External and Internal Anatomy of the Brain (Lab Week 1) Flashcards Preview

Block 5: Neuroscience > External and Internal Anatomy of the Brain (Lab Week 1) > Flashcards

Flashcards in External and Internal Anatomy of the Brain (Lab Week 1) Deck (17):
1


CNS


Brain: brainstem, cerebellum, cerebrum/forebrain

Spinal cord

2


Brainstem


Medulla oblongata

Pons

Midbrain (mesencephalon)

3


Cerebrum


(aka forebrain, aka from prosencephalon?)

Diencephalon: thalamus, hypothalamus, related regions

Telencephalon (aka cerebral hemispheres): cerebral cortex, basal ganglia, hippocampus, amygdala, related regions

4


Three primary brain vesicles that develop


Forebrain/prosencephalon --> telencephalon, diencephalon

Midbrain/mesencephalon --> mesencephalon

Hindbrain/rhombencephalon --> metencephalon, myelencephalon

5


Layers surrounding the brain


Inner meninges: arachnoid, pia

Dura mater

6


4 lobes of cerebral hemisphere


Frontal

Parietal

Temporal

Occipital

7


Bulges and depressions on the external surface of the brain


Bulges: gyri

Depressions: sulci

8


Corpus callosum


Large white matter tract that connects left and right hemispheres

9


Ventricles of the brain


2 lateral ventricles

Third ventricle

Fourth ventricle

10


Lateral ventricles


Cavities that persist within cerebral hemispheres during development

Each lateral ventricle can be divided into sections: anterior horn, body, posterior horn, inferior horn (temporal horn)

Communicate with third ventricle via the interventricular foramen (foramen of Monro)

11


Communication between all ventricles


Lateral ventricles to third ventricle via interventricular foramen (foramen of Monro)

Third ventricle with fourth ventricle via cerebral aqueduct

Fourth ventricle to subarachnoid space to venous sinuses and reabsorbed into systemic circulation

12


Gray matter


Brain regions with high concentrations of neuronal cell bodies

Identified broadly as brain nuclei or cortex

13


White matter


Consists primarily of axons of neurons and myelin covering (myelin has high lipid content)

14


What does the basal ganglia contain?


Caudate nucleus

Lenticular nucleus (putamen and globus pallidus)

15


Precentral gyrus


In frontal lobe

Primary motor cortex

16


Postcentral gyrus


In parietal lobe

Somatosensory cortex

17


What structure surrounds the third ventricle?


The hypothalamus

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