The Bony Thorax
Anatomically the Thorax is the chest, and its bony underpinings are called the Bony Thorax or Thoracic Cage. It is composed if the Sternum and Ribs. The Bony Thorax forms a protective cage around the vital organs of the Thoracic Cavity and supports the sh
Sternum
The Sternum (Breastbone) forms the anterior midline of the Thorax. In appearance it vaguely resembles a Dagger-Knife. It is a long, flat bone that consists of 3 bones. The Manubrium, the Body, and the Xiphoid Process.
(The Bony Thorax) - (Sternum)
Manubrium
The Manubrium is the superior portion of the Sternum. Manubrium meaning "knife-handle" . It is alos shped like the knot in a necktie.
(The Bony Thorax) - (Sternum)
Clavicular Notches
The Clavicular Notches are located at the Top of Manubrium where clavical (collarbones) bones attach to Sternum.
(The Bony Thorax) - (Sternum)
Jugular Notch
The Jugular Notch is a groove that can easily be felt and is located in the center of the superior surface of the sternum and between clavicular notches. The Juglar Notch is generally in line with the disc between the 2nd and 3rd thoracic vertebrae. The p
Body of the Sternum
The Body is the midportion of the bone and forms the bulk of The Sternum. The sides of the Body are notched where it articulates with the costal cartilages of the 2nd to 7th Ribs.
(The Bony Thorax) - (Sternum)
Sternal Angle
The Sternal Angle is located at base of Manubrium. It is the junction where manubrium and body of sternum join. The Sternal Angle is at the level of the second rib and is a handy reference point from which all other ribs are counted.
(The Bony Thorax) - (
Xiphoid Process
The Xiphoid Process (Swordlike) forms the inferior narrow portion of the Sternum. It is the smallest of the three parts of the breastbone. The heart lies on the diaphrgm just deep to the Xiphoid joint.
(The Bony Thorax) - (Sternum)
Ribs
There aer 12 Pairs of Ribs originated from the Thoracic Vertebrae and form its flaring sides. The typical shape of a Rib is a bowed flat bone. All Ribs attach posteriorly to the Thoracic vertebrae (bodies and transverse processes) and curve inferiorly to
Shaft (Rib)
The Shaft is the long bone portion that makes of the bulk of the rib.
(The Bony Thorax) - ( Ribs)
Angle (Rib)
The Angle of the Rib is where the shaft angles sharply. It is between the Head of the Rib and the Shaft and next to the Turbercle of the Rib. (The Bony Thorax) - ( Ribs)
Turbercle (Rib)
The Turbercle of the Rib is knoblike area between the Rib Neck and the Angle of the Rib. The Tubercle attaches with the Costal Facet of Transverse Process of the same-numbered Thoracic vertebrae. (The Bony Thorax) - ( Ribs)
Neck (Rib)
The Neck of the Rib is the narrow, constricted portion of the Rib just beyond the Head. (The Bony Thorax) - ( Ribs)
Head (Rib)
The Head of the Rib is wedge-shaped. The head of the rib attaches to the Body of a Thoracic Vertebrae. It is the posterior end of the Rib. (The Bony Thorax) - ( Ribs)
Costal Groove (Rib)
The Costal Groove is groove or indentation on the inner face of the inferior border of the rib Shaft. (The Bony Thorax) - ( Ribs)
Rib Facts ( Know These)
Ribs are easily palpitated except for the 1st Rib, which is flattened and lies deep to the Clavicle.
Most Ribs attach to two vertebrae, with the head of the rib articulating with the vertebral body and tubercle of the rib attaches with the transverse proc
Hypophyseal Fossa
The Hypophyseal Fossa is "seat of the saddle" (Sella Turcica) part of the Sphenoid bone. It is the groove that is the deepest part of the body and it holds the Pituitary gland.
(Sphenoid Bone)
The Bony Thorax
Anatomically the Thorax is the chest, and its bony underpinings are called the Bony Thorax or Thoracic Cage. It is composed if the Sternum and Ribs. The Bony Thorax forms a protective cage around the vital organs of the Thoracic Cavity and supports the sh
Sternum
The Sternum (Breastbone) forms the anterior midline of the Thorax. In appearance it vaguely resembles a Dagger-Knife. It is a long, flat bone that consists of 3 bones. The Manubrium, the Body, and the Xiphoid Process.
(The Bony Thorax) - (Sternum)
Manubrium
The Manubrium is the superior portion of the Sternum. Manubrium meaning "knife-handle" . It is alos shped like the knot in a necktie.
(The Bony Thorax) - (Sternum)
Clavicular Notches
The Clavicular Notches are located at the Top of Manubrium where clavical (collarbones) bones attach to Sternum.
(The Bony Thorax) - (Sternum)
Jugular Notch
The Jugular Notch is a groove that can easily be felt and is located in the center of the superior surface of the sternum and between clavicular notches. The Juglar Notch is generally in line with the disc between the 2nd and 3rd thoracic vertebrae. The p
Body of the Sternum
The Body is the midportion of the bone and forms the bulk of The Sternum. The sides of the Body are notched where it articulates with the costal cartilages of the 2nd to 7th Ribs.
(The Bony Thorax) - (Sternum)
Sternal Angle
The Sternal Angle is located at base of Manubrium. It is the junction where manubrium and body of sternum join. The Sternal Angle is at the level of the second rib and is a handy reference point from which all other ribs are counted.
(The Bony Thorax) - (
Xiphoid Process
The Xiphoid Process (Swordlike) forms the inferior narrow portion of the Sternum. It is the smallest of the three parts of the breastbone. The heart lies on the diaphrgm just deep to the Xiphoid joint.
(The Bony Thorax) - (Sternum)
Ribs
There aer 12 Pairs of Ribs originated from the Thoracic Vertebrae and form its flaring sides. The typical shape of a Rib is a bowed flat bone. All Ribs attach posteriorly to the Thoracic vertebrae (bodies and transverse processes) and curve inferiorly to
Shaft (Rib)
The Shaft is the long bone portion that makes of the bulk of the rib.
(The Bony Thorax) - ( Ribs)
Angle (Rib)
The Angle of the Rib is where the shaft angles sharply. It is between the Head of the Rib and the Shaft and next to the Turbercle of the Rib. (The Bony Thorax) - ( Ribs)
Turbercle (Rib)
The Turbercle of the Rib is knoblike area between the Rib Neck and the Angle of the Rib. The Tubercle attaches with the Costal Facet of Transverse Process of the same-numbered Thoracic vertebrae. (The Bony Thorax) - ( Ribs)
Neck (Rib)
The Neck of the Rib is the narrow, constricted portion of the Rib just beyond the Head. (The Bony Thorax) - ( Ribs)
Head (Rib)
The Head of the Rib is wedge-shaped. The head of the rib attaches to the Body of a Thoracic Vertebrae. It is the posterior end of the Rib. (The Bony Thorax) - ( Ribs)
Costal Groove (Rib)
The Costal Groove is groove or indentation on the inner face of the inferior border of the rib Shaft. (The Bony Thorax) - ( Ribs)
Rib Facts ( Know These)
Ribs are easily palpitated except for the 1st Rib, which is flattened and lies deep to the Clavicle.
Most Ribs attach to two vertebrae, with the head of the rib articulating with the vertebral body and tubercle of the rib attaches with the transverse proc
Hypophyseal Fossa
The Hypophyseal Fossa is "seat of the saddle" (Sella Turcica) part of the Sphenoid bone. It is the groove that is the deepest part of the body and it holds the Pituitary gland.
(Sphenoid Bone)