Download Sphenoid Bone

AXIAL SKELETON
Bones of the Axial Skeleton
Figure 7.1
Frontal Bone
Figure 7.2a
Parietal Bones and Major Associated Sutures

Form most of the superior and lateral aspects of the
skull
Figure 7.3a
Occipital Bone and Its Major Markings
Figure 7.2b
Temporal Bones
Figure 7.5
Sphenoid Bone
Figure 7.6a
Sphenoid Bone
Figure 7.6b
Ethmoid Bone
Figure 7.7
Mandible and Its Markings
Figure 7.8a
Maxillary Bone
Figure 7.8b
Anterior Aspects of the Skull
Frontal bone
Parietal bone
Frontal squama
of frontal bone
Nasal bone
Sphenoid bone
(greater wing)
Temporal bone
Ethmoid bone
Lacrimal bone
Glabella
Frontonasal suture
Supraorbital foramen
(notch)
Supraorbital margin
Superior orbital
fissure
Optic canal
Inferior orbital
fissure
Zygomatic bone
Infraorbital foramen
Maxilla
Middle nasal concha
Perpendicular plate
Ethmoid
bone
Inferior nasal concha
Vomer bone
Mandible
Mental
foramen
(a)
Mandibular symphysis
Figure 7.2a
Posterior Aspects of the Skull
Sagittal suture
Parietal bone
Sutural
bone
Lambdoid
suture
Occipital bone
Superior nuchal line
External
occipital
protuberance
Occipitomastoid
suture
(b)
Mastoid
process
External
occipital
crest
Occipital
condyle
Inferior
nuchal
line
Figure 7.2b
External Lateral Aspects of the Skull
Coronal suture
Frontal bone
Sphenoid bone
(greater wing)
Parietal bone
Ethmoid bone
Temporal bone
Lacrimal bone
Lambdoid
suture
Lacrimal fossa
Squamous suture
Nasal bone
Occipital bone
Zygomatic process
Zygomatic bone
Occipitomastoid suture
Maxilla
External acoustic meatus
Mastoid process
Alveolar margins
Styloid process
Mandibular condyle
Mandible
Mental foramen
Mandibular notch
Mandibular ramus
(a)
Mandibular angle
Coronoid process
Figure 7.3a
Midsagittal Lateral Aspects of the Skull
Parietal bone
Coronal suture
Squamous
suture
Frontal bone
Temporal
bone
Sphenoid bone
(greater wing)
Frontal sinus
Crista galli
Lambdoid suture
Nasal bone
Sphenoid sinus
Ethmoid bone
(perpendicular plate)
Vomer bone
Incisive fossa
Occipital
bone
Occipitomastoid
suture
External occipital
protuberance
Maxilla
Alveolar margins
Internal acoustic
meatus
(b)
Sella turcica
of sphenoid
bone
Pterygoid
process of
sphenoid Mandibular
foramen
bone
Mandible
Palatine
bone Palatine
process of
maxilla
Figure 7.3b
Inferior Portion of the Skull
Maxilla
(palatine process)
Hard
palate
Palatine bone
(horizontal plate)
Zygomatic bone
Temporal bone
(zygomatic process)
Vomer
Maxilla
Sphenoid bone
(greater wing)
Foramen ovale
Foramen
lacerum
Carotid canal
Mandibular
fossa
External acoustic meatus
Styloid process
Mastoid process
Temporal bone
(petrous part)
Pharyngeal
tubercle of
basioccipital
Parietal bone
External occipital crest
(a)
Incisive fossa
Medial palatine suture
Infraorbital foramen
External occipital
protuberance
Stylomastoid
foramen
Jugular foramen
Occipital condyle
Inferior nuchal line
Superior nuchal line
Foramen magnum
Figure 7.4a
Inferior Portion of the Skull
Olfactory foramina
Frontal bone
Anterior cranial fossa
Cribriform plate
Crista galli
Sphenoid
Lesser wing
Greater wing
Ethmoid
bone
Optic canal
Anterior clinoid process
Foramen rotundum
Tuberculum sellae
Hypophyseal fossa
Sella
Dorsum sellae
turcica Posterior clinoid process
Foramen ovale
Foramen spinosum
Middle cranial
fossa
Temporal bone
(petrous part)
Foramen lacerum
Jugular foramen
Hypoglossal canal
Internal
acoustic meatus
Posterior
cranial fossa
Anterior
cranial
fossa
Parietal bone
Occipital bone
(b)
Middle
cranial
fossa
Foramen magnum
(c)
Posterior
cranial
fossa
Figure 7.4b
Nasal Cavity
Figure 7.10a
Nasal Cavity
Figure 7.10b
Vertebral Column
Figure 7.13
General Structure of Vertebrae
Figure 7.15
Cervical Vertebrae
Table 7.2.2
Cervical Vertebrae: The Atlas (C1)
Figure 7.16a, b
Cervical Vertebrae: The Axis (C2)
Figure 7.16c
Cervical Vertebrae: The Atlas (C2)
Figure 7.17a
Regional Characteristics of Vertebrae
Table 7.2.2
Thoracic Vertebrae
Figure 7.17b
Lumbar Vertebrae
Figure 7.17c
Sacrum

Sacrum

Consists of five fused vertebrae (S1-S5), which
shape the posterior wall of the pelvis

It articulates with L5 superiorly, and with the
auricular surfaces of the hip bones

Major markings include the sacral promontory,
transverse lines, alae, dorsal sacral foramina, sacral
canal, and sacral hiatus
Coccyx

Coccyx (Tailbone)

The coccyx is made up of four (in some cases three
to five) fused vertebrae that articulate superiorly
with the sacrum
Sacrum and Coccyx: Anterior View
Figure 7.18a
Sacrum and Coccyx: Posterior View
Figure 7.18b
Bony Thorax (Thoracic Cage)
Figure 7.19a