Squamous part

Squamous part refers to a specific section of certain bones in the human body, particularly in the skull. The term "squamous" is derived from the Latin word "squama," meaning "scale," which reflects the scale-like appearance of this part of the bone.

Squamous Part of the Temporal Bone

The temporal bone is a complex structure located at the sides and base of the skull. It is divided into several parts, one of which is the squamous part. The squamous part of the temporal bone is the flat, thin, and broad section that forms the anterior and upper portion of the temporal bone. It articulates with the parietal bone at the squamosal suture and with the sphenoid bone at the sphenosquamosal suture.

Anatomy

The squamous part of the temporal bone is characterized by its thin, plate-like structure. It provides attachment points for several muscles, including the temporalis muscle, which is involved in mastication (chewing). The external surface of the squamous part is smooth and convex, while the internal surface is concave and houses the middle cranial fossa.

Squamous Part of the Occipital Bone

The occipital bone is another bone in the skull that has a squamous part. The squamous part of the occipital bone forms the posterior portion of the skull and contributes to the cranial cavity that houses the brain.

Anatomy

The squamous part of the occipital bone is broad and curved, providing attachment points for several muscles and ligaments, including the nuchal ligament and the trapezius muscle. It also features the external occipital protuberance, a prominent bony projection that serves as an attachment point for the nuchal ligament.

Clinical Significance

The squamous parts of the temporal and occipital bones are important in clinical anatomy and surgery. Fractures in these areas can lead to significant complications, including damage to the middle meningeal artery in the case of the temporal bone, which can result in an epidural hematoma.

Related Pages

• Temporal bone
• Occipital bone
• Parietal bone
• Sphenoid bone
• Squamosal suture
• Middle cranial fossa
• External occipital protuberance
• Nuchal ligament
• Trapezius muscle
• Epidural hematoma