What is frontal Squama?
The vertical or squamous part (squama frontalis) is a broad, flattened extension that forms the forehead. [ squamous part]
What is skull Squama?
The squamous part of temporal bone (squama) forms the anterior and upper part of the bone, located between the sphenoid, parietal and occipital bones, and is scale-like, thin, and translucent.
What is a frontal eminence?
The frontal eminence (tuber frontale) is a rounded elevation situated about 3 cm. These eminences vary in size in different individuals, are occasionally unsymmetrical, and are especially prominent in young skulls; the surface of the bone above them is smooth, and covered by the galea aponeurotica.
Should your forehead bone be smooth?
The frontalis muscle, which forms the frontal belly of the epicranius muscle, passes over the smooth squamous region of the frontal bone to attach the skin of the brow to the galea aponeurotica on top of the head. The frontal bone is classified as a flat bone due to its relatively thin and flat shape.
What is Squama?
: a scalelike or thin, flattened part or structure especially of an animal: such as. a : a small outgrowth of the base of a wing of a dipteran fly that covers the haltere. b : the squamous portion of a bone of the skull.
What is present on the external surface of the Squama of the frontal bone?
The external surface is convex and usually exhibits, in the lower part of the middle line, the remains of the frontal suture; in infancy this suture divides the frontal bone into two and later fuses. A condition where fusion has not taken place, may persist throughout life and is referred to as a metopic suture.
What does squamous bone mean?
2 : resembling a scale or plate in structure especially : of, relating to, or being either the thin anterior upper portion of the temporal bone, the vertical portion of the frontal bone forming the forehead, or the curved expanded portion of the occipital bone behind the foramen magnum.
Where is the temporal Squama?
Anatomical terms of bone The squamous part of temporal bone, or temporal squama, forms the front and upper part of the temporal bone, and is scale-like, thin, and translucent.
What causes forehead bossing?
Causes of Frontal Bossing A common cause of frontal bossing is acromegaly, which is a hormonal disorder caused when the pituitary gland releases too much growth hormone. This excess leads to the bones of the face, skull, jaw, hands, and feet being enlarged.
Can frontal bossing be fixed?
Can frontal bossing be corrected? There is no treatment for frontal bossing. While the bone malformation cannot be addressed, the underlying condition causing frontal bossing may be able to be treated.
What bone does the Frontalis lie superficial to?
It is in between the frontalis muscle that lies on the frontal bone and the occipitalis muscle that lies on the occipital bone. Occiptalis muscle, frontalis muscle, and epicranial aponeurosis are collectively known as occipitofrontalis muscle.
Where does the squamous part of the frontal bone begin?
External surface. Coronal suture where the squamous part of the frontal bone begins. The external surface is convex and usually exhibits, in the lower part of the middle line, the remains of the frontal suture; in infancy this suture divides the frontal bone into two and later fuses.
What is the dorsal aspect of the frontal bone?
Anterior aspect of frontal bone. Note the specific shape of the nasal part designed to simultaneously articulate with ethmoid, sphenoid, nasal and lacrimal bones. Dorsal aspect of the frontal bone. The bottom aspect of the frontal bone demonstrating an opening of the frontal sinus ( apertura sinus frontalis ).
How is the frontal bone like a cockle shell?
The frontal bone resembles a cockle-shell in form, and consists of two portions—a vertical portion, the squama, corresponding with the region of the forehead; and an orbital or horizontal portion, which enters into the formation of the roofs of the orbital and nasal cavities. Squama (squama frontalis).—Surfaces.—The external surface (Fig.
What is the anatomy of the frontal sinus?
Frontal sinus 1 Gross anatomy. The frontal sinus has two chambers, one on each side, and they are almost always asymmetrical and separated by a septum. 2 Arterial supply. 3 Venous drainage. 4 Lymphatic drainage. 5 Variant anatomy 6 Development.