Cerebral arterial circle (Willis)
Product code: HP1217
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Whole Whole region / system / unpaired organ.
The brain receives a rich blood supply from branches of the vertebral and internal carotid arteries, which interconnect via the cerebral arterial circle. This ring of vessels may provide collateral circulation in the event of unequal pressure in supplying vessels. Due to its location and relations, the arterial circle is difficult to visualise. This Silicone Plastinate reveals the structure, position interconnections and branches of the cerebral arterial circle, and the initial course of associated branches. Parts of the structure and relations of the lateral ventricles are also revealed, alongside the choroid plexus and its blood supply.
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Complementary left-right side views
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Polymer injected arteries
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Stand mounted
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Human tissue with unique ID
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Full aftersales support
Key features include
- Optic chiasm and pituitary gland removed to reveal the structure, location and branches of the cerebral arterial circle (Willis).
- Internal carotid artery and various branches including the anterior cerebral, middle cerebral and anterior choroidal arteries.
- Basilar artery and various branches including the superior cerebellar artery and posterior cerebral artery and their relationship with the oculomotor (CN III) and trochlea (CN IV) nerves.
- Midbrain and proximal pons, with superior and inferior colliculi, cerebral peduncles and pineal gland.
- Internal capsule and corona radiata (one side) and part of insula (opposite side).
- Optic tract and lateral geniculate nucleus.
- Lateral ventricles opened to reveal the interventricular foramina and parts of the septum pellucidum, choroid plexus, caudate nucleus, hippocampus, thalamus and fornix.
- Part of the fornix removed to reveal a superior view into the third ventricle and the posterior choroidal artery.
Possible variants or pathology (not guaranteed)
- Position of brain and brainstem cuts.
- Bilateral presence of cranial nerves.
- Amount of the olfactory tract retained.
- Adult onset or normal pressure hydrocephalus.
- Visibility of the interventricular foramen.
- Branching pattern of the cerebral arterial circle (Willis) or its branches.
- Location and morphology of communicating arteries.
- Position and branching pattern of the arteries of the brain.
Available customisations
- Stand mounting.
