Brainscape's Knowledge GenomeTM

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


See full index

Anatomy! Written 1 > Superficial Back > Flashcards

Superficial Back Flashcards

1
Q

Surface Anatomy

A 
External occipital protuberance
Spinous process of C7
T1
Spine of scapula
Sacrum
Iliac crest
Inferior angle of scapula
Latissimus dorsi, trees major, trapezius
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Skin Innervation

A

Dermatomes

  • area of skin innervated by fibers from a single spinal nerve or segment
  • dermatome maps used for sensory testing and surgical incisions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Superficial Fascia

A 
Subcutaneous tissue (immediately below the skin)
Found between the skin and deep fascia
Covers most of the body
Storage area for body fat
Not well organized
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Deep Fascia

A

Strong, dense, well organized layer of CT
Located deep to superficial fascia and contains no fat
Where muscle attaches to bone, deep fascia becomes continuous with periosteum
Helps form compartments in the body

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

Different layers of the deep fascia

A

Investing layer of the deep fascia - incests and covers deeper structures like muscles and neuromuscular bundles
Intermuscular Septa - separates muscles into groups
Retinaculum - thickening of deep fascia across tendons of muscles at joints

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

Superficial Back Muscles

A 
AKA axioappendicular muscles or Extrinsic back muscles
Attach upper limb to axial skeleton
Trapezius
Latissimus Dorsi
Levator Scapulae
Rhomboid Major and Minor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Upper Limb muscles are supplied by…

A

Ventral primary rami

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

Intermediate Back Muscles

A 
AKA Extrinsic back muscles
Serratus posterior superior
Serratus posterior inferior
Involved in act of respiration
innervated by ventral primary rami
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Deep Back Muscles

A

AKA Intrinsic Back Muscles
Primary movers of the back
Innervated by the dorsal primary rami

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

Trapezius Info

A

Provides direct attachment of pectoral girdle to axial skeleton
Flat triangular muscle
Helps suspend the upper limb from the trunk
Covers back of neck and upper half of trunk
Attaches the pectoral girdle to the skull and vertebral column
Muscle fibers are divided into 3 parts

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

Trapezius Origin

A

Occipital bone
Ligamentum Nuchae
Spinous Process of C7-T12

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

Trapezius Insertion

A

Clavicle (lateral 1/3)

Acromion and spine of scapula

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

Trapezius Nerve Supply

A

Cranial nerve XI (accessory) - motor innervation
C3, C4 - central primary rami - pain and proprioception
Nerve injury would result in drooping of scapula

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

Trapezius Blood Supply

A

Superficial branch of the transverse cervical artery

Located on deep surface of the muscle

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

Trapezius Action

A

Holds upper limb to trunk
Adducts (retract) scapula
Raises scapula
Depreses scapula
Rotates scapula so that inferior angle is moved laterally for abduction of upper limb above horizontal position
To test its strength - shoulder shrugged against resistance

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

Latissimus Dorsi Info

A

Very broad flat muscle
Covers inferior half of the back (T6 to iliac crest)
Attaches the upper limb to the trunk
Acts on the shoulder joint

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

Latissimus Dorsi Origin

A

Spinous process of lower six thoracic vertebrae
Thoracolumbar fascia
Iliac crest and lower 3 or 4 ribs

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

Latissimus Dorsi Insertion

A

Humerus (intertubular groove) between Teres major and Pectorals Major

19
Q

Latissimus Dorsi Nerve Supply

A 
Thoracodorsal nerve (C6, C7, C8 level of spinal cord) from brachial plexus
If injured unable to raise the trunk with the upper limbs during climbing
20
Q

Latissimus Dorsi Blood Supply

A

Thoracodorsal artery

21
Q

Latissimus Dorsi Action

A

Pulls arm posteriorly (extends arm) and rotates medially
Used in chopping wood or crawl stroke in swimming
It adducts, extends and medially rotates the humerus at the shoulder joint
Along with pectorals major, it is an adductor of the arm

22
Q

Triangle of Auscultation

A

Small triangular gap between muscles near the inferior angle of the scapula
Bounded by the trapezius, latissimus doors, and medial border of the scapula
Good place to listen for respiratory sounds because they will be less muffled

23
Q

Levator Scapulae Info

A

Strap like muscle located in the neck and upper part of the thorax
Upper part lies deep to the sternocleidomastoid and the inferior part lies deep to the trapezius muscle

24
Q

Levator Scapulae Origin

A

Transverse processes of the first three or four cervical vertebrae

25
Q

Levator Scapulae Insertion

A

Superior angle of scapula and along its upper medial border

26
Q

Levator Scapulae Blood Supply

A

Dorsal scapular artery (branch of axillary artery)

Deep ranch of transverse cervical artery

27
Q

Levator Scapulae Nerve Supply

A

Dorsal scapular nerve (C5) and 3rd and 4th cervical nerves

28
Q

Levator Scapulae Action

A

Elevates scapula

Rotates scapula to move the gleaned cavity and shoulder joint inferiorly

29
Q

Rhomboid Major and Minor Info

A

One sheet of muscle, lies deep to trapezius
Upper part is called rhomboid minor
Lower, bigger part is rhomboid major

30
Q

Rhomboid Major and Minor Origin

A

Spines of lower cervical (C7) and upper thoracic (T1-T5) vertebrae

31
Q

Rhomboid Major and Minor Insertion

A

Medial border of scapula

32
Q

Rhomboid Major and Minor Blood Supply

A

Dorsal scapular artery

33
Q

Rhomboid Major and Minor Nerve Supply

A

Dorsal scapular nerve (ventral ramus of C5) and some fibers from C4
Injury to scapular nerve results in inability to adduct the scapula

34
Q

Rhomboid Major and Minor Action

A

Adduct scapula

Rotate scapular so the gleaned cavity moves inferiorly

35
Q

Serratus Posterior Superior Info

A

Located deep to rhomboid muscles

36
Q

Serratus Posterior Superior Origin

A

Ligamentum nuchae and spines of C7 to T3 vertebrae

37
Q

Serratus Posterior Superior Insertion

A

2nd to 4th ribs

38
Q

Serratus Posterior Superior Nerve Supply

A

First three thoracic spinal nerves

39
Q

Serratus Posterior Superior Action

A

Elevated ribs

40
Q

Serratus Posterior Inferior Origin

A

T11 to L2 of vertebral spines

41
Q

Serratus Posterior Inferior Insertion

A

Lower four ribs

42
Q

Serrratus Posterior Inferior Action

A

Aids in respiration by holding ribs steady when diaphragm moves up

43
Q

Serratus Posterior Inferior Nerve Supply

A

Last four thoracic nerves

Anatomy! Written 1 (10 decks)

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