11. Forebrain, Third Ventricle, Related Structure and Cortex Flashcards
What makes up the telencephalon?
Cerebral hemispheres
What makes up the diencephalon?
Pineal gland
Thalamus
Hypothalamus
What is the name for the telencephalon and diencephalon combined?
Prosencephalon or forebrain
What do association fibres connect?
Sites within the same hemisphere
What do projection fibres connect?
Cerebral cortex to subcortical structures
What do commissural fibres connect?
One cerebral hemisphere to the other
What is the frontal lobe associated with?
Intelligence
Calculation
Rational
What is the temporal lobe associated with?
Articulation
What is the parietal lobe associated with?
Handwriting
What is the occipital lobe associated with?
Language
Comprehension
Where is Broca’s area?
Anterior inferior portion of frontal lobe
What does damage to Broca’s area cause?
Motor/non-fluent aphasia
Laboured speech, missing words
Aware of problem
Dysarthia and dysgraphia
Where is Wernicke’s area?
Posterior temporal lobe
What does damage to Wernicke’s area cause?
Sensory/fluent aphasia Auditory incomprehension With large lesion, may lose ability to read Confuse words Unaware of problem
Which lobe is the anterior horn of the lateral ventricles in?
Frontal
Which lobe is the body of the lateral ventricles in?
Parietal
Which lobe is the inferior horn of the lateral ventricles in?
Temporal
Which lobe is the posterior horn of the lateral ventricles in?
Occipital
What separates the 2 lateral ventricles?
Septum pellucidum
Which meningeal layer is the choroid plexus found in?
Pia mater
What is anterior to the third ventricle?
Lamina terminalis
What is in the floor of the third ventricle?
Optic chiasma
Infundibulum
Mamillary bodies
What is the position of the pineal gland?
In epithalamus above superior colliculus
What does the pineal gland secrete?
Melatonin
What connects the thalami in the midline?
Interthalamic adhesion
What is the posterior pole of the thalamus also known as?
Pulvinar
What part of the thalamus is used to relay visual information?
Lateral geniculate body
What type of information is relayed from the medial geniculate body?
Auditory
What is a sign of thalamic lesion?
Contralateral hemianaesthesia
Which cranial nerves carry special sensory information?
1 Smell
2 Vision
7 and 9 Taste
8 Hearing and Balance