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A+P MCC 201+202 > Muscles: Know Origin, Insertion, and Action > Flashcards

Muscles: Know Origin, Insertion, and Action Flashcards

1
Q

Orbicularis Oris

A

Encircles the mouth

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2
Q

Orbicularis oculi

A

Encircles the eye

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3
Q

Digastric

OIA

A

O-Mastoid process of temporal bone
I-Mandible via pulley tendon on hyoid bone
A- Depresses mandible

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4
Q

Temporalis

OIA

A

O-Temporal bone
I-Coronoid process of mandible
A-Elevates mandible

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5
Q

Masseter

OOIA

A

O-Zygomatic bone
-Zygomatic arch
I-ramus of mandible
A-elevates mandible

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6
Q

Sternocleidomastoid

OOIAA

A 
O-Manubrium
  -Clavicle
I-Mastoid process of temporal bone
A-Rotates head, if one is contracted
  -Flexes head, if both are contracted
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7
Q

Internal oblique

OOOIIAA

A 
O-Iliac crest-ilium
  -Inguinal ligament
  -Thoracolumbar fascia
I-Lower ribs
  -Linea alba
A-Compresses abdomen
  -Flexes vertebral column laterally
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8
Q

External Oblique

OIIAA

A 
O-ribs 5-12
I-Iliac crest of ilium
 -Linea alba
A- Compresses abdomen
  -Flexes vertebral column laterally (same side as muscle)
external/lateral to internal obliques
fibers run as if you were to put your hands in a coat pocket
rotates torso to opposite side as muscle
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9
Q

External intercostal

A

runs inferomedially

aids in inhalation

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10
Q

Internal intercostal

A

Runs inferolaterally

aids in exhalation

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11
Q

Diaphragm

3 structures pass through. Give names of structures and openings.

A

Aorta through the aortic hiatus
Esophagus through esophogeal hiatus
Inferior vena cava through caval opening

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12
Q

Rotator Cuff

4 muscles

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

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13
Q

Supraspinatus

OIA

A

O-Supraspinous fossa of scapula- medially
I- Greater tubercle of humerus-laterally, slightly anterior
A- Abduction of arm

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14
Q

Infraspinatus

OIA

A

-crosses one joint
O-infraspinous fossa of scapula- Medial
I- Greater tubercle of humerus- Posterolateral
A- Rotates arm laterally- and I think posteromedially

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15
Q

Teres Minor

OIAAA

A

O-Lateral border of scapula- inferior, deep, dorsal
I- Greater tubercle of humerus (inferior to I of infraspinatus)
A-Adducts arm
-Extends arm
-Rotates arm laterally
Greater tubercle is lateral- anterior -> posterior. This attaches posterolaterally.

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16
Q

Subscapularis

OIA

A

crosses 1 joint
O-Subscapular fossa- Medial
I- Lesser tubercle of humerus (medial, anterior)
A- Rotates arm medially

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17
Q

Triceps brachii

OOOIAA

A 
Crosses 2 joints
O-Infraglenoid tubercle of scapula- Long head
  -Proximal 1/3 of humerus- Lateral head
  -Distal half of humerus- Medial head
I- Olecranon process of ulna
A- Extends forearm
  -Extends arm
Medial head is very short. Only on distal half of humerus. Underneath, on lateral and medial sides.
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18
Q

Brachioradialis

OIA

A

O-Proximal to capitulum of humerus
I-Proximal to styloid process of radius
A- Flexes semi-pronated forearm

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19
Q

Pronator Teres

OOIAA

A 
O-Medial epicondyle of humerus
O- Coronoid process of ulna
I-Mid-lateral surface of radius
A-Pronates forearm
A-Flexes forearm
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20
Q

Bicep Brachii

OOIAAA

A 
O-Supraglenoid tubercle of Scapula
O-Coracoid process of Scapula
I-radial tuberosity of radius
A-flexes supinated forearm
A-Supinates forearm
A-Flexes arm
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21
Q

Deltoid

OOOIAAA

A

O-Anterior Deltoid: Acromial end of clavicle lateral 1/3 of clavicle
O-Medial Deltoid: Acromion process of scapula
O-Posterior Deltoid: Spine of Scapula
I-Deltoid tuberosity of humerus
A-Medial Deltoid: Abducts arm
A-Posterior Deltoid- Extends arm
A-Anterior Deltoid- Flexes arm

22
Q

Pectoralis Major

OOIA

A

O-Clavicle
O-Sternum
I-Distal to greater tubercle-Humerus
A-Flexes arm

23
Q

Flexor/extendor carpi muscles

5 total

A

Flexor carpi radialis
Flexor carpi ulnaris
-both have O on medial epicondyle
Extensor digitorum
Extensor carpi ulnaris
extensor carpi radialis longus
-all three have O on lateral epicondyle

24
Q

Flexor carpi radialis

OIAAA

A 
Crosses 2 joints
O-Medial epicondyle of humerus
I-Metacarpals 2+3
A- Flexes hand
A-Abducts hand
A- Flexes forearm
25
Q

