Heart, Blood, Lymph,Respiration Life Science

Parts of the Heart Right and left sides are opposite of hands on paper. Right and left sides are opposite of hands on paper. Right side Right side Oxygen poor blood Oxygen poor blood Left side Left side Oxygen rich blood Oxygen rich blood 4 chambers 4 chambers Atria: top Atria: top Ventricles: bottom Ventricles: bottom

Heart Valves Between atria and ventricles Between atria and ventricles Where arteries attach to heart Where arteries attach to heart Make blood flow in the correct direction. Make blood flow in the correct direction. Make sounds as they open and close to let blood through. Make sounds as they open and close to let blood through. “lub-dub” sound in heart beat “lub-dub” sound in heart beat A heart murmur is when the valves do not close all the way. A heart murmur is when the valves do not close all the way.

Heart Problems Atherosclerosis Atherosclerosis Blocked, narrow, “hard” arteries Blocked, narrow, “hard” arteries High cholesterol High cholesterol High Blood Pressure High Blood Pressure Systolic/Diastolic Systolic/Diastolic Contract/Relax (normal: 120/80) Contract/Relax (normal: 120/80) Too much pressure in arteries Too much pressure in arteries Risk for stroke, organ failure Risk for stroke, organ failure Heart Attack Heart Attack Part of heart muscle is damaged, dies Part of heart muscle is damaged, dies Heart Failure Heart Failure Heart is not efficient enough to provide for the body, damages other organs. Heart is not efficient enough to provide for the body, damages other organs.

Path of a Red Blood Cell: 1. Veins, capillaries 2. Vena Cava (superior, inferior) 3. Right Atrium 4. Right Ventricle 5. Pulmonary Arteries 6. Lungs 7. Pulmonary Veins 8. Left Atrium 9. Left Ventricle 10. Aorta 11. Arteries, capillaries in head, arms, torso, legs

Animations Heart Anatomy Heart Anatomy Heart Anatomy Heart Anatomy Blood flow through the heart Blood flow through the heart Blood flow through the heart Blood flow through the heart System at work System at work System at work System at work

Blood Plasma Plasma Fluid Fluid Mixture of water, minerals, nutrients, sugar, proteins, RBC, platelets, WBC Mixture of water, minerals, nutrients, sugar, proteins, RBC, platelets, WBC Red Blood Cells Red Blood Cells Have hemoglobin (iron compound, makes blood red) Have hemoglobin (iron compound, makes blood red) Hemoglobin carries oxygen Hemoglobin carries oxygen Anemia: lack of iron in blood resulting in a lack of oxygen Anemia: lack of iron in blood resulting in a lack of oxygen Platelets Platelets Cell fragments of large cells in marrow Cell fragments of large cells in marrow Clump together when you bleed Clump together when you bleed Form fibers that create blood clots Form fibers that create blood clots White Blood Cells White Blood Cells Fight infection Fight infection

Fun Facts Your heart is about the same size as your fist. Your heart is about the same size as your fist. An average adult body contains about five quarts of blood. An average adult body contains about five quarts of blood. All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth. All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth. The heart circulates the body's blood supply about 1,000 times each day. The heart circulates the body's blood supply about 1,000 times each day. The heart pumps the equivalent of 5,000 to 6,000 quarts of blood each day. The heart pumps the equivalent of 5,000 to 6,000 quarts of blood each day.

Lymphatic System Organs that collect extracellular fluid and return it to the blood. Organs that collect extracellular fluid and return it to the blood. Has it’s own vessels with valves. Has it’s own vessels with valves. Lymph: fluid that is collected from the body Lymph: fluid that is collected from the body

Lymphatic Organs Bone Marrow: makes lymphocytes (killer T cells, B cells,) Bone Marrow: makes lymphocytes (killer T cells, B cells,) Lymph Node: filter lymph Lymph Node: filter lymph Swell when you are sick Swell when you are sick Thymus Thymus Where killer T cells mature (boot camp) Where killer T cells mature (boot camp) Spleen Spleen Stores and produces lymphocytes Stores and produces lymphocytes Gets rid of old/damaged red blood cells Gets rid of old/damaged red blood cells Tonsils Tonsils Back of throat Back of throat Stores lymphocytes Stores lymphocytes

Respiratory System Respiration Respiration Part 1: Breathing Part 1: Breathing Oxygen in, carbon dioxide out. Oxygen in, carbon dioxide out. Part 2: Cellular Respiration Part 2: Cellular Respiration Release energy (glucose) from food Release energy (glucose) from food

Respiratory Disorders Asthma Asthma Bronchioles narrow during attack Bronchioles narrow during attack Emphysema Emphysema Alveoli damaged Alveoli damaged SARS SARS Severe Acute Respiratory Syndrome Severe Acute Respiratory Syndrome Virus Virus

Path of an Oxygen Molecule: 1. Nose, mouth 2. Pharynx (throat) 3. Larynx (voice box) 4. Trachea (windpipe) 5. Bronchial Tubes (bronchi, bronchus) 6. Bronchioles 7. Alveoli 8. Capillaries 9. Blood stream