Monday, October 26 “C” Day Noncommunicable Diseases: What You Should Know.
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Transcript of Monday, October 26 “C” Day Noncommunicable Diseases: What You Should Know.
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1st 10/26
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3rd 10/26
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5th 10/26
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Monday, October 26 “C” Day
• Noncommunicable Diseases: What You Should Know
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Chapter 14Noncommunicable Diseases
Lesson 14.1 Noncommunicable Diseases: What You Should Know
Lesson 14.2 Diseases of the Blood Vessels and Heart
Lesson 14.3 Cancer: Cells Out of Control
Lesson 14.4 Diabetes, Allergies, Asthma, and Arthritis
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Noncommunicable Diseases: What You
Should Know
Lesson 14.1
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Warm-Up
Noncommunicable Diseases
What are some risk factors related to developing heart disease and cancer?
What are some steps you can take to avoid or manage these risk factors?
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Noncommunicable Disease and Homeostasis
• Noncommunicable diseases are those that cannot be spread through person-to-person contact
• When the body maintains homeostasis, the body is healthy
• If the body departs from homeostasis, it will enter a state of disease
shutterstock.com/Andresr
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Risk Factors
• Lifestyle choices and the environment are key areas that indicate a person’s risk factor for certain diseases
• Scientists have identified genes, especially mutated genes, that increase the risk for developing certain diseases
shutterstock.com/Kenneth Man
Click here for the Unit 5 video, “‘No Big Deal,’ or Is It?”
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Disease Characteristics
• Certain characteristics are associated with noncommunicable diseases
• Acute diseases occur suddenly and resolve fairly quickly
• Chronic illnesses may not heal for years and can cause permanent disability or health complications
shutterstock.com/Photographee.eu
A cold is an example of an acute disease.
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Disease Characteristics
• A prognosis is the probable outcome of a disease, including the duration and severity
• A relapse is a recurrence of a disease
• A complication is a new problem or related disease that arises
shutterstock.com/Monkey Business Images
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Think Further
Having a disease be in remission is the same as being cured of that disease.
MYTH– Fact: Remission is a time without signs and
symptoms of a disease, but the disease may still be present.
– Fact: Remission may last for weeks, years, or indefinitely.
Myth or Fact?
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Diagnosing Diseases
• A diagnosis identifies the type of disease a person has
• A diagnosis may involve– Physical exam– Personal and family history– Lab tests
• Once a diagnosis is clear, treatment can begin
shutterstock.com/Monkey Business Images
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Critical Thinking
Diagnosing Disease
Why is knowing about a person’s family history important for diagnosing diseases?
What are some noncommunicable diseases that members of your family have had?
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Think Further Review
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Tuesday, October 27 “A” Day
• Diseases of the Blood Vessels and Heart• Cancer: Cells out of control
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Diseases of the Blood Vessels and Heart
Lesson 14.2
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• b.socrative.com• Room 792228
Pre-Quiz
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Profile of Healthy Blood Vessels
• Blood vessels are narrow tubes that transport oxygen, blood, and nutrients throughout the body– Arteries carry blood from the heart to the capillaries– Capillaries deliver oxygen and nutrients to body tissues– Veins carry blood from the capillaries back to the heart
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Diseases of the Blood Vessels
• Arteriosclerosis causes arterial walls to thicken, harden, and become inflexible. Atherosclerosis describes fatty deposits in arterial walls
• These fatty deposits may block blood flow to vital organs
Click here for the “Progression of Atherosclerosis” animation
Body Scientific International, LLC.
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Hypertension
• Blood pressure is the force that blood exerts against the walls of arteries
• High blood pressure is called hypertension
• Hypertension causes problems in blood vessels and organs and sets the stage for a heart attack or stroke
shutterstock.com/Tyler Olson
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Think Further
What are the two parts of a blood pressure measurement called? What does each measure?
– Systolic pressure is the blood pressure that exists when the heart muscle is contracted.
– Diastolic pressure records the blood pressure when the heart muscle is relaxed between contractions.
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Stroke
• Stroke is a disease that occurs when the blood flow to a part of the brain is interrupted, injuring brain cells
• An ischemic stroke is the most common type
• A hemorrhagic stroke is less common
shutterstock.com/Monkey Business Images
Obesity and smoking are lifestyle risk factors for stroke.
http://safeshare.tv/v/ss562ed6eeb39a4
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Profile of a Healthy Heart
• The heart requires its own continuous supply of oxygen and nutrients
• These are delivered by blood vessels called coronary arteries
• These blood vessels are branches of the largest artery in the body, the aorta
Body Scientific International, LLC.
Click here for the “Blood Flow through the Heart” animation
http://safeshare.tv/v/ss562f887138e0d
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Diseases of the Heart
• Coronary artery disease occurs when the coronary arteries become narrow or blocked and reduce or stop blood flow to the heart muscle
• In congestive heart failure, the heart weakens due to strain and becomes unable to pump blood effectively
• Disorders of heart rhythm are called arrhythmias and can arise from abnormal communication within the heart muscle
• Several diseases can affect the heart valves and impact their performance
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Diagnosis and Treatment of Heart Disease
• Several tests can be done to help determine the nature of a heart disease
• Stents and bypass surgery can be used to treat blocked arteries
• Coronary artery disease can also be treated with medicine
shutterstock.com/Alexander Raths
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• b.socrative.com• Room 792228
Post-Quiz
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Thursday, October 29 “A” Day
• Cancer: Cells out of Control Notes• Computer Lab: Cancer Research
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Cancer: Cells out of Control
Lesson 14.3
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Characteristics of Cancer
• Cancer is a disease characterized by a mass of abnormally growing cells that spread and cause illness
• Benign tumors do not invade nearby tissue
• Malignant tumors invade the normal tissues and can metastasize
shutterstock.com/Designua
http://safeshare.tv/v/ss562ed42842335
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Risk Factors for Cancer
• Genetics is related to cancer
• A cell with faulty proto-oncogenes divides much more rapidly than surrounding cells
• A cell with faulty tumor-suppressor genes cannot stop cell division
shutterstock.com/Nuno Andre
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Risk Factors for Cancer
• Exposure to carcinogens increases the risk of cancer
• Certain carcinogens cause mutations in genes, leading to cancer– Asbestos – Ultraviolet radiation– Tobacco smoke
• Infectious microorganisms arelinked to certain cancers– Human papillomavirus (HPV)– Hepatitis B virus and hepatitis C
virus– HIV
shutterstock.com/DVARG
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Critical Thinking
Lifestyle Choices
What are some lifestyle choices people make that affect their risk of getting cancer?
thinkstock.com/Stockbyte/Stockbyte
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Common Cancers
• Skin cancer—caused by ultraviolet (UV) light that damages genes and triggers cancerous changes in skin cells
• Lung cancer—typically begins in the lungs and spreads to other organs
• Breast cancer—risk factors include genetics, age, and lifestyle choices
• Colon and rectal cancer—typically appears in people 50 years of age or older
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Cancer Treatment
• A combination of treatments is often more effective than any one treatment alone
• Possible treatments include– Surgery– Chemotherapy– Hormone therapy– Immune therapy– Radiation therapy
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Think Further
Many cancer patients are treated with chemotherapy. What are some of the possible side effects of chemotherapy?
– Weight loss– Hair loss– Nausea and diminished diet– Lowered resistance to infections– Bleeding
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Diabetes, Allergies, Asthma, and Arthritis
Lesson 14.4
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Diabetes
• Diabetes mellitus is a disease resulting from the body’s inability to regulate glucose (sugar)
• Type 1 diabetes mellitus (juvenile-onset) can be treated with insulin, strict diet management, and regular physical activity
• Treatment for type 2 diabetes mellitus (adult-onset) includes modifying the diet, managing weight, and taking medications
• Related long-term problems may include vision loss, kidney failure, and impaired nerve function
http://safeshare.tv/v/ss5632297ff3410
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Think Further
What are some risk factors for type 2 diabetes?
– A family history of diabetes– Advanced age– Obesity– A physically inactive lifestyle– High blood pressure– High cholesterol
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Allergies
• An allergy is an abnormal, destructive immune response with effects that can range from annoying to deadly
• An allergy is triggered by substances called allergens, such as dust or pollen
• Some allergies are restricted to specific organs, while other allergies affect the entire body
Click here for the “Allergic Reactions” animation
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Asthma
• Asthma is a chronic disease of the respiratory system in which the air passages constrict
• The environment and heredity play a role in the development of asthma
• Asthma cannot be cured, but medications can reduce the number and severity of attacks
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Arthritis
• Arthritis means inflammation of the joints
• Treatments include anti-inflammatory medicine, pain relievers, and mild exercise
• Osteoarthritis is caused by the wearing down of cartilage that normally pads the surfaces of bones
shutterstock.com/Catalin Petolea
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Rheumatoid Arthritis
• Rheumatoid arthritis is an autoimmune disease
• It causes the body’s immune system to attack the joints
• It occurs in adults of all ages and affects many joints, the eyes, and the heart
shutterstock.com/Rob Marmion
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Think Further
What is gout? What may cause gout?
– Gout is a type of arthritis that occurs in some aging adults.
– Gout can be caused by diets that are rich in purines (found in red meat, anchovies, and asparagus).
– Gout can also be triggered by consuming alcoholic beverages.