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Questions and Answers
Which artery is an unpaired structure in the brain?
Which artery is an unpaired structure in the brain?
Which of the following arteries is NOT an unpaired structure in the brain?
Which of the following arteries is NOT an unpaired structure in the brain?
Which unpaired artery in the brain is formed by the junction of the two vertebral arteries?
Which unpaired artery in the brain is formed by the junction of the two vertebral arteries?
Which of the following is a paired artery in the brain?
Which of the following is a paired artery in the brain?
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Which artery is NOT a paired structure in the brain?
Which artery is NOT a paired structure in the brain?
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Study Notes
Unpaired Structures in the Brain
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Basilar Artery
- Formed by the confluence of the two vertebral arteries.
- Supplies blood to the brainstem, cerebellum, and posterior part of the cerebral hemispheres.
- Located at the base of the brain, it bifurcates into the posterior cerebral arteries.
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Vertebral Artery
- Arises from the subclavian arteries and ascends through the cervical spine.
- Supplies blood to the posterior part of the brain and the spinal cord.
- Contributes to the formation of the basilar artery.
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Anterior Cerebral Artery
- Branch of the internal carotid artery, supplies the frontal lobes and medial surfaces of the cerebral hemispheres.
- Responsible for motor and sensory functions of the lower limbs and feet.
- Connects with the opposite anterior cerebral artery via the anterior communicating artery.
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Middle Cerebral Artery
- Largest branch of the internal carotid artery, courses laterally to supply the lateral surfaces of the cerebral hemispheres.
- Provides blood to areas involved in motor and sensory functions of the face and upper limbs.
- Plays a key role in language in the dominant hemisphere and is often affected by ischemic strokes.
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Description
This quiz tests your knowledge of unpaired structures in the brain, including major arteries. Choose the correct answer from the options provided.
