Question

midbrain
a relatively small part of the brain stem, the midbrain extends from the mammillary bodies to the pons inferiorly. the (1 ) aqueduct, a tiny canal that travels through the midbrain, connects the third ventricle of the diencephalon to the fourth ventricle below. anteriorly, the (2 ) is composed primarily of two bulging fiber tracts, the cerebral peduncles (pedun kiz) (literally, \little feet of the cerebrum\), which convey ascending and descending impulses. dorsally located are four rounded protrusions called the (3 ) quadrigemina (korpor - ah kwah\dri - jemt - nah) because they reminded some anatomist of two pairs of twins (geminì). these bulging nuclei are reflex centers involved with vision and hearing.
pons the pons (ponz) is the rounded structure that protrudes just below the (4 ). pons means \bridge,\ and this area of the brain stem is mostly fiber tracts (bundles of nerve fibers in the cns). however, it does have important (5 ) involved in the control of breathing.

1 cerebral 2 midbrain 3 corpora 4 midbrain 5 nuclei

1 nuclei 2 cerebral 3 midbrain 4 corpora 5 midbrain

1 midbrain 2 corpora 3 midbrain 4 nuclei 5 cerebral

1 midbrain 2 nuclei 3 cerebral 4 midbrain 5 corpora

1 corpora 2 midbrain 3 nuclei 4 cerebral 5 midbrain

Explanation:

1. The canal through the mid - brain connecting ventricles is the cerebral aqueduct.
2. The anterior part composed of fiber tracts is the cerebral peduncles.
3. The dorsal rounded protrusions involved in vision and hearing are the corpora quadrigemina.
4. The pons is below the mid - brain.
5. The pons has important nuclei involved in breathing control.

Answer:

1. cerebral 2. midbrain 3. corpora 4. midbrain 5. nuclei