Brain Flashcards
1
Q
Which cranial fossae house what parts of the brain?
A
- Anterior fossa = frontal lobe
- Middle fossa = temporal lobe
- Posterior fossa = cerebellum
2
Q
Main sutures of the skull in adulthood (and which bones they join)
A
- Coronal suture (frontal to parietals)
- Sagittal suture (parietal to parietal)
- Lambdoid suture (occipital to parietals)
3
Q
2 types of folds of the brain
A
- Sulcus (depression)
- Gyrus (ridge between 2 sulci)
4
Q
Main sulci of the brain (and what they separate)
A
- Longitudinal fissure (2 hemispheres)
- Central sulcus (frontal from parietal)
- Lateral sulcus (frontal + parietal from temporal)
- Parieto-occipital sulcus (parietal from occipital)
5
Q
2 divisions of the diencephalon
A
- Thalamus
- Hypothalamus
6
Q
What is the corpus callosum?
A
- Biggest white matter structure of the brain
- Connects 2 hemispheres of brain allowing communication
7
Q
Components of brain stem
A
- Midbrain
- Pons
- Medulla
8
Q
Ventricles of the brain
A
- Lateral ventricles
- Third ventricle
- Fourth ventricle
9
Q
Location of the ventricles
A
- LVs = in respective hemispheres
- TV = in between right and left thalamus
- FV = in brainstem at junction between pons and medulla
10
Q
How does CSF travel from lateral ventricles to third ventricle?
A
Through foramen of Monro (interventricular foramen)
11
Q
How does CSF travel from third to fourth ventricle?
A
Through cerebral aqueduct
12
Q
Where does CSF go from fourth ventricle?
A
- Central spinal canal
- Subarachnoid space
13
Q
3 layers of meninges
A
- Dura mater
- Arachnoid mater
- Pia mater
14
Q
2 layers of dura mater and where they are present
A
- Periosteal layer (lines bones of cranium - only in cranial cavity)
- Meningeal layer (deep to periosteal layer, in cranial cavity and vertebral column)
15
Q
What is the cauda equina?
A
- Formed of L2-5 and S1-5 pairs, and coccygeal nerve
- Nerves travel through vertebral column as spinal cord ends around L1 height
