Match the List I with List II

List I Name of the muscle	List II Origin
A.	Leatores costarum	I.	T12 & L1 to L5
B.	Serratus posterior superior	II.	C7 & T1 to T11
C.	Serratus posterior Inferior	III.	C7 & T1 to T3
D.	Psoas	IV.	T11-T12 & L1 to L3

Choose the correct answer from the options given below:

Correct option is B

Explanation 1. A. Levatores costarum → II. C7 & T1 to T11:
· Originates from the transverse processes of C7 and T1 to T11. These small muscles elevate the ribs during inspiration.
2. B. Serratus posterior superior → III. C7 & T1 to T3:
· Originates from the spinous processes of C7 and T1 to T3 and functions to elevate the ribs during inspiration.
3. C. Serratus posterior inferior → IV. T11-T12 & L1 to L3:
· Originates from the spinous processes of T11-T12 and L1 to L3. It depresses the lower ribs, assisting in forced expiration.
4. D. Psoas → I. T12 & L1 to L5:
· Originates from the transverse processes and bodies of T12 and L1 to L5 vertebrae. It is a key muscle in hip flexion.
Correct Matching: · A-II: Levatores costarum → C7 & T1 to T11
· B-III: Serratus posterior superior → C7 & T1 to T3
· C-IV: Serratus posterior inferior → T11-T12 & L1 to L3
· D-I: Psoas → T12 & L1 to L5
Correct Answer: (b) A-II, B-III, C-IV, D-I Information Booster 1. Levatores Costarum: Elevates ribs during breathing.
2. Serratus Posterior Superior: Assists in rib elevation, crucial for inspiration.
3. Serratus Posterior Inferior: Depresses the ribs, aiding in forced expiration.
4. Psoas: Involved in hip flexion and stabilizing the lumbar spine.