Internal Structures Flashcards Preview

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Flashcards in Internal Structures Deck (11):
1

Structures in the basal ganglia?

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

2

Function of the basal ganglia?

Initiation of movement and motor control.

3

Function of amygdala?

Emotional control, portion of the limbic system.

4

Structures in the limbic system?

Cortex, basal ganglia, hippocampus, amygdala, thalamus.

5

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

Area postrema.

6

Function of cerebrospinal fluid?

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

7

CSF is secreted by?

Choroid plexus.

8

Flow pattern of cerebrospinal fluid?

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

9

Describe obstructive/non-communicating hydrocephalus.

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

10

Describe communicating hydrocephalus.

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

11

Symptoms of hydrocephalus?

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