gray’s anatomy multimedial unit of dept. of anatomy ju · 2019-10-17 · gray’s anatomy ....
TRANSCRIPT
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MultimedialMultimedial Unit of Dept. of Anatomy JUUnit of Dept. of Anatomy JU MultimedialMultimedial Unit of Dept. of Anatomy JUUnit of Dept. of Anatomy JU
GRAY’S
Anatomy
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Lateral view of the skull Lateral view of the skull
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Lateral view of the cranial bones Lateral view of the cranial bones
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Bones of the neurocranium and viscerocranium Bones of the neurocranium and viscerocranium
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Bones of the neurocranium (gray) and viscerocranium (orange) Bones of the neurocranium (gray) and viscerocranium (orange)
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Bones of the desmocranium and chondrocranium Bones of the desmocranium and chondrocranium
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Ossification of the cranial bones Ossification of the cranial bones
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Anterior view of the skull Anterior view of the skull
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Cranial bones, anterior view Cranial bones, anterior view
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Paranasal sinuses: pneumatization lightens the bone Paranasal sinuses: pneumatization lightens the bone
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LeFort classification of midfacial fractures LeFort classification of midfacial fractures
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Posterior view of the skull Posterior view of the skull
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Posterior view of the cranial bones Posterior view of the cranial bones
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The neonatal skull The neonatal skull
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Age at which the principal sutures ossify Age at which the principal sutures ossify
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Exterior of the calvaria Exterior of the calvaria
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Interior of the calvaria Interior of the calvaria
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Exterior of the calvaria viewed from above Exterior of the calvaria viewed from above
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Coronal section through the vertex of the skull to show the relationships between the
superior sagittal sinus, meninges and arachnoid granulations.
Coronal section through the vertex of the skull to show the relationships between the
superior sagittal sinus, meninges and arachnoid granulations.
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The cerebral dura mater, its reflections and associated major venous sinuses. The cerebral dura mater, its reflections and associated major venous sinuses.
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The major venous sinuses at the base of the skull.
The sinuses coloured dark blue have been opened up.
The major venous sinuses at the base of the skull.
The sinuses coloured dark blue have been opened up.
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Sensitivity of the inner table to trauma Sensitivity of the inner table to trauma
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Diploic veins in the calvaria Diploic veins in the calvaria
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Emissary veins of the occiput Emissary veins of the occiput
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The basal aspect of the skull The basal aspect of the skull
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Bones of the base of the skull Bones of the base of the skull
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Relationship of the foramen lacerum to the carotid canal and internal carotid artery Relationship of the foramen lacerum to the carotid canal and internal carotid artery
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SKULL DEVELOPMENTSKULL DEVELOPMENT SKULL DEVELOPMENTSKULL DEVELOPMENT
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Newborn skull, showing tissue origins of the bones (based on combined mouse and human data). Newborn skull, showing tissue origins of the bones (based on combined mouse and human data).
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Sagittal section through the
cranial end of the developing axial
skeleton in an early human
embryo of approximately 10 mm,
showing the extent of the
notochord.
Sagittal section through the
cranial end of the developing axial
skeleton in an early human
embryo of approximately 10 mm,
showing the extent of the
notochord.
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Superior aspect of cranium
of human embryo at 40 mm.
Superior aspect of cranium
of human embryo at 40 mm.
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Lateral aspect of cranium
of human embryo at 40 mm.
Lateral aspect of cranium
of human embryo at 40 mm.
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Lateral aspect of cranium of human embryo at 80 mm. Lateral aspect of cranium of human embryo at 80 mm.
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Much of the postnatal growth of the skull is concerned with development of the
viscerocranium. This diagram shows that with the height of the cranial vault
expressed as similar in newborn and adult skulls (lines a↔b), the facial skeleton
increases particularly during childhood and puberty.
Much of the postnatal growth of the skull is concerned with development of the
viscerocranium. This diagram shows that with the height of the cranial vault
expressed as similar in newborn and adult skulls (lines a↔b), the facial skeleton
increases particularly during childhood and puberty.
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A. and B. Photographs of a boy with a long, wedge-shaped skull (scaphocephaly)
resulting from craniosynostosis – premature closure of the sagittal suture.
A. and B. Photographs of a boy with a long, wedge-shaped skull (scaphocephaly)
resulting from craniosynostosis – premature closure of the sagittal suture.
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Drawings illustrating skull anomalies.
A. Oxycephaly (turricephaly), showing the towerlike skull resulting from premature closure of the
coronal suture.
B. Plagiocephaly, illustrating an asymmetrical skull resulting from premature closure of the coronal
and lambdoid sutures on the left side.
Drawings illustrating skull anomalies.
A. Oxycephaly (turricephaly), showing the towerlike skull resulting from premature closure of the
coronal suture.
B. Plagiocephaly, illustrating an asymmetrical skull resulting from premature closure of the coronal
and lambdoid sutures on the left side.
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Cranial deformities due to the premature closure of cranial sutures Cranial deformities due to the premature closure of cranial sutures
a. Sagittal suture: scaphocephaly (long, narrow skull).
b. Coronal suture: oxycephaly (pointed skull).
c. Frontal suture: trigonocephaly (triangular skull).
d. Asymmetrical suture closure, usually involving the coronal suture: plagiocephaly (asymmetrical skull).
a. Sagittal suture: scaphocephaly (long, narrow skull).
b. Coronal suture: oxycephaly (pointed skull).
c. Frontal suture: trigonocephaly (triangular skull).
d. Asymmetrical suture closure, usually involving the coronal suture: plagiocephaly (asymmetrical skull).
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Hydrocephalus and microcephaly Hydrocephalus and microcephaly
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MesodermalMesodermal cellscells MesodermalMesodermal cellscells
mesenchyme – embryonic connective tissue mesenchyme – embryonic connective tissue
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Neural crest cellsNeural crest cells Neural crest cellsNeural crest cells
migrate into the pharyngeal arches
(bones and connective tissue of craniofacial structures)
migrate into the pharyngeal arches
(bones and connective tissue of craniofacial structures)
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Homeobox (Hox) genes regulate the migration and
subsequent differentiation pf the neural crest cells, which
are crucial for the complex patterning of the head and face.
Homeobox (Hox) genes regulate the migration and
subsequent differentiation pf the neural crest cells, which
are crucial for the complex patterning of the head and face.
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