This is a slice through what part of the brainstem? ANATOMICAL CLINICAL 2 IV Ventricle Hypoglossal nucleus 5 9 tegmentum Base (pyramid) 6 1 Periven- tricular area wall 3 reticular formation 4 10 wall reticular formation 11 inferior olivary nuclei 8 periventric. area 12 Base (pyramidal tracts or pyramids) tegmentum 7 13 This is a slice through what part of the brainstem? Mid/Rostral Medulla

3 (open arrow is b/t what 2 structures?) 1 skull Inner & outer edges of base (pyramids) 2 (black arrows) groove b/t inferior olivary nuclei & inferior cerebral peduncle 3 (open arrow is b/t what 2 structures?) 6 subarachnoid space (SAS) 5 4 cerebellum IV ventricle This is an axial MR T2 through through what part of the brainstem? Mid/Rostral Medulla

6 (What nucleus is located here?) pyramid (base) 1 6 (What nucleus is located here?) inferior olivary nuclei wall (inf. cere- bellar peduncle) 2 reticular formation 5 periventricular area 4 TEGMENTUM 3

4 (What nucleus is located here?) 1 pyramid Inferior olivary nuclei 2 inferior cerebellar peduncle 5 IV ventricle 3 Hypoglossal nucleus 4 (What nucleus is located here?)

This is a slice through what part of the brainstem? Anatomical Orientation Clinical Orientation 3 IV Ventricle 13 BASE 1 WALL PERIVENTRIC. AREA 2 10 (What Nucleus?) RETICULAR FORM. 14 Facial Nucleus Facial Nerve Roots TEGMENTUM 15 11 (What N Roots?) RETICULAR FORM. 4 12 (What Nucleus?) 5 TEGMENTUM Abducens Nucleus PERIVENTRIC. AREA 9 (What Nucleus?) Facial Nucleus 16 WALL 17 Facial N. Roots CN VI N. 8 (What N Roots?) BASE 6 7 (What N Roots?) This is a slice through what part of the brainstem? Caudal Pons

1 2 3 4 Middle cranial Fossa with Temporal cortex eye 2 Middle cranial Fossa with Temporal cortex Posterior Cranial Fossa & Subarachnoid Space 3 skull 4

2 1 3 4 5 6 Subarachnoid space (SAS) in posterior cranial fossa Artery (basilar) 1 Nerve roots in Bony canal of Skull 3 CAUDAL PONS 4 5 IV ventr. CEREBELLUM 6

1 9 2 8 3 7 4 6 5 Wall Base Tegmentum Abducens Nerve roots Facial Nucleus Facial N. Roots 8 3 7 Abducens Nucleus 4 Reticular Formation Periventricular zone 6 5

This is a slice through what part of the brainstem? Anatomical Orientation Clinical Orientation 2 superior colliculus 1 3 ROOF Cerebral aqueduct TEGMENTUM 11 Periaqueductal Gray (periventricular area) 4 substantia nigra 10 Reticular Formation 5 9 BASE position, III nerve roots oculomotor nucleus 6 (What Nucleus?) 7 (N Roots?) Crus Cerebri (cere- bral peduncles) Cerebral aqueduct 12 8 This is a slice through what part of the brainstem? Rostral Midbrain

1 Midbrain SUBARACHNOID SPACE 2

6 1 2 3 4 5 7 8 approximate position of cerebral aqueduct position, III nerve roots 6 BASE (crus cerebri) SUBSTANTIA NIGRA TEGMENTUM: reticular formation + PAG ROOF or TECTUM (superior colliculus) 1 2 3 4 5 III Nucleus in the periaqueductal gray 7 approximate position of cerebral aqueduct 8

TELENCEPHALON: cortex deep white matter 1 2 13 subcortical FRONTAL LOBES 13 subcortical white matter 3 subcortical nuclei (outlined by dark lines) 7 (What Nuclei?) INTERNAL CAPSULE: anterior limb 8 cerebral cortex 4 genu 9 5 Lateral ventricle posterior limb 10 deep white matter 6 DIENCEPHALON: thalamus pineal gland 11 12 14 OCCIPITAL LOBES

1 cortex 6 subcortical white matter 7 posterior limb, internal capsule frontal horn of lateral ventricle 1 cortex 6 subcortical white matter 7 posterior limb, internal capsule 2 deep white matter 8 3 parietal lobe (probably) posterior limb of int. capsule between thalamus subcortical nucleus 9 temporal lobe posterior cranial fossa with brainstem 4 10 5 11 (What Nucleus?) 12 temporal horn of Lateral ventricle

2 1 Imaginary Line 8 9 3 10 5 6 11 4 12 7

5 - Contains Primary Motor Cortex – initiate voluntary movement on opposite side of body 4 6 7 - Contains Primary Somatosensory Cortex 3 8 9 2 1 10 Posterior parts of inf. Frontal gyrus are called Broca’s Area – (left hemisphere) expressive language 14 13 Primary Auditory Cortex 12 11

2 3 4 5 1 6 7

Contains Lower limb portion of somatosensory cortex 5 Contains lower limb primary motor cortex- 6 4 7 3 8 2 9 10 1 11 Contains primary visual cortex in its walls 13 12

2 1 3 4 5 6 7 Planum Temporal – sensory processing Taste and visceral sense 4 Planum Temporal – sensory processing 5 -Contains Primary Auditory Cortex 6 7

3 4 Contains lower limb primary motor cortex- 5 2 1 6 14 13 7 8 12 9 11 10

4 3 2 1 5 6 3rd ventricle 10 9 8 7

2 3 3 4 5 1 Cerebral Cortex Subcortical White Matter Deep White Matter – Containing Subcortical Nuclei 3 4 5 Posterior Limb of Internal Capsule 1 Diencephalon

9 Subcortical nuclei of the telencephalon 5 10 1 2 11 6 3 12 4 13 7 8 14

1 4 6 7 5 2 8 9 3 34 is rostral to 35 10 15 23 11 19 16 12 20 24 21 25 13 17 22 26 14 18 27