Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Myology > Myology Specific Muscles > Flashcards

Myology Specific Muscles Flashcards

(52 cards)

Start Studying
1
Q

Trapezius

Divisions

A

Upper
Middle
Lower

Because their attachments and actions are different

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Trapezius - three different parts

Upper fibers

A, O, I

A

A -
bilaterally: extend the head and neck
Unilaterally: elevate the scapula (scapulothoracic joint) & upwardly rotate the scapula (s/t) joint

O - superior nuchal line, EOP (external occipital protuberance) and nuchal ligament (axial)

I - lateral 1/3 clavicle (anterior surface/appendicular)

Named for its shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Trapezius

Middle

A

O: Nuchal ligament at C6 spinal process (S.P.) C7 - T3

I: acromion process and spine of the scapula

A: retraction of the scapula (adduction)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Trapezius

Lower

A

O: S.P. of T4-T12

I: tubercle of the spine of the scapula

A: depression of the scapula (abduction)/ upward rotation of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Rhonboids

A, I, O

Minor

A

A-retraction of the scapula (adduction)

O-SP of C7 and T1

I-medial/vertebral border of the scapula level with the root spine of the scapula

Named for geometric shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Rhomboid major

A, I, O

A

A- retraction of the scapula (adduction)

O- SP of T2 to T5

I-medial/vertebral border of the scapula between the spine and the inferior angle

Named for geometric shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

levator scapula

A, I, O

A

A- elevate the scapula

O- TRanverse process of C1-4

I - superior angle of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Splenius cervicis

A, I, O

A

O - SP of T3-T6

I - TP OF C1-C3

A - unilaterally ipsilateral flexion and ipsilateral rotation head and neck
Bilaterally - extend/hyperextended the neck HYPEREXTENSION

Splenius - bandage ,

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Splenius capitis

A, I, O

A

A- bilateral: extension of head and neck
Unilateral : ipsilateral rotation and lateral flexion

O - lower portion of the nuchal ligament and spinous process of C7-T3

I - mastoid process of the superior nuchal line (lateral) of occipital bone

Second layer of posterior cervical muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Sternocleidomastoid

SCM

A, I, O

A

Named for it’s attachment. Sterno- sternum Clavicular- clavical mastoid - mastoid process

I: mastoid process of the temporal bone and lateral portion of the superior nuchal line of occiput

O: sternal head: top of the manubrium
Clavicular head: medial one third of the clavicle

Unilaterally: contralateral rotation of the head, ipsilateral flexion of the head/neck

Bilaterally: flexion of the neck, extension of the head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

anterior deltoid

A, O, I

A

O - lateral 1/3 of clavicle

A- all fibers: abduct the shoulder joint
Anterior: flex the humerus, medially rotate the shoulder joint, horizontally adduct the shoulder joint

I- deltoid tuberosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

middle deltoid

A, O, I

A

O - acromion

I- deltoid tuberosity

A- all fibers: abduct the shoulder joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Posterior deltoid

A, O, I

A

O - spine of the scapula
I - deltoid tuberosity

A - all fibers: abduct the shoulder joint

Posterior: extend the humerus, laterally rotate the shoulder joint, horizontally abduct the shoulder joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Triceps brachii

A, I, O

A

A - extends the elbow

O - long head - infraglenoid tubercle;
lateral head - posterior proximal 1/2 humerus lateral to radial/spiral groove;
medial head - posterior distal 1/2 humerus medial to radial/spiral groove

I - olecranon process of ulna for all three heads

Named for three heads, arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Extensior carpi radialis longus

A, I, O

A

Origin - distal 1/3 lateral supracondylar ridge (humerus) and lateral epicondyle via common extensor tendon

I - base 2nd metacarpal

A - extension and radial deviation of wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Extensor carpi radialis brevis

A, I, O

A

O - Lateral epicondyle via common extensor tendon

I - base of 3rd metacarpal

A - extension and radial deviation of wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Extensor carpi ulnaris

A, I, O

A

I- base of 5th metacarpal and hamate

O. - lateral epicondyle of humerus via the common extensor tendon and proximal posterior boarder ulna

A. - wrist extension and ulnar deviation or adduction of the wrist (combined action)

Named for location and action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Flexor carpi radialis

