The sphenoid bone is the most complex bone of the human body.Because of its shape, it is also known as the "wasp bone". The sphenoid bone forms the central skull base and viewed anteriorly resembles a bird with its wings unfurled. The sphenoid bone is considered the keystone of the cranium because it forms a central wedge that articulates with every other cranial bone.
The superior surface features: ethmoidal spine: prominent spine that articulates with the cribriform plate and grooved on either side by olfactory lobes of brain This bone helps form the base of the cranium, the sides … Its name derives from the Greek 'sphenoeides' which means wedge-shaped. The body has superior, inferior, anterior, posterior, and lateral surfaces. 3.1 ).At the ventral junction of the body and wings the paired pterygoid processes arise inferiorly, resembling the extended limbs of a bird. Sphenoid bone anatomy. It consists of a central part and two wing-like structures that extend sideways toward each side of the skull. The soft tissue structures such are the cranial nerves and parts of the brain are associated with this bone and have intense relations to it. The sphenoid bone is wedged between several other bones in the front of the cranium. The sphenoid bone forms the central skull base and viewed anteriorly resembles a bird with its wings unfurled. The sphenoid bone is situated at the base of the skull in front of the temporals and basilar part of the occipital. It is a compound bone with a median body and paired lateral greater and lesser wings ( Fig. Normal Anatomy . The sphenoid bone is one of the eight bones that make up the cranium – the superior aspect of the skull that encloses and protects the brain.. Its name is derived from the Greek ‘sphenoeides’, to mean wedge-shaped. It is a compound bone with a median body and paired lateral greater and lesser wings ( Fig. The sphenoid sinus is one of the four paired paranasal sinuses that is contained within the body of the sphenoid bone.The sphenoid sinuses vary in size and shape, and owing to the lateral displacement of the intervening septum, which may insert on the carotid canal, they are rarely symmetrical.They cannot be palpated during an extraoral examination. The sphenoid bone, also known as Os sphenoidale, is a cranial bone, shaped like a butterfly or a wasp, which occupies most of the middle part of the skull’s base, making up … 5a. The sphenoid is just one of the twenty-two bones that form the skull and essentially, helps to connect the neurocranium to the facial skeleton. It somewhat resembles a bat with its wings extended, and is divided into a median portion or body, two great and two small wings extending outward from the sides of the body, and two pterygoid processes which project from it below. It is a single bone in the midline of the cranial cavity situated posterior to the frontal bone but anterior to the occipital. The sphenoid bone spans the width of the cranial floor and has been said to resemble a bat with its wings spread. Normal Anatomy . 3.1 ).At the ventral junction of the body and wings the paired pterygoid processes arise inferiorly, resembling the extended limbs of a bird. It makes up most of the middle part of the base of the skull and contributes to the floor of the middle cranial fossa of the skull.. The sphenoid bone spans the width of the cranial floor and has been said to resemble a bat with its wings spread. The sphenoid bone is an unpaired bone of the neurocranium.It is situated in the middle of the skull towards the front, in front of the basilar part of the occipital bone.The sphenoid bone is one of the seven bones that articulate to form the orbit.Its shape somewhat resembles that of a … Gross anatomy. In this article, we shall look at the anatomy of the sphenoid bone – its location, structure, and clinical significance. The sphenoid bone lies at the base of your skull, and in this bone is a small, cup-shaped depression called the sella turcica (“Turkish saddle”). The sphenoid bone is a large, complex, unpaired bone forming the central parts of the anterior and central skull base. 5. Sphenoid bone anatomy. The body of the sphenoid bone is the midline cubical portion of the sphenoid bone, hollowed by the sphenoid air sinuses.. This is an online quiz called Sphenoid Bone There is a printable worksheet available for download here so you can take the quiz with pen and paper. The sphenoid bone is considered the keystone of the cranium because it forms a central wedge that articulates with every other cranial bone.
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