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Questions and Answers
Which cranial nerve is not attached to the brain stem?
Which cranial nerve is not attached to the brain stem?
- Olfactory nerve (correct)
- Abducent nerve
- Facial nerve
- Vagus nerve
What forms the lower part of the floor of the 4th ventricle?
What forms the lower part of the floor of the 4th ventricle?
- Medulla Oblongata (correct)
- Cerebellum
- Midbrain
- Pons
The dorsal surface of which structure forms the upper part of the floor of the 4th ventricle?
The dorsal surface of which structure forms the upper part of the floor of the 4th ventricle?
- Medulla
- Pons (correct)
- Midbrain
- Cerebellum
The facial colliculus is formed by which combination of structures?
The facial colliculus is formed by which combination of structures?
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In which part of the brain stem does the midbrain lie?
In which part of the brain stem does the midbrain lie?
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Study Notes
Brain Stem
- The brainstem connects the cerebrum and cerebellum to the spinal cord.
- It is composed of the medulla oblongata, pons, and midbrain.
Medulla Oblongata
- The medulla oblongata is the lowermost portion of the brainstem.
- Forms the lower part of the floor of the fourth ventricle.
- It lies in front of the cerebellum.
Pons
- The pons is the middle portion of the brainstem.
- The dorsal surface of the pons forms the upper part of the floor of the fourth ventricle.
Midbrain
- The midbrain is the uppermost portion of the brainstem.
- The anterior surface of the brain stem.
- The posterior surface of the brain stem.
Cranial Nerves
- The olfactory nerve is not attached to the brain stem.
Facial Colliculus
- The facial colliculus is formed by the facial nerve and the abducent nucleus.
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Description
Explore the intricate structures and functions of the brain stem in this quiz. Learn about the medulla oblongata, pons, and midbrain, as well as cranial nerves and related components. Test your knowledge of how these parts connect and their roles in the nervous system.
