cross-sectional anatomy of the brain
Post on 31-May-2022
15 Views
Preview:
TRANSCRIPT
Cross-sectional Anatomy of the Brain
Amadi O. Ihunwo, PhD
School of Anatomical Sciences
Objectives
Identify the different structures on sections of the brain
• Spinal Cord
• Medulla, Pons, Midbrain
• Cerebrum
Coronal:
Horizontal:
• Cerebellum: Deep nuclei
Spinal Cord – internal structure
Cervical Thoracic
Lumbar Sacral
More white matter
More grey matter
3
Medulla
Pyramidal decussation
Internal arcuate fibres
Inferior olivary Nucleus
NG
NC
Medial Lemniscus
P
Pons
Caudal
Mid-pons
Rostral
Midbrain
Inferior Colliculus
Superior Colliculus
Red
SN
IC
SC
PG CA
} } } CC
}
Coronal sections through striatum
A – Close to splenium of corpus callosum
B – Passing through the amygdala
C – Passing through anterior commissure
D – Passing close to the anterior edge of septum pellucidum before the genu
AC – anterior commissure Acc – Nucleus accumbens Am - amygdala C – caudate nucleus G – globus Pallidus P – putamen T – thalamus
Rostro-caudal Coronal section – Head of Caudate Nucleus
Cerebrum
Anterior Commissure
Mammillary Bodies
MRI
Intracerebellar Nuclei
Lateral to medial • Dentate
– largest & most prominent – shape of a wrinkled purse
• Emboliform – oval shape
• Globose – 2-3 small masses
• Fastigial – 2nd largest
15
D
16
Finger movements on MRI
Textbook Reference
Neuroanatomy: An illustrated colour text
5th Edition by AR Crossman and D Neary
FitzGerald et al (2012) Clinical Neuroanatomy and Neuroscience. 6th ed.
top related