Anatomy and Structure of the Human Rib Cage Quiz

The rib cage aids in breathing by protecting the lungs and assisting in the expansion and contraction of the thoracic cavity.

The human rib cage typically consists of 12 pairs of ribs, which protect the internal organs and assist in breathing.

The rib cage protects internal organs by forming a sturdy, bony enclosure that acts as a physical barrier against external forces and trauma.

The last two pairs of ribs are commonly referred to as floating ribs because they do not have a direct anterior attachment to the sternum or costal cartilage.

The vertebral column forms the posterior border of the thoracic cage, providing structural support and protection to the spinal cord.

Floating ribs, also known as vertebral ribs, are ribs that do not attach to the sternum directly and are not connected to other ribs by cartilage.

True ribs, also known as vertebrosternal ribs, are directly attached to the sternum via costal cartilage.

The rib articulates with the vertebral column at the costovertebral joint, allowing for movement during breathing.

The diaphragm is a dome-shaped muscle that separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity, containing digestive organs.

Elevation refers to the upward movement of the ribs during inhalation, which expands the thoracic cavity and allows for air to enter the lungs.

The middle six pairs of ribs are considered typical ribs as they directly attach to the sternum via costal cartilage.

The diaphragm is the primary muscle responsible for the expansion and contraction of the rib cage during breathing, aiding in the inhalation and exhalation process.

The last two pairs of ribs, known as floating ribs, do not connect to the sternum directly and are not attached to costal cartilage.

False ribs, also known as vertebrochondral ribs, have costal cartilage that connects to the sternum indirectly or not at all.

The tubercle of the rib articulates with the transverse processes of the thoracic vertebrae, providing stability and facilitating movement.

The body of the rib provides attachment points for muscles and ligaments, contributing to the stability and movement of the rib cage.

The costal angle, also known as the subcostal angle or intercostal angle, is the depression or dip between adjacent ribs, allowing for flexibility and movement.

The costotransverse joint is where the tubercle of the rib articulates with the transverse process of the thoracic vertebra, allowing for movement and stability.