Brainscape's Knowledge GenomeTM

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


See full index

OU Human Structure > Posterior Triangle of the Neck, Axilla, and Brachial Plexus > Flashcards

Posterior Triangle of the Neck, Axilla, and Brachial Plexus Flashcards

1
Q

Divisions of the posterior cervical triangle

A

Occipital triangle
Supraclavicular
Divided by omohyoid

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

Borders of the Posterior Triangle of the Neck

A

SCM
Clavicle
Trapezius

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

SCM (O, I, N, B, F)

A 
O = Manubrium; Proximal Clavicle
I = Mastoid process; temporal bone 
N = Spinal Accessor 
B = Multiple
F = Individually, will tilt head toward shoulder on same side rotating head to turn face to opposite side; acting together, draw head forward
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Trapezius (O, I, N, B, F)

A 
O = Vertebral spines; Occipital bone
I = Spine adn acromion of scapula; distal clavicle
N = Spinal accessory 
B = Transverse cervical - Superficial branch
F = Assists in rotating the scapula during abduction of humerus above horizontal; upper fibers - elevate, middle fibers - adduct, lower fibers - depress scapula
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cervical Fascias

A

Enveloping layer of Deep Cervical Fascia
Pretracheal Fascia
Prevertebral Fascia
Carotis Sheath

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

Retropharyngeal space

A

Located between Pretracheal and Prevertebral Fascai

Infection here is really dangerous bc space goes all the way to the thoracic cavity

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

Scalene Muscles (I, F)

A 
I = Cervical Nerves
F = Elevate ribs 1 and 2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Between what scalenes does the brachial plexus pass?

A

Anterior and middle

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

Levator Scapulae (O, I, N, B, F)

A 
O = transverse processes of C1-C4
I = Superior angle of scapula; Medial border of scapula
N = Dorsal scapular, C3 and C4
B = Dorsal Scapular Artery 
F = Elevates Scapula
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Splenius Muscles (O, I, N, F)

A 
O = Lower ligamentum nuchae, spinous processes of cervical and thoracic vertebrae
I = Transverse processes (cervicis), mastoid process and superior nuchal line (capitis)
N = dorsal rami of middle and lower cervical spinal nerves
F = extend, rotate, and laterally flex the head
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Contents of the Posterior Triangle

A 
Cervical Plexus
Brachial Plexus (roots and trunks)
Branches of the Subclavian Artery 
Tributaries to the Jugulars
Posterior belly of omohyoid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cervical Branches (Cutaneous branches)

A 
Lesses Occipital (C2)
Greater Auricular (C2-C3)
Transverse Cervical (C2-C3)
Supraclavicular (C4)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Review Veins and Arteries

A

Slides 16-18

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

The Phrenic Nerve crosses anterior to what muscle in the posterior triangle of the neck

A

Anterior Scalene

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

Postaxial nerves

A

come from the posterior cord - axillary (shoulder muscles) and radial (arm and forearm)

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

Preaxial nerves

A

come from the lateral and medial cords
musculocutaneous - arm
median - forearm
ulnar - hand

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

Brachial plexus present in posterior triangle of the neck

A

Roots
Trunks
Dorsal Scapular N

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

Branches of Roots

A

Dorsal scapular

Long thoracic

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

Branches off Trunks

A

Suprascapular

Nerve to Subclavious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Branches of Cords

A 
Lateral Pectora - Lateral cord
Medial Pectoral - medial cord
Medial brachial cutaneous - medial cord
Medial antebrachial cutaneous - medial cord
Upper subscapular - posterior
Thoracodorsal - posterior
Lower supscapular - posterior
21
Q

Axilla

A

4 sides region - elongated
Transition from the posterior triangle of the neck to the upper limb
All nerves and blood vessels of the upper limb travel through here
Lots of fat

22
Q

Anterior Wall of Axilla

A

Pectoralis Major and Minor
Subclavius
Clavipectoral fascia

23
Q

Inlet of Axilla

A

Lateral margin of 1st rib
Clavicle
Superior margin of scapula

24
Q

Medial wall of Axilla

A

Upper thoracic wall

Serratus anterior

25
Q

Floor of Axilla

A

Skin of armpit

Laterally - open to arm

26
Q

Posterior wall of Axilla

A

Subscapularis
Teres major
Latissimus dorsi
long head of biceps brachii

27
Q

Lateral wall of axilla

A

Intertubercular sulcus

28
Q

Contents of Axilla

A

Axillary sheath
Cords of brachial plexus with branches supplying the walls
Axillary artery and the main branches to the walls
Deep veins of the upper limb

29
Q

Innervation of Pectoralis Major

A

Lateral and Medial Pectoral N

30
Q

Innervation of Pectoralis Minor

A

Medial Pectoral N

31
Q

Innervation of Subclavius

A

N. to Subclavius

32
Q

Serratus Anterior (F, I)

A

Hold scapula to thoracic wall
Innervated by Long Thoracic Nerve
If injured can lead to winging of scapula

33
Q

Innervation of infraspinatus

A

Suprascapular

34
Q

Innervation of Teres Minor (and Deltoid)

A

Axillary

35
Q

Innervation of Subscapularis

A

Upper and lower subscapular Nerves

36
Q

Innervation of Teres Major

A

Lower Subscapular

37
Q

Innervation of Latissimus Dorsi

A

Thoracodorsal

38
Q

Innervation of anterior wall of axilla

A

Medial and lateral cords

39
Q

Innervation of medial wall of axilla

A

long thoracic from roots of plexus

40
Q

Innervation of posterior wall of axilla

A

Branches from posterior cord

41
Q

Upper Plexus Injury

A

Excessive widening of angle between neck and shoulder
C5-C6
Waiter’s tip hand

42
Q

Lower Plexus injury

A

Excessive angle between trunk and upper limb
C8-T1
Claw hand deformity

43
Q

When does the subclavian artery become the axillary artery?

A

After crossing lateral border of 1st rib

44
Q

When does the axillary artery become the brachial artery?

A

After artery crosses the inferior border of teres major

45
Q

Review Arteries

A

Slides 47 and 48

46
Q

Where is the cephalic vein and where does it drain

A

Laterally

Drains to the axillary artery vein through the deltopectoral triangle

47
Q

Where is the basilic vein and where does it drain

A

Medially

Drains to the medial intermuscular septum to join the brachial veins

48
Q

Where do cephalic and basilic veins communicate

A

Median cubital vein

OU Human Structure (7 decks)

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