Rhombencephalon
Ashley Davidoff MD
The Common Vein Copyright 2010
Definition
The hindbrain or rhombencephalon is that part of the brain that lies between the midbrain and the spimnal cord and consists of the pons, medulla, and cerebellum.
Embryologically it is divided into the metencephalon (pons and cerebellum) and the myelencephalon (medulla).
 The Hindbrain (rhombencephalon) in Context |
|
The basic and simplest classification of the brain into forebrain midbrain and hindbrain is shown in this diagram and advanced to a more complex tree using the embryological and evolutionary terminologies. The hindbrain is shown in the right column and is colored in dark red. The forebrain consists of the cerebrum also called the prosencephalon, which contains the more advanced form of the brain and the thalamic structures which contain more basic structures. The cerebrum (telencephalon) itself consists of two cerebral hemispheres and paired basal ganglial structures. Each cerebral hemisphere will have gray and white matter distributed in the frontal parietal temporal and occipital lobe, with the basal ganglia being part of the gray matter deep in the cerebral hemispheres. The most important thalamic structures arising from the diencephalons include the thalamus itself and the hypothalamus. The midbrain (mesencepaholon) consists of the tectum tegmentum and cerebral peduncles. The hindbrain has two major branch points based on the evolutionary development classification. The pons and cerebellum(part of the metencephalon) are grouped and the medulla (part of the myelencephalon) s the second branch. Courtesy Ashley Davidoff MD Copyright 2010 All rights reserved 97686.8s |
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Concepts Major Parts of the Brain Hindbrain in Context |
|
This artistic rendition of the brain reflects the vectors of the major parts of the brain with the stick diagram overlaid on a sagittal external view of the brain. In the stick diagram, the forebrain has now been divided into the frontal lobe (bright green), parietal lobe (light mauve) occipital lobe (purple) and temporal lobe (red). The midbrain is represented in orange, and the hind brain consists of the pons (pink) medulla (salmon) and the cerebellum (maroon) Courtesy Ashley Davidoff copyright 2010 all rights reserved 83029e04.83s |
Conceptual Framework
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Conceptual Framework of the Hindbrain |
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The hindbrain conceptually consists of 3 ovoids The pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior. Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b01.8s |
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The Concept In Vivo |
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The 3 ovoids are situated in the posterior cranial fossa the pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior. Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b.8s |
Gross Anatomy
 Hindbrain
Relation to Midbrain and Forebrain Sagittal Section |
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The midsagittal section view of brain reveals the distinctive shape position and character of the midline structures of the brain. The distinction between the character of the cerebral cortex which has a creamy color and the white matter exemplified by the corpus callosum (c) and septum pellucidum (sp) which are white, and the midbrain (mb) pons (p) and medulla (m) which are off white as opposed to the color of the cerebellum (c) which is light salmon pink is well demonstrated. The relative sizes of the forebrain, midbrain and hindbrain and their components are well appreciated in this section. Image Courtesy of Thomas W.Smith, MD; Department of Pathology, University of Massachusetts Medical School. 97805b02 |
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Hindbrain
Relation to Midbrain and Forebrain
Sagittal Section
The midsagittal section view of brain reveals the distinctive shape position and character of the midline structures of the brain. The distinction between the character of the cerebral cortex which has a creamy color and the white matter exemplified by the corpus callosum (c) and septum pellucidum (sp) which are white, and the midbrain (mb) pons (p) and medulla (m) which are off white as opposed to the color of the cerebellum (c) which is light salmon pink is well demonstrated. The relative sizes of the forebrain, midbrain and hindbrain and their components are well appreciated in this section.
Image Courtesy of Thomas W.Smith, MD; Department of Pathology, University of Massachusetts Medical School. 97805b02
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Hindbrain
Relation to Midbrain and Forebrain
Sagittal Section
The midsagittal section view of brain reveals the distinctive shape position and character of the midline structures of the brain. The distinction between the character of the cerebral cortex which has a creamy color and the white matter exemplified by the corpus callosum (c) and septum pellucidum (sp) which are white, and the midbrain (mb) pons (p) and medulla (m) which are off white as opposed to the color of the cerebellum (c) which is light salmon pink is well demonstrated. The relative sizes of the forebrain, midbrain and hindbrain and their components are well appreciated in this section.
