Anatomy Topic 3 Case 7 Flashcards
What are paramedian sulci
- Sulci that separate the vermis from the hemispheres
Where are the cerebellar tonsils located?
- Bilaterally to the uvula
What is the primary fissure?
- Deepest fissure
- Separates anterior lobe from posterior lobe
- Located inferior to culmen
What is the horizontal fissure?
- Largest fissure
- Separates cerebellum into an upper and lower portion
Where are the flocculi located?
- Bilaterally to the nodule
What does the flocculonodular lobe consist of and how is it separated form the uvula and tonsils?
- Flocculi and nodule
- By posterolateral fissure
Identify the four pairs of deep cerebellar nuclei
- Fastigial
- Globose
- Emboliform
- Dentate
What does the superior cerebellar peduncle form between and what does it contain?
- Midbrain and cerebellum
- Contains efferent fibres from dentate, emboliform and globose nuclei
What does the middle cerebellar peduncle form between and what does it contain?
- Pons and cerebellum
- Fibres arising from contralateral basal pontine nuclei
What does the middle inferior peduncle form between and what does it contain?
- Medulla oblongata and cerebellum
- Crossed fibres from fastigial nucleus
What is the archicerebellum?
- Flocculonodular lobe and fastigial nucleus
- Concerned with balance
What is the paleocerebellum?
- Vermis, globose and emboliform nuclei
- Regulates body and limb movements
What is the neocerebellum?
- Anterior and posterior cerebellar hemispheres and dentate nucleus
- Muscle co-ordination (timing of motor activities)
Identify the components of the basal ganglia
- Caudate nucleus
- Putamen
- Globus pallidus (internal and external)
- Subthalamic nucleus
- Substantia nigra (pars compacta and parts reticulata)
Where is the head of the caudate nucleus located?
- Floor and lateral wall of the anterior horn of the lateral ventricle, in front of the interventricular foramina
Where is the body of the caudate nucleus located?
- Floor of the body of the lateral ventricle
Where is the tail of the caudate nucleus located?
- Ventricular roof in the temporal lobe
What is the sulcus terminalis?
- Groove that forms a junction between the caudate nucleus and thalamus
Where is the substantia nigra located? How are thee two components arranged?
- Midbrain
- Deep to crus cerebri
- Lateral to red nucleus
- Pars reticulata is lateral
- Parts compacta is more medial
Where is the subthalamic nucleus located?
- Inferior to the thalamus
- Medial to the internal capsule
Identify the five components of the olfactory system
- Olfactory epithelium
- Olfactory nerves
- Olfactory bulb
- Olfactory tract
- Olfactory cortex
Where is the olfactory epithelium located?
- Upper fifth of the lateral and septal walls of the nasal cavity
Identify the three cell types of the olfactory epithelium
- Olfactory neurones, bipolar neurons grouped into fila by investing Schwann cells to form the olfactory nerve
- Substentacular cells
- Basal stem cells
What cell type does the olfactory nerve synapse with to from the olfactory bulb?
- Mitral cells