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Nervous System 22-31
Multiple Sclerosis (MS) | disease of the CNS, which is characterized by varying degrees of injury and death of the myelin-making neuroglial cells (Oligodendrocytes) |
The loss of myelin leaves lesions that cause ___________________ to be lost. | nerve conduction |
MS is thought to be an ____________ disease. | autoimmune |
Is there a cure? | No, it can go into remission, but is usually chronic. |
The Brain has 4 Divisions: | 1) Cerebrum 2) Cerebellum 3) Brain Stem 4) Diencephalon |
Frontal lobe | - Speech - coordination of body parts involved in speech - Reasoning - Judgement - Emotional control - Personality |
Temporal lobe | - Sense Hearing & smell perception (ability to smell) - Speech Understanding written/spoken word - Memory - Echoic~short-term - Hippocampus~ long-term |
Parietal lobe | - Depth perception/Spatial recognition - Identifying shapes, sizes, colors - Distinguishing left from right - Sense of touch |
Insular Lobe | the sense of taste and smell are thought to be two of the functions |
Occipital lobe | - vision - Balance & Coordination |
Brain Stem: Medulla oblongata controls... | heart rate, blood pressure, and breathing |
Brain Stem: Midbrain controls... | relay for visual and auditory impulses. Location for dopamine-making cells |
Diencephalon: Hypothalamus | Homeostasis & Hormones; regulates body temperature, water balance, appetite (controls endocrine system) |
Diencephalon: Thalamus | All information from your body's senses (except smell) must be processed through your thalamus before being sent to your brain's cerebral cortex for interpretation. |
Diencephalon: Epithalamus | pineal gland is the main structure, which releases melatonin |