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

Muscles: Know Origin, Insertion, and Action Flashcards

(50 cards)

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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

Study These Flashcards
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

Study These Flashcards
A

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

23
Q

Flexor/extendor carpi muscles

5 total

Study These Flashcards
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

Study These Flashcards
A 
Crosses 2 joints
O-Medial epicondyle of humerus
I-Metacarpals 2+3
A- Flexes hand
A-Abducts hand
A- Flexes forearm
25
Flexor Carpi Ulnaris | OIIAA
``` O-Medial epicondyle of humerus I-Medial carpals I-Metacarpal 5 A-Flexes hand A-Adducts hand ```
26
Extensor digitorum | OIA
O-Lateral epicondyle of humerus I-Middle + distal phalanges A-extends fingers
27
Extensor carpi ulnaris | OIAA
O-Lateral epicondyle of humerus I-Metacarpal 5 A-Extends hand A-Adducts hand
28
Extensor Carpi Radialis Longus | OIAA
O-Lateral epicondyle of Humerus I-Metacarpal 2 A-Extends hand A-Abducts hand
29
Serratus Anterior | OIA
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
Rhomboid Major | OIA
O-Spinous processes of T2-T5 I-Medial border- Scapula A- Adducts scapula -deep to trapezius. Runs posterolaterally from T2-T5
31
Latissimus Dorsi | OIA
O-Spinous process of T7-Sacrum I-Intertubercular sulcus of Humerus A-Extends arm -inferior/lateral to the trapezius
32
Trapezius | OOIIIA
``` 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
Iliopsoas | IAA
Consists of Iliacus and Psoas Major muscles I-both insert @ lesser trochanter of femur A-Flexes thigh A-Flexes verrtebral column and pelvis
34
Psoas Major | OIAA
O-L1-L5 bodies + transverse processes I-Lesser trochanter of Femur A-Flexes thigh A-Flexes vertebral column and pelvis
35
Iliacus | OIAA
O-Iliac fossa of Ilium I-Lesser trochanter of Femur A-Flexes thigh A-Flexes vertebral column and pelvis
36
Sartorius | OIA
O-Anterior superior Iliac spine of Ilium I-Proximal medial surface of Tibia A-Flexes thigh
37
Tensor Fasciae Latae | OIAAA
``` 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
Rectus Femoris | OIA
O-Anterior inferior iliac spine-Ilium I-Tibial tuberosity-Tibia A-Flexes thigh
39
Gluteus Maximus | OOIAA
``` O-Posterior Superior Iliac Spine O-Sacrum I-Gluteal tuberosity of Femur A-Extends thigh A-Rotates thigh laterally ```
40
Adductor Magnus | OIA
O-Ramus of Ischium I-Linea Aspera of Femur A-Adducts thigh
41
Rectus Abdominis | OIIA
O-Superior Ramus of Pubis I-Xiphoid Process I-Costal cartilage of ribs 5-7 A-Compress abdomen
42
Vastus Intermedius | OIA
O-Anterior surface of Femur I-Tibial Tuberosity-Tibia A-Extends leg
43
Vastus Medialis | OIA
O-Linea Aspera-Femur I-Tibial Tuberosity-Tibia A-Extends leg
44
Vastus Lateralis | OIA
O-Linea Aspera- Femur I-Tibial Tuberosity-Tibia A-Extends leg
45
Hamstring group- 3 muscles
Bicep Femoris Semitendinosus Semimembranosus
46
Bicep Femoris | OOIA
O-Linea Aspera of Femur O-Ischial Tuberosity-Ischium I-Head of Fibula A-Extends thigh
47
Semitendinosus | OIA
O-Ischial Tuberosity of Ischium I-Proximal medial surface of Tibia A-Extends thigh
48
Semimembranosus | OIA
O-Ischial tuberosity of Ischium I-Medial condyle of Tibia A-Extends thigh
49
Gastrocnemius | OIA
O-Proximal to lateral and medial condyles of Femur I-Calcaneus via the Achilles tendon A-Plantar flexion of foot
50
Tibialis Anterior | OIA
O-Anterolateral surface of Tibia I-Metatarsal 1 A-Dorsiflexion in foot

A+P MCC 201+202 (2 decks)

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