Musculi intercostales

The video tutorial explains the anatomy and function of intercostal muscles, which are located between the ribs and divided into three subgroups: external, internal, and innermost. It details the course and origin of these muscles, their role in rib movement, and the significance of the intercostal space, which houses arteries, veins, and nerves. The tutorial also highlights the importance of these structures in medical procedures like pleural puncture.

Which layer do the external intercostal muscles form?

• Innermost layer

• Middle layer

• Outermost layer

• None of the above

What is the primary function of the internal intercostal muscles?

• To assist in arm movement

• To stabilize the spine

• To lift the ribs

• To lower the ribs

Where do the intercostal arteries and veins primarily run?

• Above the ribs

• Within the intercostal space

• Outside the rib cage

• Inside the lungs

Why is it important to puncture at the top of the rib during a pleural puncture?

• To prevent rib fractures

• To avoid damaging the intercostal nerves

• To ensure maximum air intake

• To increase blood flow

What role do the intercostal muscles play in breathing?

• They regulate heart rate

• They control lung expansion

• They assist in rib lifting and lowering

• They stabilize the diaphragm