1. Axioclavicular & Axioscapular muscle group

Question 1

Muscles that move/stabilise the pectoral girdle

Answer 1

• position the clavicle & scapula
• will result in movement o fthe SCJ & ACJ
• often work in teams

Question 2

Axioclavicular

Answer 2

1. (Sternocleidomastoid)
2. Upper trapezius
3. (Subclavius)

Question 3

Axioscapular

Answer 3

1. Middle trapezius
2. Lower trapezius
3. Levator scapulae
4. Rhomboid minor
5. Rhomboid major
6. Serratus anterior
7. Pectoralis minor

Question 4

Muscle work in teams - force couples

Answer 4

Equal & opposite forces acting on 2 different points of a rigid body

Question 5

scap upward rotation force couple

Answer 5

Adduction & abduction cancel each other

* trapezius and serratus anterior

Question 6

scap downward rotation force couple

Answer 6

Protraction (pec minor) & retraction (levator scapulae, rhomboids) cancel each other
Pectoralis Minor
Rhomboids
Levator Scapula

Question 7

Sternocleidomastoid

Answer 7

Proximal Attachment: manubrium and mid clavicle
Distal Attachment: mastoid process and lateral superior nuchal line
innervation: accessory nerve - CN 11
primary action: moves head and neck

Question 8

TRAPS UPPER

Answer 8

Proximal Attachment: medial superior nuchal line, external occipital protuberence
Distal Attachment: lateral clavicle
innervation: accesory nerve - CN 11
primary action: clav. elevation, scap elev., add, up. rot

Question 9

traps middle

Answer 9

Proximal Attachment:C7-T12 spinous processes
Distal Attachment: acromion process and spine of scap
innervation: accesory nerve, CN 11
primary action: scap. retraction/add

Question 10

traps lower

Answer 10

Proximal Attachment: c7-t12 spinous processes
Distal Attachment: medial spine of scap
innervation:accesory nerve, CN 11
primary action: scap depression and up. rotation

Question 11

subclavius

Answer 11

Proximal Attachment: 1st rib
Distal Attachment: inferior medial 1/3 clavicle
innervation: nerve to subclavius
primary action: pulls clav. medially to stabilise SC joint, clav depress.

Question 12

levator scap

Answer 12

Proximal Attachment: c1-4 t.processes
Distal Attachment: superior med. border of scap above medial spine
innervation: c3,4 ventral rami + dorsal scap nerve C5
primary action: scap elv, add, dwn rot.

Question 13

rhomboid major

Answer 13

Proximal Attachment: t2 - 5 s. processes
Distal Attachment: medial bord. of scap below spin of scap
innervation: dorsal scap N c5
primary action: scap elv, add, dwn rot.

Question 14

rhomboid minor

Answer 14

Proximal Attachment: tc7 - t11
Distal Attachment: medial bord. of scap medial spin of scap
innervation: dorsal scap N c5
primary action: scap elv, add, dwn rot.

Question 15

serratus anterior

Answer 15

Proximal Attachment: anterolateral ribs 1-10
Distal Attachment: medial, ventral scap border
innervation: long thoracic N C5,6,7
primary action:scap protract/abd, up. rot.

Question 16

pec minor

Answer 16

Proximal Attachment: anterior ribs 3-5
Distal Attachment: coracoid process
innervation: medial and lat. pectorial nerves
primary action:scap anterior tilt
- scap abd/protraction, scap depress.

Question 17

scap medial winging

Answer 17

scap is pushed into adduction and wings medially as on pushes fwd against a wall
- scapulohumeral joint moves into internal rotation and anterior tilty with the medial border and inferior angle protudid posteriorly from the thorax

Question 18

causes of scap med. winging

Answer 18

weak serratus anterior

nerve dysfunction of long thoracic nerve

Question 19

function of serratus ant. during weightpbering through upper limb eg pushups

Answer 19

stabilises scap, contracts isometrically

Question 20

function of serratus an whilst raising weight overhead

Answer 20

up. rotation

Question 21

force coouple btwn s.a and rhomboids

Answer 21

SA: up rot. and protract. cancels R’s down rot. and retraction
therefore stabilises scap

Question 22

force couple btwn pec minor and lower trap

Answer 22

depression due to initial depression of pes minor.