CLASS RULES: B e Engaged O bserve Silence D o your best! Y ou always come prepared.
REVIEW
WIKARAMBULAN! Wikarambulan is a sound like game. By saying/pronouncing and connecting the Word, reveal some of the diseases related to the respiratory system. For example. A nest tea HONESTY
US MAY ASTHMA
KNEW MOON YEAH PNEUMONIA
BRAWN KITE TEAS BRONCHITIS
PRE-ACTIVITY PUMP IT!
MATERIALS balloon red food coloring jar water Scissors straws (x2) Tape
PROCEDURE
1. Cut the neck of the balloon where the balloon starts to widen.
2. Fill a jar halfway with water and add 3 drops of red food coloring.
3. Stretch the balloon top over the jar. Keep stretching the balloon to make sure it is lays flat across the mouth of the jar.
4. Use scissors to carefully snip two small holes into the balloon, about 1 inch away from each other. Make sure each hole is big to fit the width of the straw, but small enough so that the balloon is tight around the straw, preventing the air from escaping between the straw and the balloon.
GUIDE QUESTIONS: What particular organ does the model represent? What does the water inside the jar represent? What have you observe as you pump the middle of the balloon?
The Circulatory System
What is shown in the picture?
Circulatory System The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce. It is an amazing highway that travels through your entire body connecting all your body cells.
The circulatory system carries two types of blood Arrangement of the circulatory system means that these two types of blood do not mix. Oxygenated blood c Deoxygenated blood Contains Oxygen & Nutrients Bright red Found in arteries H/L to Body Contains Carbon Dioxide and waste Dark Red Found in veins Body to H/L Circulatory System
The heart is the organ at the centre of the circulatory system. It pumps blood around the body. Circulatory System
How does the heart pump blood? The heart can pump blood because it is made of muscle. Muscle tissue works by contracting (squeezing) and relaxing .
Blood Vessels As blood moves through the circulatory system it moves through 3 types of blood vessels: Arteries: Carry blood away from the heart . Capillaries: Link arterioles to veins. Veins: Carry blood towards the heart
Arteries Large vessels Carry blood from heart to tissues of body. Carry oxygen rich blood, with the exception of pulmonary arteries. Thick walls-need to withstand pressure produced when heart pushes blood into them. Smallest blood vessels Walls are only one cell thick and very narrow. Important for bringing nutrients and oxygen to tissues and absorbing CO 2 and other waste products . Capillaries Blood Vessels
Veins Once blood has passed through the capillary systems it must be returned to the heart. Done by veins Carries deoxygenated blood excluding pulmonary vein Carry blood back to the heart
Blood Composed of plasma and blood cells Types of Cells are: Red Blood Cells ( Erythrocytes) White Blood Cells(Leukocytes) Platelets Plasma Straw colored 90% water 10% dissolved gases, salts, nutrients, enzymes, hormones, wastes, and proteins.
Blood Red Blood Cells (ERYTHROCYTES) Most numerous type Transport oxygen Get color from hemoglobin Disk shaped Made in red bone marrow Circulate for 120 days
White Blood Cells (LEUKOCYTES) Guard against infection, fight parasites, and attack bacteria Number of WBC’s increases when body is fighting Lymphocytes produce antibodies which fight pathogens and remember them Blood Platelets Aid the body in clotting Small fragments Stick to edges of broken blood cell and secrete clotting factor to help form clot.
Blood Blood has 3 main Functions Transport Protection Temperature Regulation Plasma Red Blood Cells Platelets White Blood Cells
LET’S SUM IT UP!
ACTIVITY 1: CONCEPT MAP
ACTIVITY 2: TRUE OR FALSE
Our city is like our body’s circulatory system. Roads become the veins and arteries. Vehicles are blood cells.