BSCI201 - Muscles: includes orgin, insertion, and action

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65 Terms

1
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Frontal Belly of Epicranius

O: epicranial aponeurosis

I: eyebrow skin

A: raises eyebrows

<p>O: epicranial aponeurosis</p><p>I: eyebrow skin</p><p>A: raises eyebrows</p>
2
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Occipital Belly of Epicranius

O: occipital/temporal bones

I: epicranial aponeurosis

A: fixes aponeurosis pulls scalp posteriorly

<p>O: occipital/temporal bones</p><p>I: epicranial aponeurosis</p><p>A: fixes aponeurosis pulls scalp posteriorly</p>
3
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Oribicularis Oculi

O: frontal bone

I: eyelid

A: closes eye ;)

<p>O: frontal bone</p><p>I: eyelid</p><p>A: closes eye ;)</p>
4
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Zygomaticus Major (bigger)

Major

O: zygomatic bone

I: tissue at angle of mouth

A: raises angle of mouth (i.e. smiling!)

<p>Major </p><p>O: zygomatic bone</p><p>I: tissue at angle of mouth</p><p>A: raises angle of mouth (i.e. smiling!)</p>
5
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Zygomaticus Minor (smaller)

O: zygomatic bone

I: skin at the corner of mouth

A: raises angle of mouth (i.e. smiling!)

<p>O: zygomatic bone</p><p>I: skin at the corner of mouth</p><p>A: raises angle of mouth (i.e. smiling!)</p>
6
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Orbicularis Oris

O: maxilla and mandible

I: lips

A: compresses and purses lips (like a kiss!)

<p>O: maxilla and mandible</p><p>I: lips</p><p>A: compresses and purses lips (like a kiss!)</p>
7
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Buccinator

O: maxilla

I: orbicularis oris

A: compresses cheek (whistling)

<p>O: maxilla</p><p>I: orbicularis oris</p><p>A: compresses cheek (whistling)</p>
8
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Masseter

O: zygomatic bone

I: mandible

A: jaw closure (prime mover)

<p>O: zygomatic bone</p><p>I: mandible</p><p>A: jaw closure (prime mover)</p>
9
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Temporalis

O: temporal bone

I: mandible

A: jaw closure (assists masseter)

<p>O: temporal bone</p><p>I: mandible</p><p>A: jaw closure (assists masseter)</p>
10
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Platysma

O: chest fascia

I: mandible

A: tenses skin of neck (secondary embarrassment)

<p>O: chest fascia</p><p>I: mandible</p><p>A: tenses skin of neck (secondary embarrassment)</p>
11
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Sternocleidomastoid

O: manubrium of sternum

I: mastoid process of temporal bone

A: flexion of neck

<p>O: manubrium of sternum </p><p>I: mastoid process of temporal bone</p><p>A: flexion of neck</p>
12
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Pectoralis Major

O: clavicle, sternum

I: humerus

A: prime mover of arm flexion

<p>O: clavicle, sternum</p><p>I: humerus</p><p>A: prime mover of arm flexion </p>
13
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Pectoralis Minor

O: ribs

I: coracoid process of scapula

A: anterior/inferior scapular movement

<p>O: ribs</p><p>I: coracoid process of scapula</p><p>A: anterior/inferior scapular movement</p>
14
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Serratus Anterior

O: ribs

I: scapula

A: prime mover to protract scapula

<p>O: ribs</p><p>I: scapula</p><p>A: prime mover to protract scapula</p>
15
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Deltoid

O: clavicle

I: deltoid tuberosity of humerus

A: abduction of arm (prime mover)

<p>O: clavicle </p><p>I: deltoid tuberosity of humerus</p><p>A: abduction of arm (prime mover)</p>
16
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External Intercostals

O: inferior border of above rib

I: superior border of below rib

A: pulls ribs together to elevate (E=elevates)

<p>O: inferior border of above rib</p><p>I: superior border of below rib</p><p>A: pulls ribs together to elevate (E=elevates)</p>
17
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Internal Intercostals

O: superior border of rib below

I: inferior border of rib above

A: pulls ribs together to depress (I=inferior movement)

<p>O: superior border of rib below</p><p>I: inferior border of rib above</p><p>A: pulls ribs together to depress (I=inferior movement)</p>
18
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Diaphragm

O: rib

I: central tendon

A: inspiration (prime mover)

<p>O: rib</p><p>I: central tendon</p><p>A: inspiration (prime mover)</p>
19
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Rectus Abdominis

O: pubic bone (pubis)

I: xiphoid process of sternum

A: flexes & rotates vertebral column

<p>O: pubic bone (pubis)</p><p>I: xiphoid process of sternum</p><p>A: flexes &amp; rotates vertebral column</p>
20
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External Oblique

O: ribs

I: pubic bone (pubis), ilium

A: compresses abdominal wall

<p>O: ribs</p><p>I: pubic bone (pubis), ilium</p><p>A: compresses abdominal wall</p>
21
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Internal Oblique

O: ilium

I: pubic bone (pubis)

