ESS 205 LAB UNIT 11 AND 12 MOST TESTED QUESTIONS AND ANSWERS GRADED A+ WITH RATIONALES

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ESS 205 LAB UNIT 11 AND 12 MOST TESTED QUESTIONS AND
ANSWERS GRADED A+ WITH RATIONALES
1. Which muscles primarily move the shoulder girdle?

A. Deltoid and rotator cuff
B. Trapezius, rhomboids, levator scapulae, pectoralis minor, serratus anterior
C. Biceps brachii and triceps brachii
D. Latissimus dorsi and teres major

✅Correct Answer: B

Rationale:
The shoulder girdle (scapula + clavicle) is moved by muscles that attach the scapula to the axial
skeleton.



2. Which movements occur at the shoulder girdle (scapulothoracic joint)?

A. Flexion and extension
B. Abduction and adduction
C. Internal and external rotation
D. Elevation/depression, protraction/retraction, upward/downward rotation

✅Correct Answer: D

Rationale:
These movements describe how the scapula moves on the thoracic wall.



3. Which muscles elevate the shoulder girdle?

A. Lower trapezius and serratus anterior
B. Rhomboids and pectoralis minor
C. Upper trapezius and levator scapulae
D. Middle trapezius only

✅Correct Answer: C

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4. Which muscles depress the shoulder girdle?

A. Upper trapezius
B. Levator scapulae
C. Pectoralis minor and lower trapezius
D. Rhomboid major

✅Correct Answer: C



5. Which muscles produce upward rotation of the scapula?

A. Rhomboids only
B. Levator scapulae
C. Upper trapezius, lower trapezius, serratus anterior
D. Pectoralis minor

✅Correct Answer: C



6. Which muscles cause downward rotation of the scapula?

A. Serratus anterior
B. Lower trapezius
C. Levator scapulae, pectoralis minor, rhomboid major and minor
D. Middle trapezius

✅Correct Answer: C



7. Which muscles protract the shoulder girdle?

A. Rhomboids
B. Middle trapezius
C. Pectoralis minor and serratus anterior
D. Upper trapezius

✅Correct Answer: C