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Human Anatomy > Muscles > Flashcards

Muscles Flashcards

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1
Q

Trapezius

A

O: Occipital bone, C1-T12
I: Lateral clavicle, acromion and spine of scapula
A: Rotates scapula, elevates or depresses shoulder, stabilizes shoulder, retracts scapula

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2
Q

Rhomoideus Major

A

O: T2-T5 spinous processes
I: Vertebral border of scapula
A: Adducts, elevates, and inferiorly rotates scapula

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3
Q

Levator Scapulae

A

O: C1-C4
I: Superior angle of scapula
A: Elevates and adducts scapula, bends neck laterally

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4
Q

Serratus Anterior

A

O: 1-9 ribs
I: Vertebral border of scapula
A: Pulls scapula forward and to the chest

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5
Q

Pectoralis Minor

A

O: 3-5 ribs
I: Coracoid process of scapula
A: Depresses and pulls scapula forward

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6
Q

Rhomboideus Minor

A

O: C7-T1 spinous processes
I: Medial border of scapula, superior to spine
A: Retracts and elevates scapula, inferiorly rotates scapula

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7
Q

Pectoralis Major

A

O: Sternum clavicle costal cartilage
I: Intertubercular groove for humerus
A: Adducts and medially rotates humerus, pulls arm forward

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8
Q

Latissimus Dorsi

A

O: T7-L5, sacrum
I: Intertubercular groove for humerus
A: Adducts and medially rotates humerus, pulls arm back

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9
Q

Muscles that make up rotator cuff

A

Supraspinatus, infraspinatus, subscapularis, teres minor

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10
Q

Supraspinatus

A

O: Supraspinous fossa
I: Head of humerus
A: Hold head of humerus in glenoid fossa

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11
Q

Infraspinatus

A

O: Infraspinous fossa
I: Head of humerus
A: Hold head of humerus in glenoid fossa

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12
Q

Teres Minor

A

O: Inferior angle of scapula
I: Head of humerus
A: Hold head of humerus in glenoid fossa

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13
Q

Subscapularis

A

O: Subscapular fossa
I: Head of humerus
A: Hold head of humerus in glenoid fossa

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14
Q

Teres Major

A

O: Inferior angle of scapula
I: Medial lip of intertubercular groove
A: Adducts and medially rotates the humerus

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15
Q

Coracobrachialis

A

O: Coracoid process of scapula
I: Medial surface of humerus
A: Flexes and adducts the humerus

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16
Q

Deltoid

A

O: Lateral clavicle, acromion and spine of scapula
I: Deltoid tuberosity of humerus
A: Flex, extend, and abduct humerus

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17
Q

Biceps Brachii

A

(shoulder and elbow joints)
O: Supraglenoid tubercle, coracoid process of scapula
I: Radial tuberosity
A: Flexes and supinates forearm, flexes humerus

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18
Q

Brachialis

A

O: Anterior surface of humerus
I: Coronoid process of ulna
A: Flexes forearm

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19
Q

Brachioradialis

A

O: Above lateral epicondyle of humerus
I: Styloid process of radius
A: Flexes forearm

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20
Q

Triceps Brachii

A

O: Infraglenoid tubercle of scapula, lateral head of humerus, medial head of humerus
I: Olecranon process of ulna
A: Extends forearm and humerus

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21
Q

Pronator Quadratus

A

(crosses distal radioulnar joint)
O: Ventral surface of ulna, anterior and medial distal ulna
I: Ventral surface of radius, anterior and lateral distal radius
A: Pronation

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22
Q

Pronator Teres

A

(crosses proximal radioulnar joint)
O: Medial epicondyle of humerus
I: Lateral surface of radius
A: Pronates forearm

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23
Q

Flexor Carpi Radialis

A

O: Medial epicondyle of humerus
I: Carpals, metacarpals, and palmar aponeursis
A: Flexion of wrist

