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22 Cards in this Set
- Front
- Back
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What three things make up the hind brain? |
Medulla oblongata Pons Cerebellum |
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What makes up the midbrain? |
Mesencephalon
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What do the nuclei and cranial nerves represent? |
The continuation of the four function components:
Somatic afferent Visceral afferent Visceral efferent Somatic |
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Where is the Cerebellum located and what is its function? |
Located: above pons and medulla oblongata Function: Control of balance, posture, coordination and locomotion |
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What does the forebrain consist of? |
Diencephalon Telencephalon ( paired cerebral hemisphere) |
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Where is the Diencephalon? What is visible on the external surface? |
Location: most of the rostral part of the brain stem
Only the hypothalamus is visible on the external surface |
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What does the Telencephalon consist of? |
Paired hemispheres and the lamina terminalis grisea |
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What is the Telencephalon also known as? |
Cerebrum |
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What is the Paleopallium? |
Confined to the basal part of the brain it is separated from the neopallium by the rhinal sulcus on the lateral surface |
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Where do the Basal nuclei lie and where do a number of them combine? |
Lie: Dorsal to the paleopallium Combine: with white substance to form the corpus striatum |
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What does the Neopallium consist of? |
Consists of the major part of the Telencephalon, it exhibits six superimposed strata that are densely populated by spherical and pyramindal neurones |
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What is the Archipallium divided into and what is it concerned with? |
Divided into: Corpus callosum, hippocampus Concerned with: correlation of olfactory with other sensory information and limbic system |
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What are somatic afferent pathways? |
Fibre tracts and intercalated nuclei which convey information from receptors in the skin and deeper tissues. |
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What are the vestibular pathways? |
Vestibular fibres that enter the brainstem in the common vestibulocochlear trunk, penetrating the trapezoid body.
Conscious perception fibres of vestibular stimular start via the lateral lemniscus and thalamic nuclei to a particular region of the cerebral cortex. |
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What are lower somatic motor neurones and what is their function? |
Located within the ventral column of the grey mater of the spinal cord.
Provide the efferent limbs of simple reflexes |
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What are the upper somatic motor neurones and what is their function? |
Located in the main motor area of neopallium
Involved in more complicated reflexes and initiate voluntary movements |
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What is the Cerebellar function? |
Ensures movements are executed as intended
Controls both pyramidal and extrapyramidal functions
Receives signals from the pyramidal and extrapyramidal systems and feedbacks to caudal lobe |
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What does the visceral nervous system do? |
Maintains internal environment within permissible limits
Controls visceral functions |
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What is the Hypophysis and what does it do? |
Pituitary gland
Consists of: Neurohypophysis (posterior lobe) Adenohypophysis (anterior and intermediate lobes) |
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Olfactory nerve |
Location: arises from nasal mucosa, fibres transverse cribiform plate and join to olfactory bulb
Surrounded by: meningeal sheaths
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Optic nerve |
Function: Mediates visual senses
What it is: brain tract connecting retina with the diencephalon
Enclosed within extensions of the meninges |
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Trigeminal Nerve |
Largest cranial nerve
Sensory to the skin and deeper tissue of the face and motor to the muscles of the mandibular arch
Distribution patter: Ophthalmic, Nasocilary, Maxillary, Lingual, Inferior Alveolar |
