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Anatomy Midterm > Anatomy Midterm > Flashcards

Anatomy Midterm Flashcards

1
Q

Serratus posterior superior & inferior origin, insertion, action, innervation

A

SPS: spinous processes of C7-T2 // ribs
SPI: Spinous processes of T11-L2 // ribs
action: role in respiration & proprioception
Innervation: intercostal n., anterior rami

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2
Q

Splenius origin, insertion, action, innervation

A

O: spinous processes of C3-T6
I: Splenius capitus: mastoid process
Splenius cervicis: transverse processes of C1-C3
A: lateral flexion of neck, rotate head, extend head & neck
Innervation: posterior rami of spinal n.

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3
Q

Erector spinae group (illiocostalis, longissimus, spinalis) origin, insertion, action, innervation

A

O: SP of lumbar vertebrae, sacrum, iliac crest
I: illiocostalis - ribs
longissimus - TP
spinalis - SP
A: extend & lateral flexion of vertebral column
Innervation: posterior rami of spinal nerves

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4
Q

Transversospinal group (semispinalis, multifidus, rotatores) origin, insertion, action, innervation

A

O: TP
I: SP
A: extend, rotate, stabilze vertebral column
Innervation: posterior rami of spinal n.

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5
Q

Segemental group (interspinalis, intertransversarii*, levator costarum) action, innervation

A

A: extend, lateral flex, rotate vertebral column, elevate ribs in respiration
Innvervation: posterior rami of spinal n.
*anterior rami of spinal n.

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6
Q

Trapezius origin, insertion, action, innervation

A

O: base of skull, nuchal ligament, SP C7-T12
I: Lateral 1/3 of clavicle, acromion, spine of scapular
A: elevate, retract, depress scapula
Innervation: spinal accessory n.

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7
Q

Latissimus dorsi origin, insertion, action, innervation

A

O: SP of lower thoracic vertebrae, thoracolumbar fascia, illiac crest
I: floor of intertubercular groove of humerus
A: extend, adduct, medially rotate humerus
Innervation: thoracodorsal n.

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8
Q

Rhomboid major & minor origin, insertion, action, innervation

A

O: minor - SP C7 & T1
major - SP T2-T5
I: minor - medial border of scapula (at level of spine of scapula)
major - medial border of scapula (at level below spine of scapula)
A: Retract, rotate scapula
Innervation: dorsal scapular n.

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9
Q

Levator Scapulae origin, insertion, action, innervation

A

O: TP C1-C4
I: Medial border of scapula (at level above spine of scapula)
A: elevate, rotate scapular
Innervation: dorsal scapula n.

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10
Q

What is 4 2 2 4?

A

4 - Levator Scapulae TP C1-C4
2 - Skip 2
2 - Rhomboid minor SP C7-T1
4 - Romboid major SP T2-T5

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11
Q

SITS muscles

A

supraspinatus, infraspinatus, teres minor, subscapularis

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12
Q

Supraspinatous origin, insertion, action, innervation

A

O: Supraspinous fossa of scapula
I: greater tubercle of humerus - superior facet
A: Abducts humerus
Innervation: suprascapular n.

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13
Q

Infraspinatous origin, insertion, action, innervation

A

O: Infraspinous fossa of scapula
I: greater tubercle of humerus - middle facet
A: lateral rotation of humerus
Innervation: suprascapular n.

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14
Q

Teres minor origin, insertion, action, innervation

A

O: lateral border of scapula
I: greater tubercle of humerus - inferior facet
A: Lateral rotation of humerus
Innervation: Axillary n.

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15
Q

Subscapularis origin, insertion, action, innervation

A

O: Subscapular fossa of scapula
I: lesser tubercle of humerus
A: Medial rotation of humerus
Innervation: upper & lower subscapular n.

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16
Q

Deltoid origin, insertion, action, innervation

A

O: Lateral 1/3 of clavicle, acromion, spine of scapula
I: deltoid tuberosity of humerus
A: anterior - flex & medial rotation of humerus
middle - abduct humerus
posterior - extend & lateral rotation of humerus
Innervation: axillary n.

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17
Q

Teres major origin, insertion, action, innervation

A

O: lateral border of scapula - inferior aspect
I: intertubercular groove of humerus - medial lip
A: adduction & medial rotation of humerus
Innervation: lower subscapular n.

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18
Q

Bones of the pectoral girdle

A

clavicle, acromion, spine of scapula, suprascapular notch, coracoid process of scapula

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19
Q

Important landmarks on humerus

A

intertubercular groove, greated & lesser tubercle (3 facets: superior, middle, inferior), deltoid tuberosity

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20
Q

Pectoralis major origin, insertion, action, innervation

A

O: medial half of clavicle, manubrium, sternum
I: intertubercular groove of humerus - lateral lip
A: flexion, adduction, and internal rotation of the humerus
Innervation: medial & lateral pectoral n.

