more shoulder/upper arm muscle practice (insertion, origin and function)

Question 1

Trapezius Insertion/Attachment sites?

Answer 1

attaches to the:
- clavicle
- acromion
- scapula spine

Question 2

Trapezius Origin sites?

Answer 2

Originates from:
- skull
- nuchal ligament
- spinous processes of C7-T12

Question 3

Trapezius actions/movements?

Answer 3

• abduction of the upper limb
• side bending
• rotation of the head
• elevating and depressing the shoulders
• internally rotating the arm

Question 4

What activities of daily living is the deltoid involved in?

Answer 4

• carrying shopping bags
• washing hair
• athletic activities

Question 5

what is the main movement the deltoid is involved in?

Answer 5

abduction of the Shoulder Joint

This helps lift the arm:
- front, side and backward

Question 6

Where does the Deltoid muscle insert/attach?

Answer 6

• fibres from all heads converge to insert into the Deltoid Tuberosity (rough part on the humerus bone)

Question 7

Name the three origin sites for each head of the deltoid muscle
(Anterior head, Lateral Head, Posterior head)

Answer 7

Anterior head: anterior surface of the clavicle

Lateral head: Acromion Process of Scapula

Posterior head: spine of the scapula

Question 8

Name the origin site for the Levator Scapulae muscle

Answer 8

Posterior tubercle of transverse process of cervical vertebrae 1 to 4

Question 9

Name the Insertion site of the Levator Scapulae muscle

Answer 9

The superior angle of the scapula

Question 10

what is the action of the Levator Scapulae?

Answer 10

• extending the neck
• laterally flexing the neck
• elevate the scapula

Question 11

where does the Rhomboid minor originate and insert?

Answer 11

Originates: C7 and T1 vertebra

Inserts: scapula’s medial border near the base of the spine of the scapula

Question 12

where does the Rhomboid major originate and insert?

Answer 12

Originates: spinous process of T2-T5 vertebra

Inserts: Medial border of the scapula

Question 13

What are the Rhomboids important for?

Answer 13

• important for movement of the upper extremity
• stabilisation of the shoulder through articulation with the trunk

Question 14

what movements do the Rhomboids enable at the scapula?

Answer 14

• retraction
• elevation
• rotation

Question 15

what type of basic movement/actions are the rhomboids involved in?

Answer 15

• pulling action
• throwing
• overhead arm movement