Control lecture 5: Forebrain and ventricles Flashcards
What does the forebrain consist of?
The diencephalon and cerebral hemispheres.
For what is the forebrain responsible?
Higher level processing
From what part of the forebrain do the optic nerves originate?
The diencephalon (thalamus).
What name is given to the ridge that seperates the diencephalon into the thalamus and hypothalamus?
The hypothalamic sulcus
Exactly what are the thalamus/hypothalamus?
A collection of nuclei.
What are the features of the thalamus?
Large, egg-shaped collection of nuclei
One on each side of midline
3rd ventricle wedged between
All (but one - reticular) nuclei send fibres to cerebral cortex, either to sharply defined area or more diffusely
Those connecting to defined cortical area are RELAY nuclei, may be sensory or motor
What are the features of the hypothalamus?
Also made up of several nuclei
Has autonomic and neuroendocrine functions
What is the subthalamus
Underneath thalamus and hypothalamus. Involved in motor control. Lesion causes random motor contractions.
What is the epithalamus?
Mostly the pineal gland (secretes melatonin)
From what structure does the corpus callosum develop?
Lamina terminalis
