Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy I > Muscles > Flashcards

Muscles Flashcards

1
Q

Superficial pectoral m.

A
  • origin: sternum
  • termination: crest of greater tubercle and cranial humeral border
  • action: adduct thoracic limb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Deep (ascending) pectoral

A
  • origin: sternum
  • termination: greater and lesser tubercles of humerus
  • action: adduct thoracic limb and pull it caudally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Brachiocephalicus m.

A
  • origin: clavicular intersection
  • termination: distal cranial humerus, mastoid process of temporal bone, and dorsal midline of neck
  • action: pull thoracic limb cranially (and/or) depress and pull head and neck laterally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Omotransversarius m.

A
  • origin: wing of the atlas
  • termination: distal spine of the scapula
  • action: pull thoracic limb cranially (and/or) depress and pull head and neck laterally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Trapezius m.

A
  • origin: cervical part - dorsal neck, thoracic part - dorsal thorax
  • termination: spine of the scapula
  • action: elevate the thoracic limb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Rhomboideus m.

A
  • origin:
    – thoracis: dorsal thorax
    – cervicis: dorsal neck
    – capitis: occipital bone
  • termination: dorsal border of scapula and/or scapular cartilage
  • action: elevate the thoracic limb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Serratus ventralis m.

A
  • origin: cervical vertebrae, thoracic wall
  • termination: serrated face of scapula
  • action: support and/or elevate the trunk
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Latissimus dorsi m.

A
  • origin: thoracolumbar fascia
  • termination: teres major tuberosity
  • action: draw the thoracic limb caudally, flex or extend the humeral joint
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Sternocephalicus m.

A
  • origin: sternum
  • termination: mastoid process of temporal bone, occipital bone
  • action: depress head and neck; draw head and neck laterally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Sternohyoideus m .

A
  • origin: sternum
  • termination: basihyoid bone
  • action: pull tongue and larynx caudally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Sternothyroideus m.

A
  • origin: cranial aspect of sternum
  • termination: thyroid cartilage
  • action: pull tongue and larynx caudally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Deltoideus m.

A
  • origin: spine of scapula and acromion
  • termination: deltoid tuberosity of humerus
  • action: flex the humeral joint
  • nerves: suprascapular and axillary nerves
  • intrinsic lateral muscle of shoulder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Supraspinatus m.

A
  • origin: supraspinous fossa of the scapula
  • termination: greater tubercle of the humerus
  • action: extend the humeral joint
  • nerves: suprascapular and axillary nerves
  • intrinsic lateral muscle of shoulder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Infraspinatus m.

A
  • origin: infraspinous fossa of the scapula
  • termination: greater tubercle of the humerus
  • action: flex the humeral joint; abduct the limb at the humeral joint
  • nerves: suprascapular and axillary nerves
  • intrinsic lateral shoulder muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Teres minor m.

A
  • origin: caudal border of scapula
  • termination: teres minor tuberosity of the humerus
  • action: flex the humeral joint
  • nerves: suprascapular and axillary nerves
  • intrinsic lateral muscle of shoulder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Subscapularis m.

A
  • origin: subscapular fossa of the scapula
  • termination: lesser tubercle of humerus
  • action adduct limb at the humeral joint
  • nerves: subscapular, axillary, and musculocutaneous
  • intrinsic medial shoulder muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Teres major m.

A
  • origin: caudal border of scapula
  • termination: teres major tuberosity of humerus
  • action: flex the joint
  • nerves: subscapular, axillary, and musculocutaneous
  • intrinsic medial shoulder muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Coracobrachialis m.

A
  • origin: coracoid process of scapula
  • termination: crest of the lesser tubercle of the humerus
  • action: adduct limb at the shoulder
  • nerves: subscapular, axillary, and musculocutaneous
  • intrinsic medial shoulder muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Biceps brachii m .

A
  • origin: supraglenoid tubercle
  • termination: radial and ulnar tuberosities
  • action: flex the cubital joint and extend the humeral joint
  • nerves: musculocutaneous nerve
  • intrinsic cranial brachium muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Brachialis m.

A
  • origin: brachial groove of humerus
  • termination: proximal radius and/or ulna
  • action: flex the cubital joint
  • nerves: musculocutaneous nerve
  • intrinsic cranial brachial muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Triceps brachii m.

A
  • origin: caudal border of scapula (long head), proximal humerus (other heads)
  • termination: tuber olecrani
  • action: extend the cubital joint (all heads), flex the humeral joint (long head)
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Tensor fasciae antebrachii m.

