cerebral spinal fluid (CSF) = clear fluid fill subarachnoid space acts as a shock absorber and helps with buoyancy
What is grey matter?
Cell bodies and dendrites
EG) cortex, basal, ganglia thalamus.
What is white matter?
myelinated axons
EG) Corpus Callosum
What is the function of the corpus callosum?
Connects the left and righthemispheres of the brain.
largestfibre bundle
"hard body"
What is the Ventricular system?
Network of fluid-filled cavities in the brain. which functions continuously, Between blood vessels and brain tissue.
X2 Lateral Ventricle-
3rd Ventricle-
4th Ventricle
What is the blood-brain barrier?
A semipermeable barrier
Lipids= pass through, soluble substance
bigger molecules cannot pass through, require active transport.
maintain stable environment and protect from potential disruption and damage
What is a frontal plane?
Coronal
parallel to forhead
What is a sagittal plane?
arrow / sideview
What is a horizontal plane?
Parallel to ground // top view
Label lobes and their functions
Frontal lobe: Move, Behav, Speech, Prob Solve
Parietal lobe: Intel, Lang, Sensation, Reason
Temporal: Lang, Mem, Hear, Emot
Occipital: Sight, Visrecept.
A) Frontal lobe
B) temporal lobe
C) brain stem
D) cerebellum
E) occipital lobe
F) parietal lobe
What are the grooves on the cortex called?
Sulci
What are the bulges on the cortex called?
Gyri
What divides the frontal and parietal lobe?
Centralsulcus
What divides the frontal and temporal lobe?
Lateralfistula
What do the primary areas of the brain do?
They receiveinfo from senses.
What do primary association arears do?
They are sensoryassociation arears which receive and analyse info from primeareas
Encephalon
The brain
What are the major brain structures?
A) prosencephalon
B) prosencephalon
C) telencephalon
D) diencephalon
E) cerebral cortex, basar ganglia, limbic system
F) thalamus, hypothalamus
G) tectum, tegmentum
H) mesencephalon
I) rhombencephalon
J) rhombencephalon
K) metencephalon
L) myelencephalon
M) cerebellum, pons
N) medulla oblongata
What does diencephalon consist of?
Thalamus- 2 lobes separated by massa intermedia. Receives and process info from the cortex. 2 nuclei: lateral geniculate, medial geniculate, ventrolateral
Hypothalamus- controls autonomous nervous system, connected to the pituitary gland.
Basal ganglia
In telencephalon, collection of nuclei which control movement, and reward systems. When lesions in BG= Parkinson's and Huntington's
A) caudate nucleus
B) putamen
C) globus pallidus
What is the limbicsystem?
Limbic cortex, associated with learning, memory and emotion. In the temporal lobe. Includes structures:
amygdala
hippocampus
fornix
and mammillatybodies
What is the mesencephalon?
Midbrain.
Includes Tectum- superior colliculi and inferior colliculi
Includes Tegmentum- which has a rectangular shape, periaqueductal grey matter and a red nucleus (LIN MOVE)
with a substantia nigra
What does the Rhombencephalon do?
It has two parts- metencephalon and myelencephalon.
Met= pons (bridge) work with sleep and arousal, relay information from the cortex to the cerebellum.
Cerebellum- involved with co-ordination of movement.
Myel= medulla oblongata- included with regulation of cardiovascular system, respiration and skeletal muscle tonus.