Image Courtesy of Thomas W.Smith, MD; Department of Pathology, University of Massachusetts Medical School. 97805b02
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The midsagittal section view of brain reveals the distinctive shape position and character of the midline structures of the brain. The distinction between the character of the cerebral cortex which has a creamy color and the white matter exemplified by the corpus callosum (c) and septum pellucidum (sp) which are white, and the midbrain (mb) pons (p) and medulla (m) which are off white as opposed to the color of the cerebellum (c) which is light salmon pink is well demonstrated. The relative sizes of the forebrain, midbrain and hindbrain and their components are well appreciated in this section.
Image Courtesy of Thomas W.Smith, MD; Department of Pathology, University of Massachusetts Medical School. 97805b02
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The midsagittal section view of brain reveals the distinctive shape position and character of the midline structures of the brain. The distinction between the character of the cerebral cortex which has a creamy color and the white matter exemplified by the corpus callosum (c) and septum pellucidum (sp) which are white, and the midbrain (mb) pons (p) and medulla (m) which are off white as opposed to the color of the cerebellum (c) which is light salmon pink is well demonstrated. The relative sizes of the forebrain, midbrain and hindbrain and their components are well appreciated in this section.
Image Courtesy of Thomas W.Smith, MD; Department of Pathology, University of Massachusetts Medical School. 97805b02
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Relation to Midbrain and Forebrain
Sagittal Section
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Relation to Midbrain and Forebrain
Sagittal Section
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The Concept In Vivo
The 3 ovoids are situated in the posterior cranial fossa the pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b.8s
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The Concept In Vivo
The 3 ovoids are situated in the posterior cranial fossa the pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b.8s
)
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The 3 ovoids are situated in the posterior cranial fossa the pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b.8s
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The 3 ovoids are situated in the posterior cranial fossa the pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b.8s
)
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The Concept In Vivo
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The Concept In Vivo
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Conceptual Framework of the Hindbrain
The hindbrain conceptually consists of 3 ovoids The pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b01.8s
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Conceptual Framework of the Hindbrain
The hindbrain conceptually consists of 3 ovoids The pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b01.8s
)
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The hindbrain conceptually consists of 3 ovoids The pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b01.8s
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The hindbrain conceptually consists of 3 ovoids The pons is anterior and superior (light pink), the medulla is smaller and is anterior and inferior, and the cerebellum is the largest and is posterior.
Courtesy Ashley Davidoff MD Copyright 2010 all rights reserved 92141.3kd03b03b01.8s
)
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Conceptual Framework of the Hindbrain
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Conceptual Framework of the Hindbrain
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Concepts Major Parts of the Brain
Hindbrain in Context
This artistic rendition of the brain reflects the vectors of the major parts of the brain with the stick diagram overlaid on a sagittal external view of the brain. In the stick diagram, the forebrain has now been divided into the frontal lobe (bright green), parietal lobe (light mauve) occipital lobe (purple) and temporal lobe (red). The midbrain is represented in orange, and the hind brain consists of the pons (pink) medulla (salmon) and the cerebellum (maroon)
Courtesy Ashley Davidoff copyright 2010 all rights reserved 83029e04.83s
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Concepts Major Parts of the Brain
Hindbrain in Context
This artistic rendition of the brain reflects the vectors of the major parts of the brain with the stick diagram overlaid on a sagittal external view of the brain. In the stick diagram, the forebrain has now been divided into the frontal lobe (bright green), parietal lobe (light mauve) occipital lobe (purple) and temporal lobe (red). The midbrain is represented in orange, and the hind brain consists of the pons (pink) medulla (salmon) and the cerebellum (maroon)
Courtesy Ashley Davidoff copyright 2010 all rights reserved 83029e04.83s
)
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This artistic rendition of the brain reflects the vectors of the major parts of the brain with the stick diagram overlaid on a sagittal external view of the brain. In the stick diagram, the forebrain has now been divided into the frontal lobe (bright green), parietal lobe (light mauve) occipital lobe (purple) and temporal lobe (red). The midbrain is represented in orange, and the hind brain consists of the pons (pink) medulla (salmon) and the cerebellum (maroon)
Courtesy Ashley Davidoff copyright 2010 all rights reserved 83029e04.83s
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This artistic rendition of the brain reflects the vectors of the major parts of the brain with the stick diagram overlaid on a sagittal external view of the brain. In the stick diagram, the forebrain has now been divided into the frontal lobe (bright green), parietal lobe (light mauve) occipital lobe (purple) and temporal lobe (red). The midbrain is represented in orange, and the hind brain consists of the pons (pink) medulla (salmon) and the cerebellum (maroon)
Courtesy Ashley Davidoff copyright 2010 all rights reserved 83029e04.83s
)
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Concepts Major Parts of the Brain
Hindbrain in Context
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Concepts Major Parts of the Brain
Hindbrain in Context
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The Hindbrain (rhombencephalon) in Context
The basic and simplest classification of the brain into forebrain midbrain and hindbrain is shown in this diagram and advanced to a more complex tree using the embryological and evolutionary terminologies.