A
  • origin: latissimus dorsi and fascia on caudal border of scapula
  • termination: tuber olecrani
  • action: extend the cubital joint (and tense the deep antebrachial fascia)
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Anconeus m.

A
  • origin: caudal aspect of the distal humerus
  • termination: tuber olecrani
  • action: extend the cubital joint
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Extensor carpi radialis m.

A
  • origin: lateral epicondyle of the humerus (and its crest)
  • termination: dorsal base of second and third metacarpal bones
  • action: extend the carpal joints
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Common digital extensor m.

A
  • origin: lateral epicondyle of the humerus
  • termination: extensor processes of the distal phalanges
  • action: extend the carpal and digital joints
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Lateral digital extensor m. (Thoracic)

A
  • origin: lateral epicondyle of the humerus
  • termination: distal phalanges (also the proximal and/or middle phalanges) of lateral digit(s)
  • action: extend the carpal joint and the digital joints of the lateral most digits
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Extensor carpi ulnaris m. (ulnaris lateralis m.)

A
  • origin: lateral epicondyle of the humerus
  • termination: accessory carpal bone and lateral base of fifth metacarpal bone
  • action: flex the carpal joints; abduct the manus
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Supinator m.

A
  • origin: lateral epicondyle of the humerus
  • termination: body of the radius
  • action: supination of the manus
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Abductor digiti I longus m. (abductor pollicis longus m.)

A
  • origin: proximal antebrachium (ulna)
  • termination: medial metacarpus
  • action: abduct the first digit
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Brachioradialis m.

A
  • origin: lateral epicondyle of the humerus
  • termination: fascia near the carpus
  • action: flexes the cubital joint and supinates the manus
  • nerves: radial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Flexor carpi radialis m.

A
  • origin: medial epicondyle of the humerus
  • termination: palmar base of metacarpal bones 2 and 3
  • action: flex the carpal joints
  • nerves: median and ulnar nerves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Flexor carpi ulnaris m.

A
  • origin: medial epicondyle and olecranon
  • termination: accessory carpal bone
  • action: flex the carpal joints
  • nerves: median and ulnar nerves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Superficial digital flexor m.(Thoracic)

A
  • origin: medial epicondyle of the humerus
  • termination: middle phalanges of the digits (palmer aspects)
  • action: flex the carpal joints, metacarpophalangeal, and proximal interphalangeal joints
  • nerves: median and ulnar nerves
34
Q

Deep digital flexor m. (Thoracic)

A
  • origin: humerus (medial epicondyle), radius, ulna
  • termination: flexor tubercles of distal phalanges
  • action: flex the carpal and digital joints
  • nerves: median and ulnar nerves
35
Q

Pronator teres m.

A
  • origin: medial epicondyle of the humerus
  • termination: medial body of radius
  • action: pronation of the manus
  • nerves: median and ulnar nerves
36
Q

Pronator quadratus m.

A
  • attachments: apposed surfaces of the radius and the ulna
  • action: pronation of the manus
  • nerves: median and ulnar nerves
37
Q

Extrinsic Muscles of the Thoracic Limb

A
  • superficial pectoral m.
  • deep pectoral m.
  • brachiocephalicus m.
  • omotransversarius m.
  • trapezius m.
  • rhomboideus m.
  • serratus ventralis m.
  • latissimus dorsi m.
38
Q

Muscles of the Ventral Neck

A
  • sternocephalicus m.
  • sternohyoideus m.
  • sternothyroideus m.
39
Q

Intrinsic Muscles of the Thoracic Limb (Lateral Muscles of the Shoulder)

A

innervated by the surpascapular and axillary nerves
- deltoideus m.
- supraspinatus m.
- infraspinatus m.
- teres minor m.

40
Q

Intrinsic Muscles of the Thoracic Limb (Medial Muscles of the Shoulder)

A

*innervated by the subscapular, axillary, and musculocutaneous nn.)
- subscapularis m.
- teres major m.
- coracobrachialis m.

41
Q

Intrinsic Muscles of the Thoracic Limb (Cranial Muscles of the Brachium)

A

innervated by the musculocutaneous nerve
- bicpes brachii m.
- brachialis m.

42
Q

Intrinsic Muscles of the Thoracic Limb (Caudal Muscles of the Brachium)

A

innervated by the radial nerve
- triceps brachii m.
- tensor fasciae antebrachii m.
- anconeus m.

