3rd Thoracic Vertebra Level

This tutorial explores the cross section at the level of the third thoracic vertebra, focusing on the muscles, bones, vessels, and organs visible at this level. It explains the axial plane's significance in radiology, particularly in CT and MRI imaging. The tutorial identifies key structures at the T3 level, including the lungs, trachea, and esophagus, and discusses major vessels and veins like the aortic arch and brachiocephalic trunk. It also examines the bones and muscles of the thoracic wall, such as the sternum, scapula, and pectoralis muscles.

What is the main focus of the tutorial?

• The skeletal system

• The anatomy of the human brain

• The digestive system

• The cross section at the level of the third thoracic vertebra

Which plane divides the body into superior and inferior parts?

• Sagittal plane

• Frontal plane

• Axial plane

• Coronal plane

In radiology, how are cross-sectional images typically viewed?

• As if the patient is standing

• As if the patient is lying on their stomach

• As if the patient is lying on their back

• As if the patient is sitting

Which structure is visible at the level of the intervertebral disc between the 4th and 5th thoracic vertebrae?

• Esophagus

• Trachea

• Aorta

• Liver

What is the function of the trachea?

• Digestive

• Respiratory

• Circulatory

• Nervous

Which artery stems directly from the aortic arch and is located to the left of the trachea?

• Right subclavian artery

• Left subclavian artery

• Right common carotid artery

• Left pulmonary artery

What is the name of the vein that forms the superior vena cava?

• Both left and right brachiocephalic veins

• Right brachiocephalic vein

• Left brachiocephalic vein

• Inferior vena cava

Which bone is located anteriorly in the thoracic wall?

• Manubrium

• Scapula

• Clavicle

• Humerus

Which muscle is the most superficial on the anterior surface of the body?

• Deltoid

• Pectoralis major

• Trapezius

• Rhomboid major

Which muscle lies inferior to the spine of the scapula?

• Pectoralis minor

• Teres major

• Subscapularis

• Infraspinatus