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BIO 227 EXAM 4 QUESTIONS AND VERIFIED ANSWERS..

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BIO 227 EXAM 4 QUESTIONS AND VERIFIED ANSWERS

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BIO 227
Course
BIO 227

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What is 1/8 of the brains mass?


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the cerebrum




Midbrain contains what


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Corpora Quadrigemina, Cerebral Peduncles, Cerebral Aqueduct, Red
Nucleus.




Primary visual area

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interprets shape, color, and movement




Golgi Tendon Reflex


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(results in relaxation of the muscle)
- polysynaptic reflex (with 3 neurons and more than 1 synapse)




Astrocytes


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Star cells, founded within the CNS, most abundant and most versatile glial
cell of CNS, form blood-brain barrier along with blood vessels
endothelium, around pia mater, around neurons.




Bipolar


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rods and cones of the retina of the eye, inner ear and olfactory area. Two
processes.

,Hypothalamus functions


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- controls and integrates ANS
(regulates heart rate, movement of food, contraction of urinary bladder)
- involved in reception & integration of sensory impulses from the viscera
- intermediary between nervous system and the endocrine system [makes
releasing hormones, ADH, and
oxytocin]
- center for mind-over-body phenomena
- associated with feelings of rage, pleasure, aggression, pain, reproductive
behavior, .....
- controls normal body temp. [thermostat]
- regulates food intake [feeding or hunger center and
the satiety or fullness center]
- thirst center
- one center that maintains waking state and sleep patterns
- pacemaker to many biological rhythms




ataxia


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lack of muscle coordination




Motor neuron


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, efferent neuron




Language areas


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translation of speech or written words into thoughts. Bocas area or motor
speech area, wernickes area .




Myelin sheath


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multilayered, white, phospholipid




Axon (axis cylinder)


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BIO 227
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BIO 227

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