Muscle O I A Flashcards
Epicranius
0: aponeurosis, I: skin of eyebrows
A: elevates eyebrows,wrinkles forehead
Orbicularis oculi
0: frontal and maxilla, I: tissue of eyelids
A: closes eyes as in blinking
Buccinator
0: maxilla and mandible, I: orbicularis oris
A: compresses cheeks inward (whistling and sucking)
Zygomaticus
O: zygomatic bone, I: skin at corner of mouth
A: raises corners of mouth (smiling)
Orbicularis oris
O: maxilla and mandible, I: skin and muscle around mouth
A: closes and puckers the lip
Temporalis
O: temporal bone, I: mandible,
A: closes jaw, elevates and retracts mandible
Masseter
O: zygomatic bone, I: mandible,
A: closes jaw, elevates mandible
Sternocleidomastoid
0: sternum clavide, I: temporal bone,
A: rotates head to opposite side (one) flexes head (both)
Trapezius
O: occipital bone, thoracic vertebrae, I: clavicle, scapula,
A: elevates and addicts scapula, extends neck
levator scapulae
O: vertebrae (upper cervical). I: superior scapula,
A: elevates and addicts scapula
Rhomboid major/minor
O: vertebrae (C2 - T5)- I: scapula,
A: elevates and addicts scapula
Pectoralis minor
O: ribs (3-5), I: scapula,
A: pulls scapula downward and forward (abduct)
Serratus anterior
O: ribs (upper 8)- I: scapula,
A: pulls scapula against the chest wall
Supraspinatus
0: scapula, I: humerus,
A: hold head of humerus stable n glenold cavity, abducts arm (30°)
Infraspinatus
0: scapula, I: humerus,
A: holds head of humerus stable m glenoid cavity, rotates arm laterally
Teres minor
0: scapula, I: humerus,
A: holds head of humerus stable in glehold cavity, rotates arm laterally
Subscapularis
O: scapula, i: humerus,
A: holds head of humerus stable in glenad cavity, rotates arm medially
Pectoralis major
O: clavicle, sternum, ribs (1 - 6), I: humerus,
A: addicts, flexes and medially rotates arm at shoulder joint
Deltoid
O: lateral clavide, scapula, I: humerus,
A: abducts, flexes and medially rotates arm at shoulder joint
Caracabrachialis
0: scapula, I: humerus,
A: addicts and flexes arm at shoulder joint
Latissimus Doris
O: vertebrae, iliac crest and ribs (lower 4), I: humerus
A: addicts, extends and medially rotates arm at shoulder joint
Teres major (move arm)
O: scapula, I: humerus,
A: addicts, extends and medially rotates arm at shoulder joint
Biceps brachii
0: scapula, I: radius,
A: flexes forearm at elbow, supinates forearm
Brachialis
O: humerus, I: ulna
A: flexes forearm an elbow
Brachloradialis
0: humerus, I: radius,
A: flexes forearm at elbow
Triceps brachii
O: scapula, humerus,
A: extends forearm at elbow
Flexor carpi muscles
0: humerus, I: metacarpals,
A: flex hand at wrist
Flexor digitorum muscles
O: humerus, radius or ulna, I: middle or distal phalanges
A: flex the fingers
Flexor digitorum muscles
O: humerus, radius or ulna, I: middle or distal phalanges
A: flex the fingers
Extensor carpi muscles
0: humerus, I: metacarpals,
A: extend hand at wrist
Extensor digitorum
0: humerus, I: distal phalanges,
A: extends hands and fingers
Rectus abdominis
O: pubic bone, I: sternum, ribs,
A: flexes and rotates lumbar vertebrae, stabilizes pelvis
External oblique
O: ribs, I: allium, linea alba.
A: compresses abdomen, rotates and flexes trunk laterally
Internal oblique
0: ilium, I: pubis, ribs, linea alba
A: compresses abdomen, rotates and flexes trunk laterally
Transverse abdomens
0: ilium, ribs, I: pubis, linea alba
A: compresses abdomen
External intercostals
0: inferior border of rib above, I: superior border of rib below,
A: pulls ribs towards one another to elevate rib cage,and in inspiration
Internal intercostals
O: superior border of rib below, I: inferior border of rib above,
A: draw ribs together to depress rib cage, aid in expiration
Diaphragm
O: inferior border of rib cage and sternum, margins of thoracic cage, I: central tendon of diaphragm.
A: contracts to cause inspiration
Sartorius
0: ilium, I: tibia
A: flexes and rotates thigh laterally, flexes knee
Tensor fasciae latae
O: ilium, I: iliotibial tract,
A: flexes and abducts thigh rotates thigh medically
Iliopsoas
O: ilium, lumbar vertebrae, I: femur
A: flexes thigh towards the trunk, rotates thigh laterally
Gluteus Maximus
O: ilium, sacrum, coccyx, I: femur, iliotibial tract,
A: extends thigh at the hip, rotates thigh laterally
Gluteus medius
O: ilium, I: femur,
A: abducts and rotates thigh medially
Gluteus minimus
O: ilium, I: femur,
A: abducts and rotates thigh medially
Adductor longus
0: pubis, I: femur,
A: addicts, flexes and rotates thigh medially
Adductor breves
. O: pubis, I: femur,
A: addicts, flexes and rotates thigh medially
Adductor Magnus
O: ischium, pubis- I: femur,
A: addicts, flexes and rotated thigh medially, extends thigh
Pectineus
0: pubis, I: posterior femur,
A: addicts, flexes and rotates thigh medially
Gracilis
O: pubis, I: tibia,
A: addicts thigh, flexes and rotates leg medially
Rectus femurs
0: ilium, I: patella, tibia, via the patellar ligament.,
A: extends legat knee, flexes thigh at hip
Vastus lateralis
O: femur, I: patella and tibia via patellar ligament,
A: extends leg at knee
Vastus medialis
0: femur, I: patella and tibia via patellar ligament,
A: extends leg at knee
Vastus intermedius
O: femur, I: patella and tiara via patellar ligament,
A: extends leg at knee
Biceps femoris
O: ischium, femur, I: tibia, fibula,
A: flexes and rotates leg laterally, extends thigh
Semitendinosus
O: ischium, I:tibia,
A: flexes and rotates leg medially, extends thigh
Semimembranosus
O: ischium, I: tibia,
A: flexes and rotates leg medially, extends thigh
Tibialis anterior
0: tibia, I: medial cuneiform and 1rst metatarsal,
A: dorsiflexes and foot at ankle
Extensor digitorum longus
O: tibia, I: middle and distal phalanges,
A: dorsiflexes and everts foot at ankle, extends toes
Fibularis longus
0: fibula, I: 1st metatarsal and medial cuneiform,
A: plantar flexes and events foot an ankle
Gastrocnemius
O: femur, I: calcaneus via calcaneal tendon,
A. Plantar flexes foot at ankle, flexes leg at knee
Soleus
O: tibia, fibula, I: calcaneus via calcaneal tendon,
A: plantar flexes foot at ankle
Flexor digitorum longus
O: tibia, fi distal phalanges of toes 2-5,
A: plantar flexes and inverts foot at ankle, flexes toes
Flexor digitorum longus
O: tibia, fi distal phalanges of toes 2-5,
A: plantar flexes and inverts foot at ankle, flexes toes
Tibialis posterior
O: tibia, fibula, I: under foot medically into tarsals and metatarsals,
A: plantar flexes and inverts foot at ankle
Tibialis posterior
O: tibia, fibula, I: under foot medically into tarsals and metatarsals,
A: plantar flexes and inverts foot at ankle