MCA Branches Quiz

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What is the term for the inability to recognize visually presented objects despite normal visual field acuity, color vision, brightness, and discrimination?

Contralateral homonymous hemianopia

Posterior circulation impairment

Visual agnosia (correct)

Medial temporal lobe damage

Which artery supplies the visual cortex and other structures of the visual pathway in the occipital lobe?

Calcarine artery (correct)

Anterior cerebral artery

Posterior cerebral artery

Middle cerebral artery

What is the primary function of the parahippocampus?

Spatial awareness

Language processing

Memory formation (correct)

Visual processing

Which of the following is NOT a characteristic of visual agnosia?

Impaired language processing Signup and view all the answers

What is the vascular territory involved in ischemia or reduced blood flow of the left occipital lobe?

Posterior circulation Signup and view all the answers

What is the term for the loss of vision in one half of the visual field, usually caused by damage to the contralateral optic tract or occipital lobe?

Homonymous hemianopia Signup and view all the answers

What is the name of the anatomical structure that connects the anterior and posterior circulations?

Circle of Willis Signup and view all the answers

Which branch of the MCA supplies the motor and sensory cortices of the whole body except the lower limb of the leg area?

Cortical branches of the MCA Superior/Upper/Suprasylvian Branches Signup and view all the answers

What is the main function of the Lateral Striate or Lenticulostriate Arteries?

Supplying the putamen, globus pallidus, and caudate nucleus Signup and view all the answers

Which artery is responsible for supplying the leg and foot areas?

Anterior Cerebral Artery Signup and view all the answers

What is the function of the corpus callosum?

Enabling the language-dominant hemisphere to direct its activities Signup and view all the answers

Which part of the brain is responsible for memory, emotions, and arousal?

Limbic system Signup and view all the answers

Which branch of the MCA supplies the inferior parietal and lateral temporal lobes?

Inferior/Lower/Infrasylvian Branches Signup and view all the answers

What is the term for the arteries that enter the anterior perforated substance with the medial striate artery?

Lateral Striate or Lenticulostriate Arteries Signup and view all the answers

What is the location of the Anterior Spinal Artery on the spinal cord?

Anterior surface of the medulla oblongata and the spinal cord Signup and view all the answers

Which artery is formed by the union of the two vertebral arteries?

Basilar Artery Signup and view all the answers

What is the destination of the Pontine Artery?

Substance of the pons Signup and view all the answers

What is the function of the Posterior Cerebral Artery?

Forms part of the Circle of Willis Signup and view all the answers

What is the origin of the Medullary Arteries?

Small branches distributed to the medulla oblongata Signup and view all the answers

What is the name of the artery that arises from the VA or PICA?

Posterior Spinal Artery Signup and view all the answers

What is the mnemonic for the branches of the Basilar Artery?

ALPS-P Signup and view all the answers

Which of the following arteries provides the main route for collateral blood flow in cases of carotid artery obstruction?

Anterior Communicating Artery Signup and view all the answers

What is the result when the pressure of the two blood streams coming together in the Posterior Communicating Artery are equal?

The blood streams do not mix Signup and view all the answers

What happens when one part of the Circle of Willis becomes blocked or one of the arteries supplying the circle is blocked or narrowed?

Blood flow from the other blood vessels can preserve the cerebral perfusion Signup and view all the answers

What is the function of the Anterior Communicating Artery and Posterior Communicating Artery of the Circle of Willis?

To provide the main route for collateral blood flow in cases of carotid artery obstruction Signup and view all the answers

What is the significance of the Circle of Willis in cerebral circulation?

It allows the blood to flow across the midline when the ICA or the Vertebral artery on one side is occluded Signup and view all the answers

What is true about the central branches within the substance of the brain?

They do not anastomose with each other Signup and view all the answers

What is the arrangement of the brain’s arteries that create collaterals in the cerebral circulation?

The Circle of Willis Signup and view all the answers

What is the primary region of the spinal cord supplied by the Anterior Spinal Artery?

Cervical part Signup and view all the answers

What is the origin of the Anterior Spinal Artery?

Union of the two branches of the vertebral artery Signup and view all the answers

What type of branches does the Anterior Spinal Artery give off within the spinal cord?

Sulcal branches Signup and view all the answers

What is the Great Anterior Medullary Artery a branch of?

Anterior spinal artery Signup and view all the answers

In which region does the Anterior Spinal Artery become smaller?

Thoracic region Signup and view all the answers

What type of arteries augment the Anterior Spinal Artery?

All of the above Signup and view all the answers

What is the consequence of occlusion of the Anterior Spinal Artery at the fourth thoracic and first lumbar segments?

Ischemic necrosis Signup and view all the answers

What is the location of the Great Anterior Medullary Artery?

Lumbar region Signup and view all the answers

What is the main function of the feeder arteries?

To augment the anterior spinal artery Signup and view all the answers

What is the course of the Anterior Spinal Artery in relation to the spinal cord?

Along the anterior median fissure Signup and view all the answers

What is the blood supply to the remaining one-third of the spinal cord?

Posterior spinal artery Signup and view all the answers