Muscles of the Pectoral Girdle & Upper Limbs Part 1

Indicate numerically which muscle is the trapezius please.

• 2
• 3
• 1
• 4

True or False?
The trapezius originates from the ligamentum nuche and attaches to the spine of the scapula.

• True
• False

Which of the following statements are false regarding the trapezium?
1. The superior fibres are attached to the cervical vertebrae and insert onto the spine of the scapula. They assist in upward rotation of the scapula.
2. The middle fibres abbduct the scapula.
3.  The inferior fibres depress the scapula and downwardly rotate the scapula.

• 1, 2, & 3
• 2 & 3 
• 1 & 3
• 2 only

Which of the following nerves innervate the trapezium?

• dorsal scapular nerve
• accessory nerve
• thoracodorsal nerve
• medial nerve

Which of the following posterior muscles are innervated via the dorsal scapular nerve?
1. Trapezium
2. Rhomboid
3. Levator Scapulae

• 1, 2, & 3
• 2 & 3
• 1 only
• 1 & 3

Which of the following muscles elevate, adduct, & downwardly rotate the scapula?

• Rhomboid major
• Rhomboid minor
• Levator scapulae
• 2 of the above options

Which of the following muscles elevate & downwardly rotate the scapula?

• Rhomboid major
• Rhomboid minor
• Levator scapulae
• 2 of the above options

Indicate by label which muscles are the rhomboid major and minor.

• I & J
• E & F
• G
• A & I

Problems with this muscle or its innervation can cause the winging of the scapula, as it attaches the scapula tightly to the rib cage by holding onto the medial border of the scapula.
Hint*: This muscle is innervated by the long thoracic nerve.

• Pectoral minor
• Serratus Anterior
• Coracobrachialis
• Rhomboid minor

Which of the following anterior muscles of the pectoral girdle only influence the clavicle, more specifically, is the stabilizer of the clavicle?
Hint*: is innervated via the subclavian nerve.

• subclavius
• pectoral minor
• serratus anterior
• None of the above