Transversus abdominis muscle

This video tutorial focuses on the transversus abdominis muscle, part of the lateral abdominal muscles. It covers the muscle's origin, insertion, and innervation, highlighting its role in the tension system of the abdominal wall. The tutorial explains the structure of the rectus sheath and the function of abdominal muscles in stabilizing the vertebral column and aiding bodily functions. The video concludes with a call to explore more resources on Kenhub.

Which muscle is the focus of this video tutorial?

• Internal oblique

• External oblique

• Transversus abdominis

• Rectus abdominis

What nerves supply the innervation to the transversus abdominis?

• Femoral nerve and sciatic nerve

• Phrenic nerve and vagus nerve

• Brachial plexus and radial nerve

• 7th to 12th intercostal nerves and branches of the lumbar plexus

What is the anterior layer of the rectus sheath composed of above the arcuate line?

• Aponeuroses of the internal and external oblique muscles

• Aponeuroses of the transversus abdominis and external oblique muscles

• Aponeuroses of all three lateral abdominal muscles

• Aponeuroses of the internal oblique and transversus abdominis muscles

Which function is NOT associated with the abdominal muscles?

• Facilitating inhalation

• Supporting defecation and urination

• Increasing intra-abdominal pressure

• Stabilizing the vertebral column

What movement is caused by a unilateral contraction of the transversus abdominis?

• Extension of the trunk

• Flexion of the trunk

• Ipsilateral rotation

• Contralateral rotation