Question

select all that apply

choose all of the muscles that compress the abdominal wall.

transverse abdominis
pectoralis minor
trapezius
obliques

Explanation:

Identify the function of Transverse abdominis

The transverse abdominis is the deepest of the flat abdominal muscles. Its fibers run horizontally around the abdomen. Its primary action is to compress the abdominal contents, supporting abdominal viscera and increasing intra-abdominal pressure.

Evaluate Pectoralis minor

Using the Pectoralis Minor Function knowledge point

• Pectoralis minor is a thin, triangular muscle located in the upper chest, beneath the pectoralis major.
• It depresses and protracts the scapula.
• It does not compress the abdominal wall.

Evaluate Trapezius

Using the Trapezius Function knowledge point

• The trapezius is a large superficial back muscle.
• It stabilizes, elevates, depresses, retracts, and rotates the scapula.
• It does not compress the abdominal wall.

Identify the function of Obliques

The obliques (including the external oblique and internal oblique muscles) form the anterolateral abdominal wall. Along with flexing and rotating the vertebral column, bilateral contraction of these muscles compresses the abdominal wall and increases intra-abdominal pressure.

Select the correct options

Based on the anatomical functions:

• Transverse abdominis: Yes, compresses the abdominal wall.
• Pectoralis minor: No.
• Trapezius: No.
• Obliques: Yes, compress the abdominal wall.

Answer:

• Transverse abdominis (Correct answer)
• Pectoralis minor
• Trapezius
• Obliques (Correct answer)