A, O, I

A

Named for action and location

A: flexion of wrist and Abduction of wrist (towards radius)

I: base of 2nd and 3rd metacarpal

O: medial epicondyle of humerus via the flexor tendon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Palaris longus

A, I, O

A

O - medial epicondyle via the flexor tendon

I - palmar aponeurosis

A - flexion of wrist

  • not present in everyone
  • *only tendon not under flexor retinaculum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Flexor carpi ulnaris

A, I, O

A

I- base of 5th metacarpal, hamate, and pisiform

O- medial epicondyle of humerus via the flexor tendon (humeral head); olecranon process ulna (ulnar head)

A - wrist flexion and ulnar deviation or adduction of the wrist (combined action)

Named for location and action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Rotator cuff

4 muscles

Study These Flashcards
A

Superaspinatus
Infraspinatus
Teres minor
Subscapularis

Superaspinatus runs deep to the trapezius

S,I,T,S

22
Q

Superaspinatus

A, I, O

Study These Flashcards
A

A- abduct the shoulder; stabilize the head of the humerus in glenoid cavity

O- superaspinous fossa of the scapula

I - greater tubercle of the humerus

23
Q

Infraspinatus

A, I, O

Study These Flashcards
A

A- laterally rotate the shoulder, adduct the shoulder, extension of the humerus

O - infraspinous fossa of the scapula

I - greater tubercle of the humerus

24
Q

Teres minor

A, I, O

Study These Flashcards
A

A - laterally rotate the shoulder, stabilize the head of the humerus in the glenoid cavity

