Overview of the nervous system Flashcards
Which structures comprise the brainstem?
Midbrain, pons and medulla oblongata
What structures are found in the grey matter on the outside of the brain?
- Huge numbers of neurons
- Cell processes
- Synapses
- Support cells
What structures are found in the white matter on the inside of the brain?
Axons (mostly myelinated) and their support cells
What are the three deep grey matter structures located deep in the cerebral hemispheres?
- Caudate nucleus
- Thalamus
- Putamen
What structure is the arrow pointing to?

Precentral gyrus
What structure is the arrow pointing to?

The central sulcus
What structure is the arrow pointing to?

The postcentral gyrus
What structure is the arrow pointing to?

Lateral fissure
(Or Sylvian fissure)
Which structure is the arrow pointing to?

Cingulate sulcus
Which structure is the arrow pointing to?

Cingulate gyrus
Which structure is the arrow pointing to?

Midbrain
Which structure is the arrow pointing to?

Pons
Which structure is the arrow pointing to?

Medulla
Which structure is the arrow pointing to?

Parieto-occipital sulcus
Which structure is the arrow pointing to?

Calcarine sulcus
Which structure is the arrow pointing to?

Cerebellum
Which structure is the arrow pointing to?

Hypothalamus
Which structure is the arrow pointing to?

Thalamus
Which structure is the arrow pointing to?

Fornix
Which structure is the arrow pointing to?

Interthalamic adhesion
Which structure is the arrow pointing to?

Pinneal gland
Which structure is the arrow pointing to?

4th ventricle
Which structure is the arrow pointing to?

Central canal
What functions is the frontal lobe responsible for?
- Judgement and personality
- Motor function - planning and carrying out movement
Which structure is the bos surrounding?
Where is it found?

Insular lobe
Hidden deep in the lateral fissure
What functions is the insular lobe responsible for?
- Pain reception
- Emotion
- Olfaction
What are all the arrows pointing to?


Which structure is the arrow pointing to?

Internal capsule
Which structure is the arrow pointing to?

Putamen
Which structure is the arrow pointing to?

Globus pallidus
Which structures comprise the lentiform nucleus?
- Globus pallidus
- Putamen
Which structure is the arrow pointing to?

Corpus callosum
Which structure is the arrow pointing to?

Thalamus
Which structure is the arrow pointing to?

Interthalamic adhesion
Which structure is the arrow pointing to?

3rd ventricle
What are arcuate fibres?
Numerous short bundles of fibres which connect adjacent gyri
Which structure lies between the external capsule and the extreme capsule?
Claustrum
Where do the fibres of the corona radiata radiate from?
The internal capsule
What structure is the arrow pointing to?

Tail of the caudate nucleus
What structure is the arrow pointing to?

Fornix
What structure is the arrow pointing to?

Cingulum
What structure is the arrow pointing to?

Superior longitudinal fasciculus
What structure is the arrow pointing to?

Claustrum
What structure is the arrow pointing to?

External capsule
What structure is the arrow pointing to?

Extreme capsule
What is the function of the superior longitudinal fasciculus?
Fibres run anterior to posterior, relatively laterally, and connect the frontal lobes with parts of the parietal, temporal and occipital lobes.
NOTE - fibres do not necessarily run from one end to the other; fibres are joining and leaving along most of the length of the tract.
What is the cingulum and what does it do?
Long, longitudinal bundle near the midline.
Connects the temporal lobe, cingulate gyrus and septal area.
What is the corpus callosum?
- Largest white matter structure in the brain.
- ~250 million axons.
- Main connection between right and left hemispheres.
What is the anterior commissure and what does it do?
- A bundle of axons found posterior to the rostrum of the corpus callosum.
- Provides additional communication between parts of the right and left temporal lobe.
Which structure is the arrow pointing to?

Anterior commissure
What is the internal capsule and what does it do?
- White matter structure
- Large bundle of axons
- Connects the cortex with the brainstem and spinal cord
- Provides a connection for intermediary structures (example - between the thalamus and the cortex)
What are the parts of the internal capsule?
- Anterior limb
- Genu
- Posterior limb
- Retrolentiform part
Identify each part of the internal capsule.

From top to bottom:
- Anterior limb
- Genu
- Posterior limb
- Retrolentiform part
Identify the structure indicated by the arrows.

Corona radiata
What produces the myelin sheath?
Schwann cells
Where do somatic sensory neurons reside?
In a dorsal root ganglion
(Or the trigeminal ganglion for the head)
What is the specific function of the cerebellum?
Coordination of movement
What is the specific function of the thalamus?
Acts as a relay station for sensory information coming from the periphery and going to the cortex.
What is housed in the brainstem?
Most of the cells associated with the cranial nerves
Identify areas 4 and 6

4 - Primary motor area
6 - Premotor area
Identify area 17

Primary visual area
Identify area 43

Taste area
Identify area 41

Primary auditory area
Identift the pink area

Frontal eye field
Identify area 34

Uncus
Identify area 28

Olfactory cortex
Identify area 17

Primary visual area