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21
Q

Pectoralis minor origin, insertion, action, innervation

A

O: ribs 3-5
I: coracoid process
A: stabilization, depression, abduction or protraction, internal rotation and downward rotation of the scapula
Innervation: medial pectoral n.

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22
Q

Serratus Anterior origin, insertion, action, innervation

A

O: ribs 1-8
I: anterior aspect of medial border of scapula
A: protraction & rotation of scapula
Innervation: long thoracic n.

23
Q

Subclavius origin, insertion, action, innervation

A

O: rib 1
I: clavicle - inferior aspect
A: Anchors and depresses clavicle, stabilizes clavicle, resists tendency of clavicle to dislocate @ sternoclavicular joint
Innervation: n. to subclavius

24
Q

Muscles that attach at intertubercular groove of humerus

A

Pec major, lats, teres major (Think “PLT”)

25
Q

5 components thta make up borders of the Axilla

A

1) anterior wall: pec major & minor
2) posterior wall: subscapularis, latissimus dorsi, teres major
3) medial wall: upper ribs covered by serratus anterior
4) laterall: humerus
5) skin

26
Q

Important landmark muscle when looking for brachial plexus

A

pectoralis minor

27
Q

Brachial plexus origin

A

anterior rami of spinal n C5, C6, C7, C8, T1

28
Q

What makes up the “M” of the BP?

A

Musculocutaneous n, median n, ulnar n. (MMU)

29
Q

5 components to BP

A

Roots - Trunks - Divisions - Cords - Branches (Remember to drink cold beer)

30
Q

4 nerves that leave BP “early”

A

dorsal scapular n., long thoracic n., suprascapular n.,, n. to subclavius

31
Q

Dorsal scapular nerve innervates…

A

levator scapulae, rhomboid major & minor

32
Q

Long thoracic nerve innervates…

A

serratus anterior

33
Q

Suprascapular nerve innervates…

A

supraspinatus, infraspinatus

34
Q

5 branches of the posterior cord of the BP

A

1) axillary n.
2) radial n.
3) thoracodorsal n.
4) upper subscapular n.
5) lower subscapular n.

35
Q

Axillary n. innervates…

A

deltoid & teres minor

36
Q

radial n. innervates…

A

extensors of the upper limb

37
Q

thoracodorsal n. innervates…

A

latissimus dorsi

38
Q

upper subscapular n. innervates…

A

subscapularis

39
Q

lower subscapular n. innervates…

A

subscapularis & teres major

40
Q

what n. is found in the quadrangular space?

A

axillary n.

41
Q

3 branches of the lateral cord of the BP

A

1) lateral pectoral n.
2) musculocutaneous n.
3) lateral root of median n.

42
Q

lateral pectoral n. innervates…

A

pec major & minor

43
Q

musculocutaneous n. innervates…

A

biceps brachii, brachialis, coracobrachialis

44
Q

lateral root of median n. innervates…

A

anterior forearm, hand

45
Q

5 branches of the median cord of the BP

A

1) medial root of median n.
2) ulnar n.
3) medial pectoral n.
4&5) medial cutaneous n. of arm & forearm

46
Q

Biceps brachii origin, insertion, action, innervation

A

O: long head - supraglenoid tubercle of scapula
short head - coracoid process of scapula
I: radial tuberosity
A: supination of forearm, flexion at elbow
Innervation: musculocutaneous n.

47
Q

Coracobrachialis origin, insertion, action, innervation

A

O: coracoid process of scapula
I: middle of medial aspect of humerus
A: flexion at shoulder, adduction of humerus
Innervation: musculocutaneous n.

48
Q

Brachialis origin, insertion, action, innervation

A

O: anterior surface, lower half of humerus
I: coronoid process ulnar tuberosity
A: flexion at elbow
Innervation: musculocutaneous n.

49
Q

Triceps brachii origin, insertion, action, innervation

A

O: long head - infraglenoid tubercle of scapula
lateral head - posterior humerus, above radial groove
medial head - posterior humerus, elow radial groove
I: common tendon into olecranon process of ulna
A: extension of the forearm at the elbow,. long head contributes to the extension and adduction of humerus at shoulder joint.
Innervation: radial n.

50
Q

Muscuolocutaneous n. pathway

A

1) pierces coracobrachialis
2) reappears distally between biceps brachii & brachialis
3) ends as lateral cutaneous n. of forearm

51
Q

Posterior roots & rootlets carry…

A

afferent/sensory fibers

52
Q

Anterior roots & rootlets carry…

A

efferent/motor fibers

53
Q

3 layers of meninges

A

pia mater, arachnoid mater, dura mater

Anatomy Midterm (4 decks)

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