43
Q

Intrinsic Muscles of the Thoracic Limb (Craniolateral Antebrachial Muscles)

A
  • innervated by the radial nerve*
  • extensor carpi radialis m.
  • common digital extensor m.
  • lateral digital extensor m.
  • extensor carpi ulnaris m.
  • supinator m.
  • abductor digiti I longus (abductor pollicis longus)
  • brachioradialis m.
44
Q

Intrinsic Muscles of Thoracic Limb (Caudomedial Antebrachial Muscles)

A
  • innervated by the median and ulnar nerves)
  • flexor carpi radialis m.
  • flexor carpi ulnaris m.
  • superficial digital flexor m.
  • deep digital flexor m.
  • pronator teres m.
  • pronator quadratus m.
45
Q

Muscles of the Manus

A
  • interosseous muscles (4 of them)
46
Q

Tensor fasciae latae m.

A
  • origin: tuber coxae
  • termination: fascia lata
  • tense the fasciae lata (flex the coxal joint and extend the genual joint)
  • lateral (dorsal) muscles of hip
  • cranial and caudal gluteal nerves
47
Q

Lateral (dorsal) muscles of the hip

A
  • innervated by cranial and caudal gluteal nerves
  • tensor fasciae latae m.
  • superficial gluteal m.
  • middle gluteal m.
  • piriformis m.
  • deep gluteal m.
  • articularis coxa m.
48
Q

Superficial gluteal m.

A
  • origin: sacrotuberous ligament
  • termination: third trochanter of the femur
  • action: abduct the limb (may have a minor extensor action on the coxal joint)
  • innervated by cranial and caudal gluteal nerves
49
Q

Middle gluteal m.

A
  • origin: gluteal surface of the ilium
  • termination: greater trochanter of the femur
  • action: extend the coxal joint; abduct the limb
  • innervated by the cranial and caudal gluteal nerves
50
Q

Piriformis m.

A
  • origin: sacrum and first caudal vertebra
  • termination: greater trochanter
  • action: extend the coxal joint
  • innervated by the cranial and caudal gluteal nerves
51
Q

Deep gluteal m.

A
  • origin: body of ilium and ischiatic spine
  • termination: greater trochanter (deep to the middle gluteal m.)
  • action: abduct the limb and extend the coxal joint
  • innervated by the cranial and caudal gluteal nerves
52
Q

Articularis coxa m.

A
  • lateral (dorsal) muscles of the hip
  • innervated by the cranial and caudal gluteal nerves
53
Q

Caudal Muscles of the Hip

A
  • innervated by the sciatic and obturator nerves
  • external obturator m.
  • interanal obturator m.
  • gemelli m.
  • quadratus femoris m.
54
Q

External obturator m.

A
  • origin: ventral aspect of os coxae around obturator foramen
  • termination: trochanteric fossa
  • action: adduct and/or rotate the limb laterally at the coxal joint
  • innervated by the sciatic and obturator nerves
55
Q

Internal obturator m.

A
  • origin: dorsal aspect of os coxae around obturator foramen
  • termination: trochanteric fossa
  • action: rotate the limb laterally at the coxal joint
  • innervated by the sciatic and obturator nerves
56
Q

Gemelli mm.

A
  • origin: lateral aspect of ischium
  • termination: trochanteric fossa
  • rotate the limb laterally at the coxal joint
  • innervated by sciatic and obturator nerves
57
Q

Quadratus femoris m.

A
  • origin: ventral aspect of ischium
  • termination: caudal femur near the trochanteric fossa
  • actionDNTK: extend coxal joint; adduct and/or rotate the limb laterally at the coxal joint
  • innervated by the sciatic and obturator nerves
58
Q

Caudal muscles of the thigh

A
  • innervated by the sciatic nerve
  • biceps femoris m.
  • semitendinosus m.
  • semimembranosus m.
59
Q

Biceps femoris m.

A
  • origin: ischiatic tuberosity and sacrotuberous ligament
  • termination: patella, tibia, and tuber calcanei
  • action: extend the coxal joint; variable action on the genual joint; extend the tarsocrural joint
  • innervated by the sciatic nerve
60
Q

Semitendinosus m.

A
  • origin: ischiatic tuberosity
  • termination: tibia and tuber calcanei
  • action: extend the coxal joint; variable action on the genual joint; extend the tarsocrural joint
  • innervated by the sciatic nerve
61
Q

Semimembranosus m.

A
  • origin: on or near the ischiatic tuberosity
  • termination: distal femur and proximal tibia
  • action: extend coxal joint; variable action on the genual joint
  • innervated by the sciatic nerve
62
Q

Medial muscles of the thigh

A
  • innervated by the obturator nerve (except sartorius)
  • sartorius m.
  • gracilis m.
  • pectineus m.
  • adductor m.
63
Q

Sartorius m.

