Muscles Of The Appendicular Skeleton Lesson One

Front 1

Trapezius means what in Greek?

Back 1

tablelike

Front 2

Which muscle is known as the "coat hanger muscle"?

Back 2

Trapezius

Front 3

The Trapezius is to the neck and head what the X are to the back?

Back 3

Erector spinae muscles

Front 4

The trapezius can act as a X to itself:

Back 4

antagonist

Front 5

Trapezius was once called X because it resembles Y:

Back 5

"musculus cuccullaris"
monk's head

Front 6

What are the ORIGINS of the Trapezius?

Back 6

occiput: external occipital protuberance; superior nuchal lines
nuchal ligament
SP of C7-T12
supraspinous ligament of C7-T12

Front 7

What are the INSERTIONS of the Trapezius?

Back 7

clavicle: lateral 1/3
scapula: acromion process and spine of scapula

Front 8

Actions of Trapezius, bilateral and unilateral, name fibers:
on head/neck (3)
on scapula (4)

Back 8

BILATERAL contraction:
head/neck: extension (upper fibers)
scapula:
elevation (upper fibers)
upward rotation (upper fibers)
retraction (middle fibers)
depression (lower fibers)
UNILATERAL contraction:
neck: lateral flexion (upper fibers)
head: rotation (upper fibers)

Front 9

The upper and lower parts of the Trapezius converge on what bony landmark?

Back 9

spine of the scapula

Front 10

Levator Scapula lies between what two muscles (near head)?

Back 10

Splenius Capitis
Scalene Posterior

Front 11

The body often shifts its fascial structure from sol state to gel state so as to reinforce the actions of which muscle?

Back 11

Levator Scapula

Front 12

Which is the only neck muscle that moves the shoulder blade?

Back 12

Levator Scapula is the only neck muscle that moves the scapula. It can both elevate and downwardly rotate the scapula.

Front 13

Levator Scapula ACTION(s)=

Back 13

UNILATERAL:
scapula: elevation, downward rotation
neck: lateral flexion, rotation to same side
BILATERAL:
neck/head: extension

Front 14

Levator Scapula ORIGIN(s)=

Back 14

transverse processes of C1-C4
(=TP of Atlas, Axis, and C3-4)

Front 15

Levator Scapula INSERTION(s)=

Back 15

medial border of scapula: from superior angle down to root of the scapular spine

Front 16

What neck muscle helps to stabilize the scapula?

Back 16

In its gel state, the Levator Scapula is a "fixator" for the scapula, and will feel similar to crunches as it is flipped over the insertion.

Front 17

Rhomboid Major ORIGIN(s)=

Back 17

SP of T2-T5 (varies)

Front 18

Rhomboid Major INSERTION(s)=

Back 18

medial border of scapula from root of spine to inferior angle

Front 19

Rhomboid Minor ORIGIN(s)=

Back 19

SP of C4 (or C7) to T1 (varies)

Front 20

Rhomboid Minor INSERTION(s)=

Back 20

medial border of the scapula (upper part)

Front 21

Actions of the Rhomboids? (3)

Back 21

scapula: retraction
scapula: downward rotation
scapula: elevation

Front 22

Do the Rhomboids lie superficial or deep to the Trapezius?

Back 22

deep

Front 23

What is a common alias for the Rhomboids? Why?

Back 23

"Christmas tree" muscles because their fibers are obliquely arranged (slanted, similar to Christmas tree branches)

Front 24

What is a common nickname for the Serratus Anterior and Triceps Brachii together? Why?

Back 24

"Boxer's muscle" because the forward movement of the scapulae enables a boxer to throw a punch.

Front 25

What are the "boxer's muscles"?

Back 25

Triceps Brachii and Serratus Anterior

Front 26

The Serratus Anterior is an antagonist to what pair of muscles in the back?

Back 26

Rhomboid Major and Minor

Front 27

The Serratus Anterior interlaces with which muscles and where?

Back 27

External Obliques
on the lateral aspect of the trunk

Front 28

Full or partial paralysis of what muscle produces a "winged scapula"?

Back 28

Serratus Anterior

Front 29

With a "winged scapula" condition what movement is commonly limited?

Back 29

Elevation of humerus is limited to 90 degrees

Front 30

Serratus Anterior ORIGIN(s)=

Back 30

ribs 1-9 (lateral aspect to costal cartilages)

Front 31

Serratus Anterior INSERTION(s)=

Back 31

scapula: anterior medial border

Front 32

Along with the Scalenes, which muscle is often called the "neurovascular entrapper" because it can obstruct nerve and blood flow in the upper chest?

Back 32

The Pectoralis Minor is a potential neurovascular entrapper because it forms a bridge over the axillary artery and the distal portion of the brachial plexus.

Front 33

Actions of the Pectoralis Minor?

Back 33

scapula: depression
scapula: tilts anteriorly
scapula: abduction (downward rotation)
in forced expiration: elevates ribcage

Front 34

Pectoralis Minor INSERTION(s)=

Back 34

scapula: coracoid process

Front 35

Which muscles elevate the scapula?

Back 35

Trapezius (upper fibers)
Levator Scapulae

Front 36

Which muscles depress the scapula?

Back 36

Trapezius (lower fibers)
Serratus Anterior
Pectoralis Minor

Front 37

Which muscle helps to upwardly rotate the scapula so that the inferior angle slides laterally?

Back 37

Trapezius (upper and lower fibers)

Front 38

Which two sets of muscles help to downwardly rotate the scapula (inferior angle of scapula sliding medially)?

Back 38

Levator Scapula
Rhomboids

Front 39

When the inferior angle of the scapula slides laterally, does it produce upward or downward rotation of the scapula?

Back 39

upward

Front 40

When the inferior angle of the scapula slides toward the midline, does it produce upward or downward rotation of the scapula?

Back 40

downward

Front 41

When we talk about rotation of the scapula, what is the reference point or bony landmark?

Back 41

scapula: inferior angle

Front 42

Which two muscles help to protract or abduct the scapula?

Back 42

Serratus anterior
Pectoralis minor

Front 43

Which muscle(s) help to retract the scapula?

Back 43

Trapezius (middle fibers)
Rhomboids

Front 44

Protraction refers to movement toward the front or back?

Back 44

front or anterior

Front 45

Retraction refers to movement toward the back or front of the body?

Back 45

back or posterior