Brainstem Flashcards
Which parts of the brain make up the brainstem?
Medulla oblongata, pons, midbrain, diencephalon
The medulla is between which parts of the CNS
Pons and spinal cord
Which furrow separates pons and medulla oblongata?
Pontomedullary sulcus
The medulla has an anterior median fissure that is continuous with that of the spinal cord. The anterior median fissure of the medulla separates which swellings?
Pyramids
The fibers of the pyramids
Corticospinal fibers
The boundaries of the pyramid
Anterior median sulcus, anterolateral sulcus
Which structures do the anterolateral sulci separate from the pyramids?
Olive
The boundaries of the olive
Anterolateral sulcus, medially
Posterolateral sulcus, laterally
Structures that connect the medulla to the cerabellum
Inferior cerebellar peduncles
Which cranial nerves arise from the groove between the olive and inferior cerebellar peduncle?
IX, V, cranial roots of XI
The posterior part of the medulla forms the floor of which structure?
Fourth ventricle
The posterior median sulcus of the medulla is continuous with that of the spinal cord. T/F
T
Which structures lie on each side of the posterior median sulcus?
Gracile tubercle
Which structure lies lateral to the gracile tubercle?
Cuneate tubercle
Which statement is FALSE regarding the overall architecture of the brainstem?
A. Sensory nuclei of cranial nerves and sensory tracts generally lie dorsolaterally.
B. The base of the brainstem contains the pyramidal tracts
C. Motor nuclei of cranial nerves lie within the tegmentum
D. The reticular formation begins in the pons and ends in the midbrain
D