The 5 bones that make up the skull base are the ethmoid, sphenoid, occipital, paired frontal, and paired temporal bones. The skull base can be subdivided into 3 regions: the anterior, middle, and posterior cranial fossae.
Where is anterior cranial fossa?
Base of the skull. Upper surface. (Anterior cranial fossa is the top of the three indentations.) The anterior cranial fossa is a depression in the floor of the cranial base which houses the projecting frontal lobes of the brain.
Which bones articulate with the sphenoid?
Articulations. The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.
Which bone forms part of the floor of the cranium?
The cranium is formed of one frontal bone, two parietal bones, one sphenoid, two temporal bones, one occipital bone, and one ethmoid. The frontal bone forms the anterior part of the cranium, including the superior portion of the orbits (eye sockets), the forehead, and the roof of the nasal cavity.
What is the bone located in the Anterosuperior of the skull?
(1 bone)Located on the Anterior, Superior portion of the skull, forms the forehead, some features are the Supraorbital foramina, Frontal sinus, & Coronal suture. (2 bones)Located on the Posterior, Superior portion of the skull on the left & right sides of the Sagittal suture.
How many bones are found in the upper arm?
Bones of the arm, wrist and hand: There are 64 bones in the upper extremity. They consist of 10 shoulder and arm, 16 wrist and 38 hand bones. The 10 shoulder and arm bones are the clavicle, scapula, humerus, radius, and ulna on each side.