Intercostal v a n

The video tutorial provides a comprehensive overview of the intercostal structures within the thoracic cavity, including veins, arteries, and nerves. It explains the topography, origin, course, and anastomosis of intercostal veins and arteries, as well as the motor and sensory distribution of intercostal nerves. The tutorial also covers the azygos system of veins and the internal thoracic vein, highlighting their roles in blood drainage. Additionally, it describes the segmental supply of intercostal arteries and the innervation provided by intercostal nerves.

What structures are found within the intercostal spaces?

• Only muscles

• Veins, arteries, and nerves

• Bones and cartilage

• Lymph nodes

What is the significance of the costal groove?

• It supports the diaphragm

• It connects the ribs to the sternum

• It houses the intercostal VAN

• It is a site for muscle attachment

Which system of veins is responsible for draining some intercostal veins to the back of the thorax?

• Azygos system

• Pulmonary system

• Portal system

• Coronary system

What is the role of the accessory hemiazygos vein?

• Connects to the pulmonary veins

• Drains the right side intercostal veins

• Drains the upper left intercostal veins

• Supplies blood to the heart

What is the primary drainage point for the internal thoracic vein?

• Brachiocephalic vein

• Coronary sinus

• Pulmonary vein

• Inferior vena cava

Which vein drains the anterior intercostal veins?

• Superior vena cava

• Inferior vena cava

• Internal thoracic vein

• Azygos vein

From where do the posterior intercostal arteries arise?

• Coronary artery

• Aorta

• Subclavian artery

• Pulmonary artery

What is the origin of the anterior intercostal arteries?

• Coronary artery

• Pulmonary artery

• Internal thoracic artery

• Aorta

What is the function of intercostal nerves?

• Supply blood to the heart

• Provide motor and sensory innervation

• Drain lymph from the thorax

• Support the rib cage

What is the term for the nerve below the T12 rib?

• Lumbar nerve

• Intercostal nerve

• Subcostal nerve

• Thoracic nerve