A: compresses abdominal wall

<p>O: ilium</p><p>I: pubic bone (pubis)</p><p>A: compresses abdominal wall</p>
22
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Transversus Abdominis

O: ilium

I: pubic bone

A: compresses abdominal contents

<p>O: ilium</p><p>I: pubic bone </p><p>A: compresses abdominal contents</p>
23
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Trapezius

O: occipital bone all Thoracic Vertebrae

I: acromion of scapula

A: raises scapula

<p>O: occipital bone all Thoracic Vertebrae</p><p>I: acromion of scapula</p><p>A: raises scapula</p>
24
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Latissimus Dorsi

O: spinous processes of thoracic/lumbar vertebrae

I: humerus

A: arm extension

<p>O: spinous processes of thoracic/lumbar vertebrae</p><p>I: humerus</p><p>A: arm extension</p>
25
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Infraspinatus

O: scapula

I: greater tubercle of humerus

A: lateral arm rotation

<p>O: scapula</p><p>I: greater tubercle of humerus</p><p>A: lateral arm rotation</p>
26
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Teres Minor

O: scapula

I: greater tubercle of humerus

A: lateral rotation of arm

<p>O: scapula</p><p>I: greater tubercle of humerus</p><p>A: lateral rotation of arm</p>
27
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Supraspinatus

O: scapula

I: greater tubercle of humerus

A: initiates arm abduction

<p>O: scapula</p><p>I: greater tubercle of humerus</p><p>A: initiates arm abduction</p>
28
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Teres Major

O: scapula

I: humerus

A: extends, adducts arm

<p>O: scapula</p><p>I: humerus</p><p>A: extends, adducts arm</p>
29
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Rhomboids Major

O: spinous process of C7

I: scapula

A: stabilizes scapula

<p>O: spinous process of C7</p><p>I: scapula</p><p>A: stabilizes scapula</p>
30
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Rhomboids Minor

O: Spinous processes of C7 vertebrae

I: scapula

A: stabilizes scapula

<p>O: Spinous processes of C7 vertebrae</p><p>I: scapula</p><p>A: stabilizes scapula</p>
31
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Triceps Brachii

O: glenoid cavity of scapula

I: olecranon of ulna

A: extension of forearm

<p>O: glenoid cavity of scapula</p><p>I: olecranon of ulna</p><p>A: extension of forearm</p>
32
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Biceps Brachii

O: glenoid cavity of scapula

I: radial tuberosity of radius

A: flexion of forearm

<p>O: glenoid cavity of scapula</p><p>I: radial tuberosity of radius</p><p>A: flexion of forearm</p>
33
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Brachioradialis

O: humerus

I: styloid process of radius

A: forearm flexion synergist

<p>O: humerus</p><p>I: styloid process of radius</p><p>A: forearm flexion synergist</p>
34
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Brachialis

O: humerus

I: coronoid process of ulna

A: flexor of forearm

<p>O: humerus</p><p>I: coronoid process of ulna</p><p>A: flexor of forearm</p>
35
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Pronator teres

O: medial epicondyle of humerus

I: radius

A: pronates forearm ("prone")

<p>O: medial epicondyle of humerus</p><p>I: radius</p><p>A: pronates forearm ("prone")</p>
36
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Flexor Carpi Radialis

O: medial epicondyle of humerus

I: metacarpals

A: flexor/abductor of hand

<p>O: medial epicondyle of humerus</p><p>I: metacarpals</p><p>A: flexor/abductor of hand</p>
37
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Palmaris Longus

O: medial epicondyle of humerus

I: skin of palm

A: tenses skin of palm

<p>O: medial epicondyle of humerus</p><p>I: skin of palm</p><p>A: tenses skin of palm</p>
38
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Flexor Carpi Ulnaris

O: medial epicondyle of humerus

I: metacarpals

A: flexor and abductor of hand

<p>O: medial epicondyle of humerus</p><p>I: metacarpals</p><p>A: flexor and abductor of hand</p>
39
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Extensor Carpi Radialis Longus

O: humerus

I: metacarpals

A: extends and abducts hand

<p>O: humerus</p><p>I: metacarpals</p><p>A: extends and abducts hand</p>
40
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Extensor Carpi Radialis Brevis

O: lateral epicondyle of humerus

I: metacarpals

A: extends and abducts hand

<p>O: lateral epicondyle of humerus</p><p>I: metacarpals</p><p>A: extends and abducts hand</p>
41
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Supinator

O: lateral epicondyle of humerus

I: radius

A: supinate ("soup") forearm

<p>O: lateral epicondyle of humerus</p><p>I: radius</p><p>A: supinate ("soup") forearm</p>
42
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Extensor Digitorum

O: lateral epicondyle of humerus

I: phalanges

A: finger extension

<p>O: lateral epicondyle of humerus</p><p>I: phalanges</p><p>A: finger extension</p>
43
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Extensor Carpi Ulnaris

