Intercostal nerves

The video tutorial explains the anatomy and function of intercostal nerves, highlighting their motor and sensory distribution. It covers the thoracic wall's anatomy, the pathway and naming of intercostal nerves, and their clinical relevance. The tutorial also discusses segmental innervation and provides a concise summary of intercostal nerve features.

What is the primary function of intercostal nerves in the thoracic wall?

• To supply blood to the thoracic muscles

• To provide motor innervation to intercostal muscles and sensory innervation to the skin and pleura

• To connect the thoracic vertebrae to the sternum

• To regulate the temperature of the thoracic cavity

Which muscle layer is located deepest in the thoracic wall?

• Innermost intercostal muscle

• Internal intercostal muscle

• Ceratus anterior muscle

• External intercostal muscle

What is the role of the lateral cutaneous nerve?

• To regulate blood flow in the thoracic cavity

• To connect the spinal cord to the brain

• To provide sensory innervation to the lateral portion of the body wall

• To supply motor innervation to the intercostal muscles

At which point does the ventral Ramis change its name to an intercostal nerve?

• When it enters the spinal cord

• When it exits the thoracic cavity

• When it reaches the sternum

• When it passes between the internal and innermost intercostal muscles

What is the name of the nerve below the bottom rib?

• Lateral cutaneous nerve

• Intercostal nerve

• Subcostal nerve

• Anterior cutaneous nerve