Nervous System: Anatomy Class 2 Flashcards
What kinds of fibres pass through the corpus callosum ?
Commissural Fibres
What are the 4 parts of the corpus callosum ?
1: Splenium
2: Body
3: Genu
4: Rostrum
What separates the 2 anterior horns of the lateral ventricles ?
Septum Pellicidum
What is the fornix ?
The fornix is a bundle of fibres which links the hippocampus with the hypothalamus
What is the bulbous projection on the floor of the lateral ventricle ?
Caudate nucleus
List some of the functions of the hypothalamus
Temperature control
Appetite
Thirst
Sleep cycle
What does the stalk of the pituitary gland hang from ?
The hypothalamus
What does the lentiform nucleus consist of ?
The putamen and the globus pallidus
What does the striatum consist of ?
Caudate nucleus and the putamen
What is the basal ganglia (nucleus) formed from ?
The striatum and the lentiform nucleius
What is the name of the white mater structure which is situated in the infromedial part of each cerebral hemisphere ?
The internal capsule
What is the main blood supply to the internal capsule ?
Middle cerebral artery
What kinds of fibres connect the cerebral hemispheres with other parts of the brain ?
Projection fibres
What kinds of fibres connect regions within the same hemisphere of the brain ?
Association fibres
Which group of structures is the substantia nigra a part of, functionally ?
The basal ganglia
At what vertebral level does the spinal cord end in adults ?
L2/L3
What does a slice of the spinal cord look like in the cervical region ?
The body is oval and thick with thin dorsal and ventral horns
What does a slice of the spinal cord look like in the Thoracic region ?
Small round body with thin dorsal horns
What does a slice of the spinal cord look like in the Lumbar region ?
Round body with large ventral horns
What does a slice of the spinal cord look like in the sacral region ?
round body with very large ventral horns
Which aspect of the spinal cord receives sensory nerve fibres ?
Dorsal root ganglia
From which aspect of the spinal cord do motor nerve fibres project ?
Ventral root
What is the name of the hole in the middle of the spinal cord and what does it contain ?
Central canal and CSF
Through which foramen does Cranial Nerve I pass through and which cranial nerve is this ?
The olfactory nerve passes through the cribriform plate of the ethmoid bone
Through which foramen does Cranial Nerve III pass through and which cranial nerve is this ?
Occulomotor nerve passes through the superior orbital fissure
Through which foramen does Cranial Nerve II pass through and which cranial nerve is this ?
The optic nerve passes through the optic foramen (canal)
Through which foramen does Cranial Nerve IV pass through and which cranial nerve is this ?
The trochlear nerve passes through the superior orbital fissure
Through which foramen does Cranial Nerve V pass through and which cranial nerve is this ?
The trigeminal nerve has 3 components to it (V1-3) each going through their own foramen within the skull
Through which foramen does Cranial Nerve V1 pass through and which cranial nerve is this ?
This is the opthalmic branch of the trigeminal nerve, this pass through the superior orbital fissure
Through which foramen does Cranial Nerve V2 pass through and which cranial nerve is this ?
This is the maxillary branch of the trigeminal nerve which goes through the foramen rotundum
Through which foramen does Cranial Nerve V3 pass through and which cranial nerve is this ?
This is the mandibular branch of the trigeminal nerve which goes through foramen ovale within the skull
Through which foramen does Cranial Nerve VI pass through and which cranial nerve is this ?
This is the abducent nerve which passes through the superior orbital fissure
Through which foramen does Cranial Nerve VII pass through and which cranial nerve is this ?
This is the facial nerve which pass through the stylomastoid foramen
Through which foramen does Cranial Nerve VIII pass through and which cranial nerve is this ?
This is the vestibulocochlear nerve which passes through the Internal acoustic meatus
Through which foramen does Cranial Nerve IX pass through and which cranial nerve is this ?
This is the glossopharyngeal nerve which pass through the jugular foramen
Through which foramen does Cranial Nerve X pass through and which cranial nerve is this ?
This is the vagus nerve and it exits the skull through the jugular foramen
Through which foramen does Cranial Nerve XI pass through and which cranial nerve is this ?
This is the accessory nerve which passes through the jugular foramen
Through which foramen does Cranial Nerve XII pass through and which cranial nerve is this ?
This is the hypoglossal nerve which exits the skull via the hypoglossal canal
Cranial nerve I contains what kind of fibres ?
Purely special snnsory
Cranial nerve II contains what kind of fibres ?
Purely special sensory
Cranial nerve III contain what kind of fibres ?
Purely motor
Cranial nerve IV contains what kind of fibres ?
Purely motor
Cranial nerve V contains what kind of fibres ?
Both sensory and motor
Cranial nevre VI contains what kind of fibres ?
Purely motor
Cranial nerve VII contains what kind of fibres ?
Both motor and sensory
Cranial nerve VIII contains what kind of fibres ?
Purely sensory
Cranial nerve IX contains what kind of fibres ?
Glossopharyngeal nerve contains both sensory and motor
Cranial nerve X contains what kind of fibres ?
Both motor and sensory
Cranial nerve XI contains what kind of fibres ?
Purely motor
Cranial nerve XII contains what kind of fibres ?
Motor fibres only
What cranial nerves can transmit parasympathetic fibres ?
There are only 4: Vagus Glossopharyngeal Occulomotor Facial