O: lateral epicondyle of humerus

I: metacarpals

A: extends and adducts hand

<p>O: lateral epicondyle of humerus</p><p>I: metacarpals</p><p>A: extends and adducts hand</p>
44
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Iliopsoas

O: ilium, sacrum

I: lesser trochanter of femur

A: flex trunk at hip joint

<p>O: ilium, sacrum</p><p>I: lesser trochanter of femur</p><p>A: flex trunk at hip joint</p>
45
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Sartorius

O: ilium

I: tibia

A: flexes thigh

<p>O: ilium</p><p>I: tibia</p><p>A: flexes thigh</p>
46
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Adductor Magnus

O: ischium, pubis

I: linea aspera of femur

A: flex thigh

<p>O: ischium, pubis</p><p>I: linea aspera of femur</p><p>A: flex thigh</p>
47
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Adductor Longus

O: pubis

I: linea aspera of femur

A: adduct thigh

<p>O: pubis</p><p>I: linea aspera of femur</p><p>A: adduct thigh</p>
48
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Gracilis

O: pubic bone

I: surface of tibia inferior to medial condyle

A: adducts thigh

<p>O: pubic bone</p><p>I: surface of tibia inferior to medial condyle </p><p>A: adducts thigh </p>
49
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Rectus Femoris

O: ilium/coxal bones

I: tibial tuberosity of tibia

A: flexes thigh

<p>O: ilium/coxal bones</p><p>I: tibial tuberosity of tibia</p><p>A: flexes thigh</p>
50
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Vastus Lateralis

O: greater trochanter of femur

I: tibial tuberosity of tibia

A: extends leg

<p>O: greater trochanter of femur</p><p>I: tibial tuberosity of tibia</p><p>A: extends leg</p>
51
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Vastus Medialis

O: linea aspera of femur

I: tibial tuberosity of tibia

A: extends leg

<p>O: linea aspera of femur</p><p>I: tibial tuberosity of tibia</p><p>A: extends leg</p>
52
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Vastus Intermedius

O: femur

I: tibial tuberosity of tibia

A: extends leg

<p>O: femur</p><p>I: tibial tuberosity of tibia</p><p>A: extends leg</p>
53
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Tensor Fasciae Latae

O: ilium

I: iliotibial tract (ends at lateral epicondyle of humerus)

A: steadies trunk

<p>O: ilium</p><p>I: iliotibial tract (ends at lateral epicondyle of humerus)</p><p>A: steadies trunk</p>
54
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Biceps Femoris

O: linea aspera of femur

I: lateral condyle of tibia

A: extends thigh

<p>O: linea aspera of femur</p><p>I: lateral condyle of tibia</p><p>A: extends thigh</p>
55
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Semitendinosus

O: ischium

I: tibia

A: extends thigh

<p>O: ischium</p><p>I: tibia</p><p>A: extends thigh</p>
56
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Semimembranosus

O: ischium

I: medial condyle of tibia

A: extends thigh

<p>O: ischium</p><p>I: medial condyle of tibia</p><p>A: extends thigh</p>
57
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Gluteus Maximus

O: ilium

I: femur

A: powerful thigh extensor

<p>O: ilium</p><p>I: femur</p><p>A: powerful thigh extensor</p>
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Gluteus Medius

O: ilium

I: greater trochanter of femur

A: abducts thigh

<p>O: ilium</p><p>I: greater trochanter of femur</p><p>A: abducts thigh</p>
59
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Tibialis Anterior

O: lateral condyle of tibia

I: tarsals and metatarsals

A: dorsiflexion

<p>O: lateral condyle of tibia</p><p>I: tarsals and metatarsals</p><p>A: dorsiflexion</p>
60
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Extensor Digitorum Longus

O: lateral condyle of tibia

I: phalanges of foot

A: prime mover of toe extension

<p>O: lateral condyle of tibia</p><p>I: phalanges of foot</p><p>A: prime mover of toe extension</p>
61
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Gastrocnemius

O: medial & lateral condyles of femur

I: calcaneus

A: plantar flexes foot

<p>O: medial &amp; lateral condyles of femur</p><p>I: calcaneus </p><p>A: plantar flexes foot</p>
62
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Soleus

O: tibia

I: calcaneus via calcaneal tendon (achilles tendon!)

A: plantar flexion

<p>O: tibia</p><p>I: calcaneus via calcaneal tendon (achilles tendon!)</p><p>A: plantar flexion</p>
63
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Popliteus

O: lateral condyle of femur

I: tibia

A: flexes & rotates leg medially to unlock knee when leg flexion occurs

<p>O: lateral condyle of femur</p><p>I: tibia</p><p>A: flexes &amp; rotates leg medially to unlock knee when leg flexion occurs</p>
64
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Tibialis Posterior

O: tibia

I: tarsals

A: prime mover of foot inversion

<p>O: tibia</p><p>I: tarsals</p><p>A: prime mover of foot inversion</p>
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Flexor Digitorum Longus

O: tibia

I: phalanges of foot

A: flexes toes

<p>O: tibia</p><p>I: phalanges of foot</p><p>A: flexes toes</p>

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