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A&P Muscle Unit

Terms in this set (55)

Epicranius
Occipitofrontalis
Frontalis
O: epicranial aponeurosis
I: skin above orbit
A: raises eyebrows
Occipitalis
O: occipital bone and mastoid process
I: epicranial aponeurosis
A: draws scalp back
Temporalis
O: temporal and frontal bones
I: mandible
A: elevates mandible
Orbicularis oculi
O: medial wall of orbit
I: skin around eyelids
A: close eyes
Zygomaticus major
O: zygomatic bone
I: orbicularis oris
A: raises corner of mouth
Zygomaticus minor
O: zygomatic bone
I: upper lip
A: raises upper lip
Orbicularis oris
O: muscles surrounding the mouth
I: skin at the corner of the mouth
A: closes and purses lips
Masseter
O: maxilla and zygomatic arch
I: mandible
A: elevates mandible
Buccinator
O: maxilla and mandible
I: orbicularis oris
A: whistle
Platysma
O: fascia over deltoid & pectoralis major ms
I: mandible
A: pouting
Sternocleidomastoid
O: sternum and clavicle
I: mastoid process
A: flexes head
Digastric
O: mandible
I: hyoid bone
A: depresses mandible
Mylohyoid
O: mandible
I: hyoid bone
A: elevates hyoid
Sternohyoid
O: manubrium and first costal cartilage
I: hyoid bone
A: depresses hyoid
Levator scapulae
O: C1-C4
I: scapula
A: elevates scapula
Trapezius
O: occipital bone and spines of vertebrae
I: clavicle and scapula
A: elevates scapula
Pectoralis major
O: clavicle, sternum, ribs
I: greater tubercle of humerus
A: adducts the arm
Pectoralis minor
O: ribs 2-5
I: coracoid process of scapula
A: abducts scapula
Serratus anterior
O: ribs 1-9
I: scapula
A: abducts scapula
Latissimus dorsi
O: ribs, vertebrae, sacrum, and ilium
I: humerus
A: adducts arm
External oblique
O: ribs 5-12
I: iliac crest and linea alba
A: compresses abdomen
Rectus abdominus
O: pubic crest and symphysis
I: cartilage of ribs and xiphoid process
A: compresses abdomen
Internal oblique
O: iliac crest
I: cartilage of ribs and linea alba
A: compresses abdomen
Transversus abdominus
O: iliac crest
I: xiphoid process, linea alba
A: compresses abdomen
Diaphragm
O: xiphoid process, costal cartilages of ribs
I: central tendon
A: flattens to increase volume of the thoracic cavity
Infraspinatus
O: infraspinous fossa of scapula
I: greater tubercle of humerus
A: adducts arm
Supraspinatus
O: supraspinous fossa o f scapula
I: greater tubercle of humerus
A: abducting arm
Teres major
O: scapula
I: humerus
A: extends arm at shoulder joint
Teres minor
O: scapula
I: humerus
A: adducts arm
Subscapularis
O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: medially rotates arm
Deltoid
O: clavicle, scapula
I: deltoid tuberoisty of humerus
A: abducts arm
Biceps brachii
O: scapula
I: radial tuberosity
A: flexes forearm
Brachialis
O: humerus
I: ulna
A: flexes forearm
Triceps brachii
O: scapula and humerus
I: olecranon of ulna
A: extends forearm
Brachioradialis
O: humerus
I: styloid process of radius
A: flexes forearm
Tensor fasciae latae
O: iliac crest
I: iliotibial tract
A: abduct thigh
Gluteus maximus
O: ilium and sacrum
I: gluteal tuberosity of femur
A: extends thigh
Gluteus medius
O: ilium
I: greater trochanter of femur
A: abducts thigh
Gluteus minimus
O: ilium
I: greater trochanter of femur
A: abducts thigh
Rectus femoris (quadriceps)
O: iliac spine
I: patella and tibial tuberosity
A: extends leg
Vastus medialis (quadriceps)
O: femur
I: patella and tibial tuberosity
A: extends leg
Vastus lateralis (quadriceps)
O: femur
I: patella and tibial tuberosity
A: extends leg
Vastus intermedius (quadriceps)
O: femur
I: patella and tibial tuberosity
A: extends leg
Sartorius
O: iliac spine
I: tibia
A: flexes leg
Gracilis
O: pubic symphysis
I: tibia
A: adducts thigh
Adductor longus
O: pubis
I: femur
A: adducts thigh
Adductor magnus
O: ischium and pubis
I: femur
A: adducts thigh
Biceps femoris (hamstrings)
O: iscial tuberosity and femur
I: fibula and tiba
A: flexes leg
Semimembranosus (hamstrings)
O: ischial tuberosity
I: tibia
A: flexes leg
Semitendinosus (hamstrings)
O: ischial tuberosity
I: tibia
A: flexes leg
Tibialis anterior
O: tibia
I: metatarsal and tarsal bones
A: dorsiflexes foot
Fibularis longus
O: tibia and fibula
I: metatarsal and tarsal bones
A: plantar flexes foot
Gastrocnemius
O: femur
I: achilles tendon and calcaneus
A: plantar flexes foot
Soleus
O: tibia and fibula
I: achilles tendon and calcaneus
A: plantar flexes foot
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