- proximal tibia and fibula
I- calcaneue via calcaneal tendon
Ac- plantar flexes foot
An- Tibialis Anterior |
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