Circulatory SystemFunction and PartsMr. Norman J. Manuba Jr.

Circulatory SystemPELC VI 1.1.1Into the Future Science and Health 6Values: Keep the parts of the circulatory system healthy.Skills/Processes: describing identifying, observing

Preparatory Activities:Daily routineWeather NewsTrivia: The part of the human brain that has no blood flow:

Answer: Cornea

The human brain has more water than blood. 20% blood, 80% water.

DrillIdentify the missing letters to complete the word in the box. The railroad trackA fantastic pumpThe river of lifeThe transport system of the body

LD

VSSLS

HRT

BLD

CCLTR

SSM

Recall:

What happens to the food we eat?Where does the digested food go?How can these food elements reach up the tips of our hair down to the tip of our toe nails?

Motivation:Look at the picture.

Activity Proper:Watch the video about the circulatory system and jot down answers for the following questions:

PartsDescriptionFunction1. Heart2. Blood3. Blood Vessels

CIRCULATORY SYSTEM

PartsDescriptionFunction1. HeartHollow muscular organPumps the blood to different parts of the body2. BloodLiquid materia that circulates through the bodyCarries nutrients to the cells and collects wastes materials from the cells for excretion3. Blood VesselsTube-like structurePassageway of blood

Post activity:Reporting of the groups about their experiences and learning.Drill Material will be revisited if their answers are correct.

Analysis and Discussion:What is the major role of the heart as organ of the Circulatory System?

Generalization:The heart, blood and blood vessels are major components of the circulatory system. Blood is the liquid material that circulates throughout the body. It carries the nutrients to the cells. The blood delivers oxygen to the tissues. The blood also collects all wastes products from cells and brings them to the excretory system and other organ excretion.the blood moves through the blood vessels. The blood vessels are tube-like structures that differ in thickness and size. The thickest vessels are the arteries, next in size are veins, the smallest are capillaries. The heart pumps the blood to the different parts of the body. The hearts pumping action provides force. This force enables the blood to move from the heart to all parts of the body.

Application:

Why do we need to take a rest if we are tired?What do organ is very much affected?

Valuing:

What shall we do after doing vigorous activity?

Evaluation:Choose the letter of the correct answer.Which is the pumping organ of the blood circulation?Blood B. HeartC. Blood vessels D. Arteries2. Why does the heart has to pump blood?To provide the necessary force for the blood to move from the lower to the upper part of the body.To collect all the body wastes from the body cells.To exchange the necessary nutrientsBoth B and C

3. Which of the major parts of the circulatory system served as the passageway of blood?A. Blood B. Heart C. Blood Vessels D. System4. Which is known as the river of life?A. Heart B. Blood C. Blood Vessels D. Arteries5. If the heart cannot normally pump blood what will happen to the human body?Waste materials are collected.Nutrients are exchanged in capilliaries.The body becomes ill.Human body removes wastes through excretion.

key:

BACBC

Assignment:

In pupils notebook, draw the circulatory system and label the major parts.

End

CharacteristicsIt connects all parts of an organism in a way that allows individual cells to thrive as well as for organisms to function as a unitIt is an entirely closed system

FunctionTransport materials needed by cellsOxygenGlucoseRemove waste materials from cellsCarbon dioxideurea

Major ComponentsPump (heart) Continuously circulates bloodNetwork of tubesArteries- blood away from heartVeins- blood back to the heartBloodFluid that fills the circulatory system

Specific partsPulmonary arteries- transport blood to lungsPulmonary veins- transport oxygenated blood to hearAortic arch and trunk- main arteries from heartCommon carotid artery- carries blood to brainRenal vein and artery- connects to kidneysMesenteric veins- connects to intestine

Accessory OrgansLungs- organ where oxygen is taken up and CO2 is releasedKidneys- organ where wastes are removed from blood; critical in regulating fluids in the bodySmall intestine- digestionLarge intestine- water absorption

The HeartThe human heart has four chambersLeft and right ventricleLeft and right atriumThe left side of the heart pumps oxygenated blood to the body while the right side of the heart pumps deoxygenated blood to the lungs where oxygen can be absorbed by the hemoglobin carrying red blood cells

From lungsAfter passing through the capillaries of the lungs, the blood which is now oxygenated returns to the heart in the pulmonary veins.

The left atrium receives blood from the pulmonary vein.

Blood passes through the mitral valve into the left ventricle.

To rest of bodyContraction of the left ventricle pushes blood through the aortic semilunar valve into the aorta. Blood travels to all regions of the body where it feeds cells with oxygen picked up from the lungs and nutrients from the digestive tract.

Deoxygenated blood returns from the rest of the body through the superior and inferior vena cava.

The right atrium receives the deoxygenated blood.

Blood then enters the right ventricle through the tricuspid valve.

To lungsContraction of the right ventricle pushes blood through the pulmonary semilunar valve into the pulmonary arteries in which it travels to the lungs.

Blood PressureBlood pressure is a measure of the force exerted by the blood on the wall of the arteries.An example is 120/80 (systolic pressure/diastolic pressure.Systolic pressure is the result of the contraction of the ventricles (normal 110-140)Diastolic pressure is during the ventricle relaxation (normal 70-90)