Cranial Sutures
what is the coronal suture that splits the skull into right and left parts?
saggital suture
Which foramen is located in the sphenoid bone and transmits the optic nerve?
The optic canal (optic foramen)
Which artery is the primary blood supply to the brain?
The internal carotid artery
what are the 5 layers of the scalp?
S= Skin
C= connective tissue
A= aponeurosis
L= loose connective tissue
P= periosteum
Which bone forms the prominence of the cheek?
The zygomatic bone
Which suture is located between the parietal and occipital bones?
The lambdoid suture
What is the foramen in the temporal bone that allows the passage of the internal jugular vein and cranial nerves IX, X, and XI?
Jugular Foramen
What is the main artery that supplies blood to the face?
Facial artery
What structure separates the left and right cerebral hemispheres within the cranial cavity?
the falx cerebri
how many bones make up the adult skull
22 bones
what are the spaces on a babies skull that are important to allow overlapping of the skull bone during delivery called?
Posterior Fontanelle
Anterior Fontanelle
through which foramen does the maxillary branch of the trigeminal nerve (CN V2) exit the skull?
Foramen Rotundum
Which artery supplies blood to the scalp and deep facial structures and originates from the external carotid artery?
Superficial temporal artery
What dural fold supports the cerebellum and separates it from the cerebrum?
The Tentorium Cerebelli
Which cranial bone is actually made of two separate bones that fuse in early childhood?
the frontal bone (it fuses along the metopic suture)
what is the anatomical landmark on the side of the skull where the frontal, parietal, temporal, and sphenoid bones meet?
Pterion
What is the name of the foramen that allows the passage of the middle meningeal artery?
Foramen Spinosum
Which nerve exits the skull via the foramen ovale and provides motor innervation to the muscles of mastication?
The Mandibular Nerve (V3), a branch of the trigeminal nerve
What is the name of the small bony structure that houses the pituitary gland within the cranial cavity?
the stella turcica
Which cranial nerve is the only one to emerge from the dorsal aspect of the brainstem and then pass through the superior orbital fissure?
The Trochlear Nerve (CN IV)
which suture in the skull can sometimes remain unfused into adulthood and is often mistaken for a fracture in radiographic images?
the metopic suture
What is the function of the foramen ovale, and which key structures pass through it?
The Foramen Ovale transmits the mandibular branch of the trigeminal nerve (V3), accessory meningeal artery, and lesser petrosal nerve. It plays a role in sensory and motor innervation to parts of the face and jaw
What artery supplies the teeth and gums of the lower jaw?
the inferior alveolar artery
what small dural fold covers the pituitary fossa, and protects the pituitary gland?
diaphragma sellae
Which cranial nerve has the longest intracranial course and is most susceptible to injury within the cavernous sinus?
the abducens nerve (CN6)