The hindbrain is shown in the right column and is colored in dark red.
The forebrain consists of the cerebrum also called the prosencephalon, which contains the more advanced form of the brain and the thalamic structures which contain more basic structures.
The cerebrum (telencephalon) itself consists of two cerebral hemispheres and paired basal ganglial structures. Each cerebral hemisphere will have gray and white matter distributed in the frontal parietal temporal and occipital lobe, with the basal ganglia being part of the gray matter deep in the cerebral hemispheres. The most important thalamic structures arising from the diencephalons include the thalamus itself and the hypothalamus.
The midbrain (mesencepaholon) consists of the tectum tegmentum and cerebral peduncles.
The hindbrain has two major branch points based on the evolutionary development classification. The pons and cerebellum(part of the metencephalon) are grouped and the medulla (part of the myelencephalon) s the second branch.
Courtesy Ashley Davidoff MD Copyright 2010 All rights reserved 97686.8s
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The Hindbrain (rhombencephalon) in Context
The basic and simplest classification of the brain into forebrain midbrain and hindbrain is shown in this diagram and advanced to a more complex tree using the embryological and evolutionary terminologies.
The hindbrain is shown in the right column and is colored in dark red.
The forebrain consists of the cerebrum also called the prosencephalon, which contains the more advanced form of the brain and the thalamic structures which contain more basic structures.
The cerebrum (telencephalon) itself consists of two cerebral hemispheres and paired basal ganglial structures. Each cerebral hemisphere will have gray and white matter distributed in the frontal parietal temporal and occipital lobe, with the basal ganglia being part of the gray matter deep in the cerebral hemispheres. The most important thalamic structures arising from the diencephalons include the thalamus itself and the hypothalamus.
The midbrain (mesencepaholon) consists of the tectum tegmentum and cerebral peduncles.
The hindbrain has two major branch points based on the evolutionary development classification. The pons and cerebellum(part of the metencephalon) are grouped and the medulla (part of the myelencephalon) s the second branch.
Courtesy Ashley Davidoff MD Copyright 2010 All rights reserved 97686.8s
)
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The basic and simplest classification of the brain into forebrain midbrain and hindbrain is shown in this diagram and advanced to a more complex tree using the embryological and evolutionary terminologies.
The hindbrain is shown in the right column and is colored in dark red.
The forebrain consists of the cerebrum also called the prosencephalon, which contains the more advanced form of the brain and the thalamic structures which contain more basic structures.
The cerebrum (telencephalon) itself consists of two cerebral hemispheres and paired basal ganglial structures. Each cerebral hemisphere will have gray and white matter distributed in the frontal parietal temporal and occipital lobe, with the basal ganglia being part of the gray matter deep in the cerebral hemispheres. The most important thalamic structures arising from the diencephalons include the thalamus itself and the hypothalamus.
The midbrain (mesencepaholon) consists of the tectum tegmentum and cerebral peduncles.
The hindbrain has two major branch points based on the evolutionary development classification. The pons and cerebellum(part of the metencephalon) are grouped and the medulla (part of the myelencephalon) s the second branch.
Courtesy Ashley Davidoff MD Copyright 2010 All rights reserved 97686.8s
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The basic and simplest classification of the brain into forebrain midbrain and hindbrain is shown in this diagram and advanced to a more complex tree using the embryological and evolutionary terminologies.
The hindbrain is shown in the right column and is colored in dark red.
The forebrain consists of the cerebrum also called the prosencephalon, which contains the more advanced form of the brain and the thalamic structures which contain more basic structures.
The cerebrum (telencephalon) itself consists of two cerebral hemispheres and paired basal ganglial structures. Each cerebral hemisphere will have gray and white matter distributed in the frontal parietal temporal and occipital lobe, with the basal ganglia being part of the gray matter deep in the cerebral hemispheres. The most important thalamic structures arising from the diencephalons include the thalamus itself and the hypothalamus.
The midbrain (mesencepaholon) consists of the tectum tegmentum and cerebral peduncles.
The hindbrain has two major branch points based on the evolutionary development classification. The pons and cerebellum(part of the metencephalon) are grouped and the medulla (part of the myelencephalon) s the second branch.
Courtesy Ashley Davidoff MD Copyright 2010 All rights reserved 97686.8s
)
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