Brainscape's Knowledge GenomeTM

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


See full index

Anatomy 1 > Muscles Masterlist > Flashcards

Muscles Masterlist Flashcards

OINAs

1
Q

Latissimus Dorsi

A

A: extend, adduct, IR shoulder
PA: thoracolumbar fascia, iliac crest, ribs 9/10-12, SP T7-T12, *inferior angle
DA: intertubercular sulcus of humerus
N: thoracodorsal nerve (C6, C7, C8)

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

Trapezius

A

UT A: bilateral extension of head and neck; unilateral ipsilateral lateral flexion & contralateral rotation of head and neck; elevate & upwardly rotate scapula
MT A: adduct/retract & stabilize scapula
LT A: depress & upwardly rotate scapula
PA: external occipital protuberance, superior nuchal line, nuchal ligament, SP C7-T12
DA: lateral 1/3 clavicle, acromion, spine of scapula
N: spinal accessory nerve (CN XI), ventral rami C3 and C4

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

Levator Scapulae

A

A: elevate & downwardly rotate scapula
PA: TP C1-C4
DA: medial border of scapula (b/w superior angle and root)
N: dorsal scapular nerve (C4, C5), cervical C3 and C4

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

Rhomboid Major/Minor

A

A: adduct/retract & downwardly rotate scapula, fix scapula to thoracic wall
PA: (major) SP T2-T5, (minor) nuchal ligament & SP C7-T1
DA: (major) medial border of scapula b/w root and inferior angle, (minor) medial border of scapular spine
N: dorsal scapular nerve (C4, C5)

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

Splenius

A

A: bilateral extension of head and neck, unilateral ipsilateral lateral flexion & ipsilateral rotate of head and neck
PA: nuchal ligament, SP C7-T6
DA: (capitis) mastoid process & superior nuchal line, (cervicis) TP C1-C4
N: dorsal rami of spinal nerves

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

Erector Spinae Group

A

A: bilateral extension of vertebral column, unilateral lateral flexion of vertebral column
PA: thoracolumbar fascia, iliac crest, SP T11-L5
DA: (iliocostalis) lower rib angles & cervical TP, (longissimus) b/w rib tubercles and angles to thoracic TP, (spinalis) upper thoracic SP & cranium
N: dorsal rami of spinal nerves

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

Rotatores

A

A: bilateral local extension of vertebral column, unilateral contralateral rotation of vertebral column
IA: TP of vertebrae
SA: SP C2-L5 (spans 1-2 segments)
N: dorsal rami of spinal nerves

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

Multifidus

A

A: bilateral extension of vertebral column, unilateral contralateral rotation of vertebral column, stabilize vertebrae
IA: SI ligaments, TP T1-T3, aponeurosis of erector spinae group, axillary processes C4-C7, mammillary processes L1-L5, PSIS, posterior sacrum
SA: SP of vertebrae (spans 2-4 segments)
N: dorsal rami of spinal nerves

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

Semispinalis

A

A: bilateral extension and unilateral contralateral rotation of head, neck, and thoracic spine
IA: TP C4-T12
SA: cervical and upper thoracic SP, occipital bone (spans 4-6 segments)
N: dorsal rami of spinal nerves

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

Rectus Capitis Posterior Major

A

A: rock and tilt head into extension, unilateral ipsilateral rotation of head
O: SP C2
I: lateral inferior nuchal line
N: suboccipital nerve (dorsal ramus C1)

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

Rectus Capitis Posterior Minor

A

A: rock and tilt head into extension, unilateral ipsilateral rotation of head
O: posterior tubercle of C1
I: medial inferior nuchal line
N: suboccipital nerve (C1)

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

Obliquus Capitis Superior

A

A: rock and tilt head into extension, ipsilateral lateral flexion of head
O: TP C1
I: occipital bone b/w nuchal lines
N: suboccipital nerve (C1)

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

Obliquus Capitis Inferior

A

A: ipsilateral rotation of head
O: SP C2
I: TP C1
N: suboccipital nerve (C1)

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

Deltoid

A

A: (anterior/clavicular) flex & IR shoulder, (middle/acromial) abduct shoulder, (posterior/spinal) extend & ER shoulder
O: clavicle, acromion, spine of scapula
I: deltoid tuberosity of humerus
N: axillary nerve (C5, C6)

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

Pectoralis Major

A

A: adduct, IR, and horizontally adduct shoulder; draw scapula anteriorly and inferiorly; (clavicular head) flex shoulder; (sternocostal head) extend shoulder from flexed position
O: (clavicular head) clavicle; (sternocostal head) sternum, superior six costal cartilages, external oblique muscle
I: lateral lip of intertubercular sulcus of humerus
N: medial and lateral pectoral nerves; clavicular head (C5, C6), sternocostal head (C7, C8, T1)

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

Pectoralis Minor

A

A: stabilize scapula against thoracic wall; (w/ fixed scapula) elevate thorax during forced inhalation
O: ribs 3-5
I: coracoid process
N: medial (C8, T1) and lateral (variable) pectoral nerves

17
Q

Teres Major

A

A: extend, adduct, IR shoulder
O: posterior surface of inferior angle of scapula
I: medial lip of intertubercular sulcus of humerus
N: lower subscapular nerve (C5, C6)

