Internal Structures Flashcards

1
Q

Structures in the basal ganglia?

A

Caudate, putamen, globus pallidus, substantia nigra, subthalamic nuclei.

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2
Q

Function of the basal ganglia?

A

Initiation of movement and motor control.

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3
Q

Function of amygdala?

A

Emotional control, portion of the limbic system.

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4
Q

Structures in the limbic system?

A

Cortex, basal ganglia, hippocampus, amygdala, thalamus.

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5
Q

What portion of the brain lacks the BBB to initiate the vomiting reflex?

A

Area postrema.

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6
Q

Function of cerebrospinal fluid?

A

Maintain constant external environment for cells, brain buoyancy, mechanical cushion, brain lymphatic system.

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7
Q

CSF is secreted by?

A

Choroid plexus.

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8
Q

Flow pattern of cerebrospinal fluid?

A

Lateral ventricle, interventricualr foramen, third ventricle, cerebral aqueduct, fourth ventricle, foramen of Magendie (medial) or Luschka (lateral), subarachnoid space, arachnoid villi, venous system.

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9
Q

Describe obstructive/non-communicating hydrocephalus.

A

Physical obstruction (like a toomah) that blocks ventricular flow. Absorption in the arachnoid villi is normal. Most likely to happen at the cerebral aqueduct.

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10
Q

Describe communicating hydrocephalus.

A

Arachnoid villi are diseased and prevent absorption into the venous system. Ventricular flow is preserved.

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11
Q

Symptoms of hydrocephalus?

A

Papilledema (increased cranial pressure), headache, nausea, cognitive problems, decreased consciousness, impaired vision, magnetic gait, incotinence.

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