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24
Q

Palmaris Longus

A

O: Medial epicondyle of humerus
I: Carpals, metacarpals, and palmar aponeursis
A: Flexion of wrist

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25
Flexor Carpi Ulnaris
O: Medial epicondyle of humerus I: Carpals, metacarpals, and palmar aponeursis A: Flexion of wrist
26
Flexor Digitorum Superficialis
O: Ulna and radius, medial epicondyle of humerus I: Phalanges A: Flexion of the digits and wrist
27
Flexor Digitorum Profundus
O: Ulna and radius, medial epicondyle of humerus I: Phalanges A: Flexion of the digits and wrist
28
Extensor Carpi Radialis Longus
O: Lateral epicondyle of humerus I: Metacarpals and phalanges A: Extension of wrist
29
Extensor Carpi Radialis Brevis
O: Lateral epicondyle of humerus I: Metacarpals and phalanges A: Extension of wrist
30
Extensor Carpi Ulnaris
O: Lateral epicondyle of humerus I: Metacarpals and phalanges A: Extension of wrist
31
Extensor Digitorum
O: Lateral epicondyle of humerus I: Metacarpals and phalanges A: Extension of wrist and digits
32
Extensor Indicis
(crosses interphalaneal or metacarpal-phalangeal joint) O: Posterior ulna I: Posterior surface of proximal phalanx of second digit A: Extends index finger
33
Extensor Digiti Minimi
O: Lateral epicondyle of humerus I: Posterior surface of proximal phalanx of fifth digit A: Extend the little finger
34
Lumbricales
A: Flexes metacarpo-phalangeal joint
35
Dorsal Interossei
A: Abducts fingers from middle finger
36
Psoas Major (Minor)
(1/2 of Iliopsoas) O: Lumbar vertebrae I: Lesser trochanter A: Flex hip joint
37
Ilicus
(1/2 of Iliopsoas) O: Iliac Fossa I: Lesser trochanter A: Flex hip joint
38
Gluteus Maximus
O: Iliac crest, sacrum, coccyx I: Below greater trochanter of femur, iliotibil tract of the fasciae latae A: Extends and laterally rotates hip
39
Gluteus Medius
O: Lateral surface of ilium I: Greater trochanter of femur A: Abducts and medially rotates hip joint
40
Gluteus Minimus
O: Lateral surface of ilium I: Greater trochanter of femur A: Abducts and medially rotates hip joint
41
Tensor Fasciae Latae
O: Anterior iliac crest I: Tibia (by way of iliotibial tract) A: Abducts hip
42
Pectineus
O: Superior pubic ramus I: Below trochanter A: Adducts femur in hip joint, flexes hip
43
Adductor Brevis
O: Inferior ramus of pubis and ischium I: Upper 1/3 of linea aspera of femur A: Adducts femur in hip joint
44
Adductor Longus
O: Inferior ramus of pubis and ischium I: Middle 1/3 of linea aspera A: Adducts femur in hip joint
45
Adductor Magnus
O: Inferior ramus of pubis and ischial tuberosity I: Entire linea aspera A: Adducts femur in hip joint
46
Gracilis
O: Inferior ramus of pubis and ischium I: Proximal end of tibia A: Adducts femur in hip joint, flexes knee
47
Vastus Lateralis
O: Shaft of femur I: Tibial tuberosity A: Extend knee
48
Vastus Medialis
O: Shaft of femur I: Tibial tuberosity A: Extend knee
49
Vastus Intermedius
O: Shaft of femur I: Tibial tuberosity A: Extend knee
50
Rectus Femoris
O: Anterior inferior iliac spine I: Tibial tuberosity A: Flexes hip joint, extends knee
51
Sartorius
O: Anterior superior iliac spine I: Proximal tibia medially A: Flexes hip joint, rotates thigh laterally, flexes knee joint
52
Iliopsoas
O: Iliac fossa and vertebra (T12-L5) I: Lesser trochanter of femur A: Flexes hip
53
Biceps femoris
O: Ischial tuberosity, linea aspera of femur I: head of fibula A: Flex the knee joint
54
