
Brain – Inferior surface
Mental Skills Required

Brain – Inferior surface
Mental Skills Required
Brain – Inferior surface

Mental Skills Required
Tools involved:
Tools involved:


Needed for this topic
Tools involved:


Frontal Lobe
- the gyrus rectus
- the anterior, posterior, medial, and lateral orbital gyri
- the frontomarginal gyrus (located between the orbital and the lateral surfaces)
- the olfactory sulcus
- the H-shaped orbital sulcus

Frontal Lobe
- the gyrus rectus
- the anterior, posterior, medial, and lateral orbital gyri
- the frontomarginal gyrus (located between the orbital and the lateral surfaces)
- the olfactory sulcus
- the H-shaped orbital sulcus

Frontal Lobe
- the gyrus rectus
- the anterior, posterior, medial, and lateral orbital gyri
- the frontomarginal gyrus (located between the orbital and the lateral surfaces)
- the olfactory sulcus
- the H-shaped orbital sulcus

Gyrus Rectus

The gyrus extending on the edge between the medial and inferior surfaces of the frontal lobe. It is medial to the olfactory sulcus, and inferior to the supraorbital sulcus.
It is bounded posteriorly by the anterior perforated substance and the subcallosal gyrus. On the medial surface, the medial limit is represented by the interhemispheric fissure.
Gyrus Rectus

The gyrus extending on the edge between the medial and inferior surfaces of the frontal lobe. It is medial to the olfactory sulcus, and inferior to the supraorbital sulcus.
It is bounded posteriorly by the anterior perforated substance and the subcallosal gyrus. On the medial surface, the medial limit is represented by the interhemispheric fissure.
Gyrus Rectus

The gyrus extending on the edge between the medial and inferior surfaces of the frontal lobe. It is medial to the olfactory sulcus, and inferior to the supraorbital sulcus.
It is bounded posteriorly by the anterior perforated substance and the subcallosal gyrus. On the medial surface, the medial limit is represented by the interhemispheric fissure.
Olfactory sulcus

Olfactory sulcus

Olfactory sulcus

Orbital sulcus

Orbital sulcus

Orbital sulcus

The H shaped sulcus formed by a transverse sulcus in the middle and two lateral sagittal sulci. it separates the 4 orbital gyri. The longitudinal sulci are called medial and lateral orbital sulci; they cross the transverse orbital sulcus. This characteristic form, however, presents a great variability.
Orbital gyri
The medial orbital sulcus is divided into rostral and caudal segments: the rostral portion separates the anterior orbital gyrus from the medial orbital gyrus; the caudal portion divides the medial orbital gyrus from the posterior one.
The lateral orbital sulcus is also divided into two segments: the rostral portion separates the anterior orbital gyrus from the lateral one; the caudal portion divides the posterior orbital gyrus from the lateral one. The transverse orbital sulcus crosses the longitudinal sulci in their middle point, separating the anterior from the posterior orbital gyri.

Orbital gyri
The medial orbital sulcus is divided into rostral and caudal segments: the rostral portion separates the anterior orbital gyrus from the medial orbital gyrus; the caudal portion divides the medial orbital gyrus from the posterior one.
The lateral orbital sulcus is also divided into two segments: the rostral portion separates the anterior orbital gyrus from the lateral one; the caudal portion divides the posterior orbital gyrus from the lateral one. The transverse orbital sulcus crosses the longitudinal sulci in their middle point, separating the anterior from the posterior orbital gyri.

Orbital gyri
The medial orbital sulcus is divided into rostral and caudal segments: the rostral portion separates the anterior orbital gyrus from the medial orbital gyrus; the caudal portion divides the medial orbital gyrus from the posterior one.
The lateral orbital sulcus is also divided into two segments: the rostral portion separates the anterior orbital gyrus from the lateral one; the caudal portion divides the posterior orbital gyrus from the lateral one. The transverse orbital sulcus crosses the longitudinal sulci in their middle point, separating the anterior from the posterior orbital gyri.