A
  • has a cranial and caudal bellies (in dog only)
  • origin: crest of ilium
  • termination: medial aspect of the genual region
  • action: flex the coxal joint, cranial head extends the genual joint and caudal head flexes the genual joint
64
Q

Gracilis m.

A
  • origin: pelvic symphysis
  • termination: medial aspect of the genual region and tuber calcanei
  • action: adduct the limb, extend the coxal joint; flex the genual joint; extend the tarsocrural joint
  • innervated by the obturator nerve
65
Q

Pectineus m.

A
  • origin: iliopubic eminence (prepubic tendon and cranial border of pubis)
  • termination: distal body of femur
  • action: adduct the limb
  • innervated by the obturator nerve
66
Q

Adductor m.

A
  • origin: ventral surface of os coxae
  • termination: caudal surface of femur
  • action: adduct the limb and extend the coxal joint
  • innervated by the obturator nerve
67
Q

Cranial muscles of the thigh

A
  • innervated by the femoral nerve
  • quadriceps femoris m.
  • iliopsoas m.
68
Q

Quadriceps femoris m.

A
  • four heads: rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis
  • origin: rectus femoris, ilium; other three heads, proximal femur
  • termination: tibial tuberosity
  • action: flex the coxal joint (rectus femoris); extend the genual joint (all heads)
  • innervated by the femoral nerve
69
Q

Iliopsoas m.

A
  • origin: ilium (ilium) and lumbar vertebrae (psoas major)
  • termination: lesser trochanter
  • action: flex the coxal joint
  • innervated by the femoral nerve
70
Q

Craniolateral muscles of the crus

A
  • innervated by the common fibular nerve (common peroneal nerve)
  • cranial tibial m.
  • long digital extensor m.
  • lateral digital extensor m.
  • fibularis longus m.
71
Q

Cranial tibial m.

A
  • origin: lateral aspect of proximal tibia
  • termination: plantar base of metatarsal bones 1 and 2
  • action: flex the tarsocrural joint and rotate paw laterally
  • innervated by the common fibular nerve (common peroneal nerve)
72
Q

Long digital extensor m.

A
  • origin: extensor fossa of femur
  • termination: extensor processes of the distal phalanges
  • action: extend the genual joint; flex the tarsocrural joint; extend the digital joints
  • innervated by the common fibular nerve (common peroneal nerve)
73
Q

Lateral digital extensor m.(Pelvic)

A
  • origin: on and near the proximal aspect of the fibula
  • termination: lateral digits
  • action: flex the tarsocrural joint; extend the digital joints of the lateral most digits
  • innervated by the common fibular nerve (common peroneal nerve)
74
Q

Fibularis longus m. (peroneal longus m.)

A
  • origin: on or near lateral collateral ligament of the genual joint
  • termination: fourth tarsal bone and plantar base of metatarsal bones
    action: flex the tarsocrural joint and rotate the paw medially
  • innervated by the common fibular nerve (common peroneal nerve)
75
Q

Caudal muscles of the crus

A
  • innervated by the tibial nerve
  • gastrocnemius m. (medial and lateral heads)
  • superficial digital flexor m.
  • deep digital flexor m. (lateral and medial heads)
  • popliteus m.
76
Q

Gastrocnemius m.

A
  • medial and lateral heads
  • origin: distal caudal femur
  • termination: tuber calcanei of the calcaneus
  • action: flex the genual joint; extend the tarsocrural joint
  • innervated by the tibial nerve
77
Q

Superficial digital flexor m.(Pelvic)

A
  • origin: lateral supracondylar tuberosity of femur
  • termination: tuber calcanei and bases of middle phalanges
  • action: flex the genual joint; extend the tarsocrural joint; flex the metatarsophalangeal and proximal interphalangeal joints
  • innervated by the tibial nerve
78
Q

Deep digital flexor m.(Pelvic)

A
  • two heads: lateral and medial heads
  • origin: proximal caudal aspect of the tibia and fibula
  • termination: flexor tubercle of distal phalanges
  • action: extend the tarsocrural joint; flex the digital joints
  • innervated by the tibial nerve
79
Q

Popliteus m.

A
  • origin: popliteal fossa of the femur
  • termination: proximal caudal aspect of tibia
  • action: flex the genual joint
  • innervated by the tibial nerve
80
Q

Muscles of the pes

A
  • 4 interosseous muscles

Anatomy I (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions