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HOMEOSTASIS.pptx
- 4. FEEDBACK MECHANISM - Increases the change, which means there will be more of a product or a moving away from a target point - Decreases the change, which means there will be less of a product or an action that moves towards a target point. Positive Feedback Negative Feedback Examples: a. Milk Production b. Blood Clotting c. Labor Contractions Examples: a. Temperature Regulation b. Controlled Blood Glucose Level c. Regulated Blood Pressure
- 5. NERVOUS SYSTEM DISORDERS 1. HEADACHES are one of the most common neurological disorders and can affect anyone at any age.
- 6. 2. EPILEPSY is a common disorder of the central nervous system involving abnormal electrical activity in the brain that makes you more susceptible to having recurrent, unprovoked seizures.
- 7. 3. STROKE - A stroke is usually due to a lack of blood flow to the brain, oftentimes caused by a clot or blockage in an artery.
- 8. 4.AMYOTROPHIC LATERAL SCLEROSIS - ALS, also known as Lou Gehrig’s disease, is a somewhat rare neuromuscular condition that affects the nerve cells in the brain and spinal cord.
- 9. 5. Alzheimer’s disease and dementia Memory loss is a common complaint, especially in older adults. A certain degree of memory loss is a normal part of aging. Dementia is a slowly progressive condition and should be evaluated by a neurologist.
- 10. 6. PARKINSON’S DISEASE - is a progressive nervous system disorder that primarily affects coordination.
Notes de l'éditeur
- In order to maintain a stable internal environment, the body has to be provided with what it needs to survive;oxygen,nutrients,and waste removal… ASK: How is it possible? This means all the organ systems have to collectively work together to maintain homeostasis, constantly adjusting to changes. (refer to Module, p. 13 – 14) When one organ do its function..one organ is affected therefore has to respond to the action ..this process is known as FEEDBACK MECHANISM…same in endocrine system and reproductive system …nervous system has its own FEEDBACK MECHANISM which also affect the function of the other organ…
- What will happen if the mechanisms or processes in an organ system such as in the nervous system is not properly regulated ? ANS: the balance or homeostasis will not be achieve therefore might cause or trigger some disorder.. What common disorder or diseases of the nervous system do you know?
- The nervous system is a complex, highly specialized network. From sight to smell and walking to speaking, our nervous system organizes, explains and connects us to the world around us…When something goes wrong with a part of the nervous system, however, it can cause a neurological disorder. Neurological disorders affect millions of people each year, yet many people may be unaware they have one.
- “Unprovoked means the seizure cannot be explained by exposure to or withdrawal from drugs or alcohol, as well as not due to other medical issues such as severe electrolyte abnormalities or very high blood sugar,”