Flexor Carpi Ulnaris

OIIAA

A 
O-Medial epicondyle of humerus
I-Medial carpals
I-Metacarpal 5
A-Flexes hand
A-Adducts hand
26
Q

Extensor digitorum

OIA

A

O-Lateral epicondyle of humerus
I-Middle + distal phalanges
A-extends fingers

27
Q

Extensor carpi ulnaris

OIAA

A

O-Lateral epicondyle of humerus
I-Metacarpal 5
A-Extends hand
A-Adducts hand

28
Q

Extensor Carpi Radialis Longus

OIAA

A

O-Lateral epicondyle of Humerus
I-Metacarpal 2
A-Extends hand
A-Abducts hand

29
Q

Serratus Anterior

OIA

A

O-Ribs 1-8
I-Medial border of Scapula
A-Abducts Scapula superiorly
-pulls Scapula lateral/forward around the rib cage. Brings shoulder insertion forward to allow for greater arm movement.
-Lets you do ‘pushups’ without bending elbow

30
Q

Rhomboid Major

OIA

A

O-Spinous processes of T2-T5
I-Medial border- Scapula
A- Adducts scapula
-deep to trapezius. Runs posterolaterally from T2-T5

31
Q

Latissimus Dorsi

OIA

A

O-Spinous process of T7-Sacrum
I-Intertubercular sulcus of Humerus
A-Extends arm
-inferior/lateral to the trapezius

32
Q

Trapezius

OOIIIA

A 
O-Occipital bone
O-Spinous process- C7-T12
I-Acromion process- Scapula
I-Spine of Scapula
I-Acromial end of Clavicle
A-Elevates Scapula and Clavicle
33
Q

Iliopsoas

IAA

A

Consists of Iliacus and Psoas Major muscles
I-both insert @ lesser trochanter of femur
A-Flexes thigh
A-Flexes verrtebral column and pelvis

34
Q

Psoas Major

OIAA

A

O-L1-L5 bodies + transverse processes
I-Lesser trochanter of Femur
A-Flexes thigh
A-Flexes vertebral column and pelvis

35
Q

Iliacus

OIAA

A

O-Iliac fossa of Ilium
I-Lesser trochanter of Femur
A-Flexes thigh
A-Flexes vertebral column and pelvis

36
Q

Sartorius

OIA

A

O-Anterior superior Iliac spine of Ilium
I-Proximal medial surface of Tibia
A-Flexes thigh

37
Q

Tensor Fasciae Latae

OIAAA

A 
O-Iliac crest of Ilium
I-Tibia by way of Iliotibial Tract (IT band)
A-Flexes thigh
A-Abducts thigh
A-Rotates thigh medially
38
Q

Rectus Femoris

OIA

A

O-Anterior inferior iliac spine-Ilium
I-Tibial tuberosity-Tibia
A-Flexes thigh

39
Q

Gluteus Maximus

OOIAA

A 
O-Posterior Superior Iliac Spine
O-Sacrum
I-Gluteal tuberosity of Femur
A-Extends thigh
A-Rotates thigh laterally
40
Q

Adductor Magnus

OIA

A

O-Ramus of Ischium
I-Linea Aspera of Femur
A-Adducts thigh

41
Q

Rectus Abdominis

OIIA

A

O-Superior Ramus of Pubis
I-Xiphoid Process
I-Costal cartilage of ribs 5-7
A-Compress abdomen

42
Q

Vastus Intermedius

OIA

A

O-Anterior surface of Femur
I-Tibial Tuberosity-Tibia
A-Extends leg

43
Q

Vastus Medialis

OIA

A

O-Linea Aspera-Femur
I-Tibial Tuberosity-Tibia
A-Extends leg

44
Q

Vastus Lateralis

OIA

A

O-Linea Aspera- Femur
I-Tibial Tuberosity-Tibia
A-Extends leg

45
Q

Hamstring group- 3 muscles

A

Bicep Femoris
Semitendinosus
Semimembranosus

46
Q

Bicep Femoris

OOIA

A

O-Linea Aspera of Femur
O-Ischial Tuberosity-Ischium
I-Head of Fibula
A-Extends thigh

47
Q

Semitendinosus

OIA

A

O-Ischial Tuberosity of Ischium
I-Proximal medial surface of Tibia
A-Extends thigh

48
Q

Semimembranosus

OIA

A

O-Ischial tuberosity of Ischium
I-Medial condyle of Tibia
A-Extends thigh

49
Q

Gastrocnemius

OIA

A

O-Proximal to lateral and medial condyles of Femur
I-Calcaneus via the Achilles tendon
A-Plantar flexion of foot

50
Q

Tibialis Anterior

OIA

A

O-Anterolateral surface of Tibia
I-Metatarsal 1
A-Dorsiflexion in foot

A+P MCC 201+202 (2 decks)

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