O - upper 2/3 of lateral/axillary border

I - greater tuberercle of the humerus

25
Subscapularis A, I, O
A - medially rotate the shoulder, stabilize the head of the humerus in the glenoid cavity O - subscapular fossa of the scapula (costal surface of the scapula) I - lesser tubercle of the humerus
26
Pectoralis major Actions of both heads - synergysts
- Adduction - Horizontal adduction - Medial rotation
27
Pectoralis major A, O, I Clavicular head
Clavicular head O - medial half of the clavicle I - distal attachment: lateral lip of the bicipital grove (intertubercular groove)of the humerus A - flexion of the shoulder Named for size and location
28
Pectoral major A, O, I Sternocostal head
O: (proximal/axial attachment)manubrium & body of sternum. 1st to 6 or 7 costal cartilages I: (distal attachment) lateral lip of the bicipital groove of the humerus A: extension of the shoulder
29
Serratus anterior A, I, O
A- protraction/abduction of the scapula I- superior and inferior angle of the scapula and medial margin in between O - Lateral aspect of 1st through 8-9 ribs Named for shape and location Serrat - saw like; Weak muscle is a wing scapula
30
Pectoralis minor A, I, O
A - depress the scapula, anterior tilt of scapula, abduction (protraction) of the scapula, downward rotation of the scapula O - ribs 3-5 (anterior surface, near costal cartilage) I - coracoid process of the scapula Named for location and size
31
Quadratus lumborum A, I, O
Unilateral: ipsilateral flexion, lateral pelvic tilt (to same side) Bilateral: extension of the spine, fix the ribs during inhalation O- proximal attachment: 12th rib (internal margin), TP of L1-L4 I- distal attachment: iliac crest (internal lip)
32
Erector spinea
Erector - straight; spinea - spirals A collective name for the group of three muscles that extend and maintain balance of the spine and rib cage. They are used in strong contraction in coughing and straining. Can be referred to as "sacrospinalis", or "paraspinal" or "paravertebral"
33
Erector spinea group Actions same for all muscles
Unilaterally - laterally flex vertebral column to the same side Bilaterally - extend the vertebral column
34
Spinalis I, O
Closest to the spine; spinous process to spinous process O - spinous processes of the upper lumbar and lower thoracic vertebrae (THORACIS); ligamentum nuchae, spinous process of C-7 (CERVICIS) I- spinous process of upper thoracic (THORACIS); spinous process of cervical s, except C-1 (CERVICIS)
35
Longissimus I, O
Is the longest and goes to cranium (sacrum to mastoid process) Intermediate to the spinalis and the iliocostalis Transverse to transverse with some rib attachment O - TP lumbar to the common tendon (THORACIS); TP of upper thoracic vertebrae (CERVICIS AND CAPITIS) I - lower nine ribs and TP OF 4-12 thoracic vertebrae (THORACIS); TP of cervical vertebrae (CERVICIS); mastoid process of the temporal bone (CAPITIS)
36
Iliocostalis O, I
O: sacrum and ilium via common tendon (lumborum), inferior borders of ribs 1-12 (thoracic and cervicis I: inferior border of ribs 1-6 (thoracis), TP of lower cervicals (cervicis) LUMBORIUM REGION INSERT INFERIOR BORDER 6-12????
37
Teres major A, I, O
A: extend the shoulder, adduct the shoulder, medially rotate shoulder O: lateral side inferior angle of the scapula, lower half of axillary border of scapula I: medial lip of bicipital groove. Or crest of the lesser tubercle of the humerus ANTERIOR
38
Lattissimus dorsi A, I, O
A- extend the shoulder, Adduct the shoulder, Medially rotate the shoulder O - S.P. T8-L5, sacrum, iliac crest (external lip of posterior crest). Via the thoracolumbar aponeurosis I - medial lip of the bicipital groove of humerus
39
Gluteus Maximus A, O, I
O: posterior gluteal line of illum, posterior sacrum & coccyx, sacrotuberous ligament (sacrum to ischial tuberosity) I: gluteal tuberosity on posterior femur, lateral condyle of tibia via illiotibial band or tract A: extension of the hip
40
Gluteus medius A, O, I Named for
A-abduction of the femur at hip, medial rotation of the femur I - greater trochanter O - Posterior ilium between superior/posterior and middle/anterior gluteal lines Named for size
41
Gluteus minimus A, O, I Named for
A - abduction of femur at the hip, medial rotation of femur I - greater trochanter O - gluteal surface between anterior/middle and inferior gluteal lines Named for size
42
Piriformis A, I, O
A- lateral rotation of the femur and extension of the hip; abduction, horizontal abduction, and medial rotation of the FLEXED HIP I - distal attachment - upper border of the greater trochanter (superior aspect) O - proximal attachment - anterior surface of the sacrum Pear shaped
43
Semitendinosus A, I, O
A- flex the knee; extension of the hip I- proximal, medial shaft of the tibia at pes anserinus tendon O- ischial tuberosity
44
Semimembranosus A, I, O
A- flex the knee; extend the hip I- posterior aspect of the medial condyle of tibia O - ischial tuberosity
45
Biceps femoris Two heads femur A, O, I
Origin or proximal attachment: Long head - ischial tuberosity Short head - linea aspera Insertion or distal attachment: head of the fibula Action Long head- extend the hip and flex the knee Short head - flex the knee Biceps femoris is the lateral hamstring, the two medial hamstrings will be covered later Named for its number of heads and origin
46
Tensor fascia latea A, I, O
O - superior attachment - ASIS and adjacent lateral and posterior surface of the ilium I - the IT band and the lateral condyle of the tibia A - flex the hip, medially rotate the hip, abduct the hip and help stabilize the knee Named for action: tenses the broad bandage
47
rectus femoris O,I,A
named for the direction of it's fibers and it's location O: AIIS (anterior inferior illiac spine) I: Tibial tuberosity A: hip flexion & knee extension
48
Vastus lateralis A, O, I
A - extend the knee (tibiofemoral joint) O - lateral lip of the linea aspera, gluteal tuberosity and greater trochanter I - tibial tuberosity (via the patella and patellar ligament)
49
Vastus medialis A,O,I
A - extend the knee (tibiofemoral joint) O - medial lip of the linea aspera I - tibial tuberosity via the patella ligament
50
Vastus intermedius A, O, I
A - extend the knee O- anterior and lateral shaft of the femur I - tibial tuberosity ( via the patella and patellar ligament)
51
Iliacus A, I, O
A - origin fixed: flex the hip Insertion fixed: flex the trunk toward the thigh I - lesser trochanter O - iliac fossa
52
Psoas major A, I, O
A - origin fixed: flex the hip Insertion fixed: flex trunk toward the thigh Unilaterally- assist to laterally flex the lumbar spine O - bodies of the transverse process of lumbar vertebrae I - lesser trochanter

Myology (11 decks)

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