Muscles of the hamstrings
Biceps femoris, semitendinosus, semimembranosus
55
Semitendinosis
O: Ischial tuberosity I: Head of tibia medially A: Flex the knee joint
56
Semimembranosus
O: Ischial tuberosity I: Posterior side of medial condyle of tibia A: Flex the knee joint
57
Tibialis Anterior
O: Lateral side of tibia I: Medially, tarsals and metatarsals A: Dorsiflex foot
58
Extensor Digitorum
O: Shaft of fibula I: Phalanges A: Dorsiflex foot
59
Gastrocnemius
O: Lateral and medial condyles of femur I: Calcaneus via Achilles tendon A: Plantarflex foot
60
Soleus
O: Posterior proximal end of fibula, middle of tibia I: Calcaneus via Achilles tendon A: Plantarflex foot
61
Fibularis Longus
O: Shaft of fibula I: V Metatarsal A: Everts foot
62
Fibularis Brevis
O: Shaft of fibula I: V Metatarsal A: Everts foot
63
Rectus Abdominus
O: Pubic bone I: Xiphoid process, costal cartilage of ribs A: Flexes trunk, rotates trunk, laterally bends trunk, increases intra-abdominal pressure during defecation/urination/vomiting/expiration
64
External Oblique
O: Lower 8 ribs I: Iliac crest, linea alba A: Flexes trunk, rotates trunk, laterally bends trunk, increases intra-abdominal pressure during defecation/urination/vomiting/expiration
65
Internal Oblique
O: Iliac crest, inguinal ligament, thoracolumbar fascia I: Ribs and costal cartilage, linea alba A: Flexes trunk, rotates trunk, laterally bends trunk, increases intra-abdominal pressure during defecation/urination/vomiting/expiration
66
Transversus Abdominus
O: Iliac crest, inguinal ligament, thoracolumbar fascia, costal cartilage I: Linea alba, crest of pubis A: Flexes trunk, rotates trunk, laterally bends trunk, increases intra-abdominal pressure during defecation/urination/vomiting/expiration
67
Name the abdominal muscles
Rectus abdominis, external oblique, internal oblique, transversus abdominus
68
Diaphragm
O: Xiphoid process, costal cartilage of lower 6 ribs, lumbar vertebrae I: Central tendon A: Inspiration
69
External Intercostals
O: Inferior border of rib above I: Superior border of rib below A: Elevate ribs during inspiration
70
Internal Intercostals
????
71
Sternocleidomastoid
O: Manubrium and clavicle I: Mastoid process A: Rotates the head, flexion of the head and neck
72
Erector Spinae Group
(Long deep muscles of the back)
73
Occipitofrontalis
``` (frontal belly) O: Frontal bone I: Epicranial aponeurosis A: Wrinkles forehead skin transversely (occipital belly) O: Occipital bone-superior nuchal line A: Draws scalp backward ```
74
Orbicularis Oculi
O: Medial wall of orbit I: Eyelid A: Closes eyelids (squinting, blinking)
75
Orbicularis Oris
("kissing muscle") O: Maxilla and mandible I: Skin around mouth A: Brings lips together, protrudes lips
76
Buccinator
O: Maxilla I: Orbicularis oris and skin A: Compresses cheek to hold food between teeth during chewing, produces action of sucking
77
Risorius
O: Fascia masseter muscle I: Angle of mouth A: Smile
78
Masseter
O: Zygomatic arch I: Angle and ramus of mandible (on lateral side) A: Elevates mandible (closes mouth)
79
Temporalis
O: Portions of frontal, parietal, and temporal bones I: Coronoid process of mandible A: Elevates mandible (closes mouth)
80
Medial Pterygoid
A: Elevates and protracts mandible, produces side to side movement of mandible
81
Lateral Pterygoid
A: Elevates and protracts mandible, produces side to side movement of mandible

Human Anatomy (8 decks)

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