Anterior orbital gyrus

Anterior orbital gyrus

Anterior orbital gyrus

Posterior orbital gyrus
The gyrus located between the medial and lateral orbital gyri. It is bounded posteriorly by the anterior perforated substance and anteriorly by the transverse orbital sulcus. Sometimes, accessory sulci split this gyrus.



The gyrus included between the gyrus rectus medially and the anterior and posterior orbital gyri laterally. Sometimes, accessory sulci split this gyrus.

Medial orbital gyrus

Medial orbital gyrus


Lateral orbital gyrus

Lateral orbital gyrus
The gyrus placed between the lateral orbital sulcus and the inferolateral margin of the hemisphere.
Frontal Lobe
- the rhinal sulcus
- the collateral sulcus
- the occipital temporal sulcus.
- the parahippocampal gyrus
- the occipital temporal gyrus
- the inferior temporal gyrus.


Collateral sulcus

It is formed, from anterior to posterior, by three different portions: the rhinal sulcus /orange/, the collateral sulcus proper /green/, and the caudal (occipital) collateral sulcus /blue/.
Temporal Lobe
- the rhinal sulcus
- the collateral sulcus
- the occipital temporal sulcus.
They bound, from medial to lateral:
- the parahippocampal gyrus
- the occipital temporal gyrus
- the inferior temporal gyrus.


Collateral sulcus

It is formed, from anterior to posterior, by three different portions: the rhinal sulcus /orange/, the collateral sulcus proper /green/, and the caudal (occipital) collateral sulcus /blue/.
Temporal Lobe
- the rhinal sulcus
- the collateral sulcus
- the occipital temporal sulcus.
- the parahippocampal gyrus
- the occipital temporal gyrus
- the inferior temporal gyrus.


Collateral sulcus

It is formed, from anterior to posterior, by three different portions: the rhinal sulcus /orange/, the collateral sulcus proper /green/, and the caudal (occipital) collateral sulcus /blue/.
Parahippocampal ramus

Occipito-temporal sulcus

Rhinal sulcus

The convolution on the medial surface of the temporal lobe which is part of the limbic lobe. it is limited by the basal surface of the superior temporal gyrus anteriorly, by the uncus medially, the fusiform gyrus laterally and by the lingula posteriorly.
Its antero-posterior extension corresponds to the level of the rostrum and the splenium of the corpus callosum.
Parahippocampal gyrus

Parahippocampal gyrus
Lateral occipito-temporal gyrus

The gyrus extending from the inferior surface of the temporal lobe to the occipital lobe, also known as fusiform gyrus. It can also be divided into anterior fusiform gyrus and posterior fusiform gyrus.
On the anterior surface, it is bounded by the temporal pole; on the medial surface the collateral sulcus divides it from the parahippocampal and lingual gyri.

Parahippocampal ramus

Occipito-temporal sulcus

Rhinal sulcus

The convolution on the medial surface of the temporal lobe which is part of the limbic lobe. it is limited by the basal surface of the superior temporal gyrus anteriorly, by the uncus medially, the fusiform gyrus laterally and by the lingula posteriorly.
Its antero-posterior extension corresponds to the level of the rostrum and the splenium of the corpus callosum.
Parahippocampal gyrus

Parahippocampal gyrus

The gyrus extending from the inferior surface of the temporal lobe to the occipital lobe, also known as fusiform gyrus. It can also be divided into anterior fusiform gyrus and posterior fusiform gyrus.
On the anterior surface, it is bounded by the temporal pole; on the medial surface the collateral sulcus divides it from the parahippocampal and lingual gyri.
Lateral occipito-temporal gyrus

Parahippocampal ramus

Occipito-temporal sulcus

Rhinal sulcus

The convolution on the medial surface of the temporal lobe which is part of the limbic lobe. it is limited by the basal surface of the superior temporal gyrus anteriorly, by the uncus medially, the fusiform gyrus laterally and by the lingula posteriorly.
Its antero-posterior extension corresponds to the level of the rostrum and the splenium of the corpus callosum.
Parahippocampal gyrus
Parahippocampal gyrus

Lateral occipito-temporal gyrus


Occipital Lobe

Occipital Lobe

Occipital Lobe
The basal surface is continuous to the basal surface of the temporal lobe. It presents the prolongation of gyri and sulci that can be seen on the inferior surface of the temporal lobe.

