Lecture 20: Structure and layout of major brain areas, and basic motor + sensory pathways Flashcards
Which layer of the meninges contains circulating cerebrospinal fluid?
- Arachnoid
Which structure is important for removal of old/used CSF?
- Arachnoid granulations
Gyrus = ? Sulcus = ?
- Hills
- Valleys
The four lobes:
- Frontal
- Parietal
- Occipital
- Temporal
The central sulcus is located between the _____ and the _____ lobe.
- Frontal
- Parietal
The sulcus located between the parietal and occipital lobe is called the….
- Parieto-occipital sulcus
The lateral sulcus is found between the _______ lobes and the _____ lobe.
- Frontal + Parietal
- Temporal
The transverse fissure lies underneath the _____ lobe.
- Temporal
The __ - ____ gyrus is located before the central sulcus.
- Pre-central
The occipital lobe is concerned with mainly _____ functions.
- Visual
The parietal lobe is concerned mainly with _____ functions.
- Sensory
The temporal lobe is concerned with mainly _____ and ______.
- Memory
- Hearing
The posterior part of the frontal lobe primarily concerns itself with ______ functions.
- Motor
The anterior part of the frontal lobe primarily concerns itself with ….. and is called the __-___ cortex. This is the most immature part of our brain, because it is the last place where myelination takes place. _____ can damage it.
- Decision making
- Emotion
- Anticipating consequences
- Mental illnesses
- Pre-frontal cortex
- Alcohol
The primary motor cortex is located in the __-____ ____.
Execution of movement occurs here.
- Pre-central gyrus
Planning of movement is what happens in the __-___ ____ which is located in the _____ part of the ______ lobe.
- Pre-motor cortex
- Posterior
- Frontal
The cerebrum is made up of the _____ cortex and the _____ callosum.
- Cerebral
- Corpus
The hypothalamus is involved in _______ functions.
- Homeostatic
The Diencephalon is made up of the _____ and ______.
- Thalamus
- Hypothalamus
The brain is made up of the….
- Cerebrum
- Diencephalon
- Midbrain
- Pons
- Medulla oblongata
- Cerebellum
The brainstem is made up of three things:
- Midbrain
- Pons
- Medulla Oblongata
Where the _____ _____ ends, the spinal cord starts.
- Medulla Oblongata
Cranial nerves can be found in the ____ and ____ ____ (the hindbrain).
- Pons
- Medulla Oblongata
You can find the fourth ventricle behind the ______.
- Cerebellum
Fruit + nut bread is similar to a ……
- Coronal slice of the brain
The cerebral cortex (outer layer) is made up of _____ matter.
- Grey
Why is white matter white?
- They’re myelinated, fat appears white
The deep nuclei are a collection of ____ ____.
- Cell bodies
There are ____ lateral ventricles.
- Two
There are three types of white matter (tracts):
Give examples
- Commissural tracts (side to side) eg. Corpus Callosum
- Projection tracts (axons extend between cortex + other CNS areas) eg. Corticospinal tracts
- Association tracts (stay on same side, communication between brain areas) eg. Motor Cortex Somatosensory Cortex
Cell bodies found in the medial primary motor cortex causes movement in the _____. Damage here will cause paralysis.
- Lower extremities
Sensory information occurs in the ___-____ gyrus.
- Post-central
For sensory information there are ___ neurons:
- 3
- Dorsal root ganglion
- Medulla oblongata
- Thalamus
Integration between motor + sensory
- Motor cortex initiates movement
- Copy of movement info sent to cerebellum
- Some sensory info sent to cerebellum to make sure info matches up
- /finish
