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Muscle Origins & Insertions
Origins and Insertions of Muscles
44
Biology
Undergraduate 2
06/22/2010

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Term
Frontalis
Definition
galea aponeuritica to the muscles of forehead. action: raises eyebrows
Term
occipitalis
Definition
occipital bone to the galea aponeurotica. draws scalp posteriorly
Term
orbicularis oculi
Definition
frontal and maxiallary bones to eyelids. it closes they eyelids
Term
orbicularis oris
Definition
muscles around mouth to skin around the mouth. closes and protrudes the lips.
Term
buccinator
Definition
alveolar process of to skin at angle of mouth. it compresses the cheek.
Term
platysma
Definition
pec major and deltoid fascia to lower mandible. it depresses the mandible
Term
zygomaticus
Definition
zygomatic bone to skin and muscles at angle of mouth
Term
temporalis
Definition
temporal bone to coronoid process of mandible. it raises the mandible
Term
masseter
Definition
zygomatic arch to angle and ramus of mandible. it raises the mandible
Term
sternocleidomastoid
Definition
sternum to the mastoid process. it flexes cervical vertebral column
Term
digastric
Definition
mandibular symphysis to hyoid bone. raises the hyoid
Term
mylohyoid
Definition
mylohyoid line to hyoid bone. raises the hyoid
Term
sternohyoid
Definition
manubrium of sternum to hyoid bone. lowers the hyoid
Term
sternothyroid
Definition
manubrium to the thyroid. pulls the larynx inferiorly.
Term
thyrohyoid
Definition
thyroid to hyoid. lowers the hyoid.
Term
internal intercostal
Definition
superior border of rib below to inferior border of rib above. draws ribs together and lowers them.
Term
external intercostal
Definition
external surface of lower ribs to linea alba. it compresses the abdomen
Term
internal oblique
Definition
inguinal ligament to linea alba. it compresses the abdomen.
Term
transversus abdominis
Definition
inguinal ligament to linea alba. compresses the abdomen
Term
rectus abdominis
Definition
pubic crest to ziphoid process and costal cartilage. it compresses the abdomen
Term
quadratus lumborum
Definition
illiac crest to transverse process of lumbar vertebrae. it flexes the spine
Term
tensor fascia latae
Definition
illiac crest to illiotibial tract. it flexes and abducts the thigh
Term
gluteus maximus
Definition
gluteal line of the illium to the gluteal tuberosity of femur. extends and laterally rotates the thigh
Term
gluteus medius
Definition
outer surface of the ilium to greater trochanter of the femur. abducts and medially rotates the thigh.
Term
illiacus
Definition
illiac crest of the illium to lesser trochanter of femur. it flexes teh thigh
Term
psoas major
Definition
transverse process of lumbar vertebrae to the lesser trochanter of femur... flexes the thigh
Term
adductor magnus
Definition
inferior ramus of the pubis and ischium to the linea aspera. adducts thigh
Term
adducotr longus
Definition
pubic symphysis to the linea aspera. adducts the thigh.
Term
gracilis
Definition
pubic symph. to the medial surface of tibia. adducts the thigh
Term
sartorius
Definition
anterior superior illiac spine to the medial surface of tibia. flexes thigh and leg
Term
rectus femoris
Definition
anterior inferior illiac spine to the tibial tuberosity. flexes the thigh, extends the leg
Term
vastus lateralis
Definition
greater trochanter of femur to the tibial tuberosity. extends the leg.
Term
vastus medialis
Definition
linea asper to the tibial tuberoisty of the tibia. extends the leg.
Term
vastus intermedius
Definition
shaft of the femur to the tibial tuberosity. extends teh leg
Term
biceps femoris
Definition
isschial tuberosity and linea aspera on femur to the head of fibula and lateral condyle of fibula.. flexes leg, extends thigh.
Term
semitendinosis
Definition
ischial tuberosity to the proximal end of tibia. flexes leg, extends thigh
Term
semimembranosis
Definition
ischial tuberosity to proximal end of tibia. flexes leg, extends thigh
Term
tibialis anterior
Definition
lateral condyle of tibia to the first metatarsal. dorsiflexes and inverts foot
Term
extensor digitorum longus
Definition
lateral condyle of tibia to the 2-5 phalanges. dorsifelexes and everts foot
Term
fibularis longus
Definition
lateral surface of fibula to the first metatarsal. plantar flexes foot
Term
gastrocnemius
Definition
meidal and lateral condyles of femur to the calcaneous bone. flexes the leg
Term
soleus
Definition
proximal third of fibula to the calcaneous bone. plantar flexes the foot
Term
flexor digitorum longus
Definition
posterior surface of tibia to the 2-5 distal phalanges. flexes the toes
Term
tibialis posterior
Definition
interosseous membrane of tibia and fibula to the 2-4 metatarsals. plantar flexes the foot.
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