Other Structures
Anterior perforated substance

The portion of gray matter crossed by venous and arterial components: perforating arteries from the internal carotid, anterior and middle cerebral arteries, and inferior striate veins.
On the anterior surface, it is limited by the olfactory striae and on the medial surface by the optic chiasm. Laterally, it is bordered by the limen insulae and the temporal lobe.
Optic chiasm

Optic tracts

Pituitary infundibulum

Pituitary gland

Tuber Cinereum
The anterior portion of the interpenduncular region, limited by the optic chiasm, anteriorly, and the two mammillary bodies, posteriorly.
It constitutes part of the floor of the third ventricle and hosts the infundibulum of the pituitary gland, which subdivides the tuber into H shape: the anterior, posterior, right and left areas.
Mammillary bodies

The inferior ends of the anterior portion of the fornix constituting the posterior portion of the floor of the third ventricle, being located behind the tuber cinereum.
Other Structures

The portion of gray matter crossed by venous and arterial components: perforating arteries from the internal carotid, anterior and middle cerebral arteries, and inferior striate veins.
On the anterior surface, it is limited by the olfactory striae and on the medial surface by the optic chiasm. Laterally, it is bordered by the limen insulae and the temporal lobe.
Anterior perforated substance

Optic chiasm

Optic tracts

Pituitary infundibulum

Pituitary gland
Tuber Cinereum
The anterior portion of the interpenduncular region, limited by the optic chiasm, anteriorly, and the two mammillary bodies, posteriorly.
It constitutes part of the floor of the third ventricle and hosts the infundibulum of the pituitary gland, which subdivides the tuber into H shape: the anterior, posterior, right and left areas.

Mammillary bodies
Meet the author.
Other Structures
Anterior perforated substance

The portion of gray matter crossed by venous and arterial components: perforating arteries from the internal carotid, anterior and middle cerebral arteries, and inferior striate veins.
On the anterior surface, it is limited by the olfactory striae and on the medial surface by the optic chiasm. Laterally, it is bordered by the limen insulae and the temporal lobe.
Optic chiasm

Optic tracts

Pituitary infundibulum

Pituitary gland

Tuber Cinereum
The anterior portion of the interpenduncular region, limited by the optic chiasm, anteriorly, and the two mammillary bodies, posteriorly.
It constitutes part of the floor of the third ventricle and hosts the infundibulum of the pituitary gland, which subdivides the tuber into H shape: the anterior, posterior, right and left areas.
Mammillary bodies

The inferior ends of the anterior portion of the fornix constituting the posterior portion of the floor of the third ventricle, being located behind the tuber cinereum.

Store
3D Apps, Physical Simulators, Augmented reality tools
The UpSurgeOn Store offers you a series of virtual and physical technologies to give you the best training experience EVER


Store
3D Apps, Physical simulators, Augmented reality tools
The UpSurgeOn Store offers you a series of virtual and physical technologies to give you the best training experience EVER

Store
3D Apps, Physical Simulators, Augmented reality tools
The UpSurgeOn Store offers you a series of virtual and physical technologies to give you the best training experience EVER


Supported by the European Union
This project has received funding from the Eropean Union's H2020 Research and Innovation Programme under grant agreement n.880895

Supported by the European Union
This project has received funding from the Eropean Union's H2020 Research and Innovation Programme under grant agreement n.880895
Supported by the European Union
This project has received funding from the Eropean Union’s H2020 Research and Innovation Programme under grant agreement n.880895

Join UpSurgeOn Community

Join UpSurgeOn Community
Join UpSurgeOn Community
Join our newsletter and stay up to date with the latest news!