Week 2 Wet Room Flashcards
What kind of fibres pass through the corpus callosum
Commmisural fibres
Describe the septum pellucidum
A thin sheet which lies in the mid sagittal plane and separates the anterior horns of the 2 lateral ventricles
What surrounds the septum pellucisum
Corpus callosum and Fornix
What is the Fornix
Bundle of fibres which links the hippocampus with the mammillary bodies of the hypothalamus
List some of the functions of the hypothalamus
Homeostasis Endocrine control Autonomic control Limbic functions Sexual behaviour Regulating body temperature
What dural fold overlies the pituitary gland
diaphragma sellae- dura mater
Where are the colliculi in relation to the pineal gland
Inferior to pineal gland
Name some features seen in a transverse section of the brain
Median longitudinal fissure Anterior horn of lateral ventricle Caudate nucleus Lentiform nucleus (putamen and globus pallidus) Thalamus Tail of caudate nucleus Posterior horn of lateral ventricle Third ventricle
What structures together constitute the basal ganglia (nuclei)
Lentiform nucleus
Caudate nucleus
What is the name given to the fibres that connect the cerebral hemispheres with other parts of the brain
Projection fibres
Which cerebral artery through one of its branches supplies the internal capsule
Middle cerebral artery
Identify a distinctive feature of the midbrain
Substantia nigra
Which group of structures is the substantia migrant a part of
Basal ganglia
Where would the red nucleus be in relation to the substantial nigra
Anterior to it
What fibres do the cerebral peduncles contain
Large ascending (sensory) and descending (motor) nerve tracts from cerebrum to pons
Which part of the pons would motor fibres and sensory fibres from the medial lemniscus occupy
Ventral
What fibres make up the pyramid and olive in the medulla
Inferior olivary nucleus on the ventral surface
Features of cervical spinal cord
Large white matter
Small grey matter
Long slender posterior horn
Broad massive anterior horn
Features of thoracic spinal cord
Large white matter
Small grey matter
Lateral horn
Slender posterior horn and anterior horn
Features of lumbar spinal cord
White matter is larger than cervical and thoracic.
Bulbous and short anterior and posterior horn
features of sacral spinal cord
White matter less than grey matter
Massive and ovoid posterior horn and anterior horn
Which aspect of the spinal cord receives sensory nerve fibres
Dorsal horn
From which aspect of the spinal cord do motor nerve fibres project
Ventral root
Why does size of the ventral grey horn vary along the spinal cord
Ascending tracts gain fibres at each succession level and the opposite happens for descending.
High levels contain greater amounts of white matter
What is the nae of the hole in the middle of the spinal cord an what does it contain
Central canal
CSF