18
Q

Supraspinatus

A

A: initiates and assists w/ shoulder abduction, stabilize head of humerus in glenoid cavity
O: supraspinous fossa of scapula
I: greater tubercle of humerus
N: suprascapular nerve (C4, C5, C6)

19
Q

Infraspinatus

A

A: ER shoulder, stabilize head of humerus in glenoid cavity
O: infraspinous fossa of scapula
I: greater tubercle of humerus
N: suprascapular nerve (C5, C6)

20
Q

Teres Minor

A

A: ER shoulder (helper), stabilize head of humerus in glenoid cavity
O: lateral border of scapula
I: greater tubercle of humerus
N: axillary nerve (C5, C6)

21
Q

Subscapularis

A

A: IR shoulder, stabilize head of humerus in glenoid cavity
O: subscapular fossa of scapula
I: lesser tubercle of humerus
N: lower and upper subscapular nerve (C5, C6, C7)

22
Q

Serratus Anterior

A

A: draw scapula anteriorly and inferiorly, upwardly rotate scapula, hold scapula against thoracic wall
O: lateral parts of ribs 1-8/9
I: medial border of scapula
N: long thoracic nerve (C5, C6, C7)

23
Q

Sternocleidomastoid

A

A: unilateral lateral flexion & contralateral rotation of head and neck; bilateral extension (OA joint), flexion (cervical vertebrae), and/or extension of superior cervical w/ flexion of inferior cervical
SA: mastoid process, superior nuchal line
DA: (sternal head) manubrium of sternum, (clavicular head) medial 1/3 clavicle
N: spinal accessory nerve (CN XI), C3 and C4

24
Q

Platysma

A

N: facial nerve (CN VII)

25
Q

Suprahyoids

A

mylohyoid, geniohyoid, stylohyoid, digastric (anterior and posterior belly)

26
Q

Infrahyoids

A

thyrohoid, sternohyoid, sternothyroid, omohyoid (superior and inferior belly)

27
Q

Intercostals

A

A: (external) elevate ribs during inhalation, (internal) depress ribs during exhalation
O: inferior border of rib above
I: superior border of rib below
N: thoracic - segmental intercostal nerve

28
Q

Diaphragm

A

A: draw central tendon down to increase volume of thoracic cavity during inhalation
O: (sternal) inner part of xiphoid process, (costal) inner surface of ribs 7-12, (lumbar) L1-L2/3
I: central tendon
N: phrenic nerve (C3, C4, C5)

29
Q

Serratus Posterior Superior/Inferior

A

forced breathing
superior: SP C7-T3, elevate ribs w/ inhalation
inferior: SP T12-L3, depress ribs w/ exhalation

30
Q

Quadratus Lumborum

A

A: unilateral lateral tilt/hike of pelvis, unilateral extension and lateral flexion of vertebral column, bilaterally fix rib 12 during forced inspiration
SA: rib 12, tips of TP L1-L5
IA: iliac crest, iliolumbar ligament
N: ventral branches T12, L1-L4

31
Q

Psoas Major

A

A: balance trunk; acts superiorly to laterally flex vertebral column; acts inferiorly w/ iliacus to flex hip and (while sitting) flex trunk
SA: TP T12-L5, sides of lumbar vertebral bodies, discs b/w them
IA: lesser trochanter of femur
N: ventral rami L1, L2, L3

32
Q

Iliacus

A

A: (w/ psoas major) hip/thigh flexion, stabilize hip joint
SA: iliac fossa, anterior sacroiliac ligaments, sacrum
IA: lesser trochanter of femur, psoas tendon
N: femoral nerve (L2, L3, L4)

33
Q

Rectus Abdominis

A

fibers run vertically
A: flexion of vertebral column, compress abdominal viscera, posterior tilt of pelvis
N: thoraco-abdominal nerves (ventral rami T6-T12)

34
Q

External Oblique

A

fibers run down and in
A: bilateral flexion of vertebral column, unilateral lateral flexion and contralateral rotation of vertebral column, compress abdominal contents
N: thoraco-abdominal nerves (ventral rami T7-T11), subcostal nerve

35
Q

Internal Oblique

A

fibers run down and out
A: bilateral flexion of vertebral column, unilateral lateral flexion and ipsilateral rotation of vertebral column, compress abdominal contents
N: thoraco-abdominal nerves (ventral rami T6-T12), first lumbar nerve

36
Q

Transversus Abdominis

A

fibers run horizontally
A: compress and support abdominal viscera, antagonist of diaphragm w/ expiration
N: thoraco-abdominal nerves (ventral rami T6-T12), first lumbar nerve

37
Q

Pelvic Floor Superficial Layer

A
  • ischiocavernosus
  • bulbospongiosus
  • superficial transverse perineal muscle
  • external anal sphincter
  • innervated by pudendal nerve (S2, S3, S4)
38
Q

Pelvic Floor Deep Layer

A
  • levator ani (puborectalis, pubococcygeus, iliococcygeus)
  • coccygeus
  • obturator internus = side wall
  • piriformis = back wall

Anatomy 1 (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions