Flashcards in Lab 2: Brain Deck (82)
What is the forebrain made up of?
Superficial part of the hemispheres
What is the superficial part of the hemispheres made up of in a medial view??
Cortex, corpus callosum, parieto-occipital sulcus, calcarine sulcus, primary visual cortex
What is the cortex?
Grey matter thrown into ridges gyri and folds sulci.
What is the corpus callosum?
A white matter tract carrying information between the hemispheres.
Where is the primary visual cortex centred?
On the calcarine sulcus.
What is the diencephalon made up of in a medial view?
Thalamus, hypothalamus, pituitary gland, third ventricle
What is the function of the thalamus?
Relays almost all sensory input to the cortex.
What are the functions of the hypothalamus?
Controls internal body functions, and the autonomic nervous system.
What is the pituitary gland? What is it controlled by?
A gland attached to the hypothalamus and controlled by it.
Which gland is always torn off when the brain is removed from the skull?
What is the third ventricle? What is it's appearance?
The ventricle of the diencephalon.
A slight depression overlying the thalamus.
What is the midbrain made up of in a medial view?
Superior and inferior colliculi, cerebral aqueduct, cerebral peduncles.
What do the superior and inferior colliculi form the roof of?
What are the roles of the colliculi?
The roof of the midbrain.
Have a minor role in controlling eye movements, and movements related to auditory stimuli.
What is the cerebral aqueduct?
A narrow passage linking the 3rd and 4th ventricles, about as thick as a matchstick.
What are the cerebral peduncles? What do they make up the floor of?
Thick white-matter tracts making up the floor of the midbrain.
What do the cerebral peduncles carry information between?
They carry information between the cerebral cortex and the spinal cord (corticospinal fibres) and between the cortex and the pons (corticopontine).
What is the hindbrain made up of in a medial view?
Cerebellum, pons, medulla, fourth ventricle
What is the cerebellum?
A motor centre which co-ordinates movements.
What does the pons carry/contain?
Carries corticospinal fibres, and also contains nuclei of cranial nerves.
What does the medulla carry?
Corticospinal fibres e.g. the pyramids, cranial nerve nuclei and grey matter controlling breathing and the heart.
What are the ventricles of the brain?
What are the 4 major parts of the brain?
Brain stem, cerebellum, diencephalon, cerebrum
What does the brain stem consist of?
Medulla oblongata, pons, and midbrain
Where is the diencephalon situated with relation to the brain stem?
It is superior to the brain stem
What is the largest part of the brain?
What is the Exner's area for?
Controls hand movements for writing
What is the function of Broca's speech area?
Controls larynx and tongue for speech
What is the function of Wernicke's speech area?
Main processing centre for spoken language
What are the functions of the supramarginal and angular gyri?
Interprets visual symbols as written words.