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frontalis origin
occipital bone
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frontalis insertion
tissues of eyebrows
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frontalis function
raises eyebrows - surprise!
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temporalis origin
temporal bone
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temporalis insertion
madible
-
temporalis function
closes jaw
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masseter origin
zygomatic arch
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masseter insertion
mandible
-
masseter function
closes jaw
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two muscles that close jaw
temporalis and masseter
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sternocleidomastoid origin
sternum; clavicle
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sternocleidomastoid insertion
mastoid process of temporal bone
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sternocleidomastoid function
flexes head - prayer muscle
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pectoralis major origin
clavicle, sternum
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pectoralis major insertion
humerus
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pectoralis major function
flexes and adducts upper arm
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rectus abdominis origin
pubic bon
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rectus abdominis insertion
xiphoid process of sternum
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rectus abdominis funtion
flexes lumbar region to allow bending forward
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external oblique origin
ribs
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external oblique insertion
pelvis
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external oblique function
stabalizes spine
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internal oblique origin
pelvis
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internal oblique insertion
ribs
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internal oblique function
stabilize spine to maintain posture; permits rotation at waist
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transversus abdominus origin
ribs; pelvis
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transversus abdominus insertion
pubic bone, linea alba
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transversus abdominus function
compresses contents of abdomen
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external intercostals origin
rib
-
external intercostals insertions
ribs
-
external intercostals functions
elevate ribs
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internal intercostal origin
rib
-
internal intercostal insertion
ribs
-
internal intercostal function
depress ribs
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latissimus dorsi origin
vertebrae
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latissimus dorsi insertion
humerus
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latissimus dorsi function
adducts and extends the arm backwards
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trapezius origin
occipital bone; vertebrae
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trapezius insertion
clavicle; scapula
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trapezius function
raises/lowers shoulders
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deltoid origin
clavicle, scapula
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deltoid insertion
humerus
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deltoid function
abducts, flexes, and rotates arm
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brachialis origin
humerus
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brachialis insertion
ulna
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brachialis function
flexes the forearm
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brachioradialis origin
humerus
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brachioradialis insertion
radius
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brachioradialis function
helps flex forearm
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triceps brachii origin
scapula; humerus
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triceps brachii insertion
ulna
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triceps brachii function
extends the forearm
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gluteus maximus origin
ilium
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gluteus maximus insertion
femur
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gluteur maximus function
extends and rotates the thigh outward
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gluteus medius origin
ilium
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gluteus medius insertion
femur
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gluteus medius function
adducts and rotates the thigh outward
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sartorius origin
iliac spine
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sartorius insertion
tibia
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sartorius function
adducts/flexes leg; permits sitting cross-legged
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-
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iliopsoas function
flexes the thigh
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quadraceps femoris origin
ilium; femur
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quadraceps femoris insertion
tibia
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quadraceps femoris function
flexes thigh. extends leg
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hamstrings origin
ischium; femur
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hamstrings insertion
fibula; tibia
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hamstrings function
extends the thigh
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gastrocnemius origin
femur
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gastrocnemius insertion
calcaneus
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gastrocnemius function
plantar flexion of foot
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tibialis anterior origin
tibia
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tibialis anterior insertion
tarsal bone
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tibialis anterior function
dorsiflexion of the foot
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fibularis longus origin
tibia, fibula
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fibularis longus insertion
phalanges
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fibularis longus function
dorsiflexion of the foot
-
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soleus insertion
calcaneus
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soleus function
plantar flexion of foot
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achilles tendon origin
gastrocnemius and soleus
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achilles tendon insertion
calcaneus (heelbone)
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achilles tendon function
strongest tendon, athletic injuries, vulnerable to sudden stress, sprinting
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