BIO 270 LECTURE EXAM 2 JMU HYND QUESTIONS AND CORRECT ANSWERS. VERIFIED 2025/2026.

BIO 270 LECTURE EXAM 2 JMU HYND
QUESTIONS AND CORRECT ANSWERS.
VERIFIED 2025/2026.




Astrocytes - ANS glue that holds neurons in place, helps maintain ionic concentration



Oligodendrocytes - ANS Myelin sheath of CNS



Microglia - ANS trashcans of brain, eat dead micro and neurons



ependymal - ANS lining of ventricles (brain)



schwann cells - ANS myelin sheath of PNS



Four types of glial cells - ANS astrocytes, oligodendrocytes, microglia, ependymal



blood brain barrier - ANS capillaries sealed with tight junctions to prevent bad stuff from
getting to the brain



parts of the forebrain - ANS diencephalon (thalamus and hypothalamus) and cerebrum (basal
nuclei and cerebral cortex)

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, gyrus - ANS elevated folds of brain



sulcus - ANS depressed fold of brain



Broca's area of brain - ANS speaking ability, motor



Wernicke's area of brain - ANS Language comprehension, sensory



plasticity - ANS brain's ability to have other areas compensate for any damage if the damage
happens young enough



electroencephalogram (alpha and beta rhythm) - ANS EEG (brain test). Alpha- eyes closed.
Beta- eyes open.



seizure - ANS uncontrolled firing of neruons



small movement control - ANS Basal nuclei/ganglia with thalamus



thalamus job - ANS gets rid of extra sensory info that is not necessary to know



cerebrum job - ANS coordinating big subconscious movements (balance, posture)



hypothalamus job - ANS controls homeostasis



limbic system - ANS emotion, food, and sex

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