NAME OF THE TEACHER : ROSHNI.C
NAME OF THE SCHOOL :
SUBJECT : BIOLOGY
UNIT : CIRCULATORY PATHWAYS
LESSON : STRUCTURE OF HUMAN
HEART
CLASS : IX
DIVISION :
STRENGTH :
DURATION : 45 minutes
Develops different dimension of knowledge, attitude and process skills on structure of heart through lecture method, lecture cum demonstration, group discussion, evaluation by questioning and participation in practical work

TERMS
FACTS
Pericardium, Atrium, Ventricle, Aorta, Venecava, Bicuspid,
Tricuspid, Pulmonary Artery.
1. Circulatory System involves heart, blood and blood vessels
2. Heart is purely a muscular organ
3. Pericardium is a double layered membrane enclosing heart
4. Heart has four chambers
5. The four chambers of the heart are upper left and right auricle and lower left and right ventricle
6. Right atrium opens to the right ventricle
7. Left atrium opens to the left ventricle.
8. The blood vessels that bring blood to the heart are the veins
9. The blood vessels that take blood away from the heart are the arteries.
10.The two major veins opening into the right atrium are superior venecava and inferior venecava
11.Pulmonary artery carries impure blood from right ventricle to lungs
12.Purified blood from lungs is brought back to the left auricle by pulmonary vein.

MINOR CONCEPT
MAJOR CONCEPT
LEARNING OUTCOME
1. The heart is a hollow fibromuscular organ, some what conical in shape with it s broad base towards upwards and the pointed end towards downwards.
2. The pericardial fluid that fills the space between membranes protects the heart from mechanical injury and helps it to functions smoothly as it keeps the heart wall and the surrounding tissues when the heart beats.
3. The upper right auricle opens into the lower right ventricle through a valve of three flaps known as tricuspid valve.
4. The upper left auricle opens into the lower left ventricle through a valve of two flaps known as bicuspid valve
5. The chambers present on the left side of heart are filled with oxygenated blood and the chambers present on right side are filled with deoxygenated blood.
Heart is a major part of circulatory system that is mainly responsible for the transport of nutrients.
Enables pupil to develop
-factual knowledge on structure of heart through
(i) recalling new terms like pulmonary artery, pulmonary vein, auricle, atrium, ventricle etc and facts and concepts

mentioned in the content analysis
(ii) recognizing the location of the heart in the human body
(iii) Explaining different parts of heart.
-conceptual knowledge on structure of heart
(i) recalling different parts of heart
(ii) recognizing different parts and their functions
(iii) explaining structure and function of heart
(iv) comparing functions of different parts of heart
-procedural knowledge on structure of heart
(i) differentiating different parts of heart and their functions and peculiarities
(ii)understanding parts, peculiarities and functions of heart
-metacognitive knowledge on structure of heart
(i) recognizing different parts of heart
(ii) understanding the importance of different parts of heart.
-scientific attitude towards structure of heart
(i) knowing more and more about peculiarities of different parts of heart
(ii) collecting more information about the role of heart in circulation

PRE REQUISITES
TEACHING LEARNING RESOUCES
INTRODUCTION
1. What do you do when you are sick?
2. Who treats you when you are sick?
3. What does doctor do when he uses a Stethescope?
4. Do you know what is meant by heart?
Heart is the centre of the circulatory system
• Picture showing position of heart in the human body
• Pictures showing structure of heart
• Videos explaining general aspects of heart and structure of heart
REFERENCES
SCERT TEXT BOOK FOR STANDARD IX
TEACHERS HANDBOOK
You take medicines
The Doctor
The doctor checks your heart beat
An organ in our body
To pump blood

5. Why does the heart beat?
Today we shall learn about the human heart and its structure
PRESENTATION
Teacher shows a video clip describing structure of heart
Video explaining heart basics.mp4
Teacher also shows a diagram showing heart located in the human body

Discussion points
1.Where in the human body is heart located?
2.What is the shape of human heart?
3.What is the size of heart?
4. What is the name of covering of heart?
5. How many chambers are there for the heart?
CONSOLIDATION
1. Heart is located between the lungs with an inclination to the left
2. Heart is conical in shape
1.Between the lungs with an inclination to the left
2.Conical
3. Size of the persons fist
4. Pericardium
5 Four

3. It will have the size of person’s fist
4. The covering of the heart is the pericardium
5. The heart has four chambers
ACTIVITY 2
Teacher shows a video showing the structure of heart. Students are asked to observe the video carefully and find answers to discussion points video explaining structure of heart.mp4

Discussion points
1.Which blood vessel carries blood away from heart to various parts of body?
2.Which blood vessel carries blood towards lungs?
3.Which is the only artery that carries impure blood?
4. Which blood vessel carries pure blood from lungs to heart?
1. Aorta
2. Pulmonary artery
3. Pulmonary artery
4. Pulmonary vein

Consolidation
Aorta is the vessel that carries blood away from heart to body systems
Pulmonary artery carries blood towards the lungs
Pulmonary artery is the only artery that carries impure blood
Pulmonary vein carries blood towards the heart from lungs
QUESTIONS
REVIEW
What is the shape of heart?
Where is the heart located?
Which is the protective covering of the heart?
Which blood vessel carries blood from heart to various body parts?
Which is the only artery in the human body that carries impure blood?
Which is the only vein that carries pure blood?
Which is the top right chamber of the heart?

ACTIVITY Students are given paper cuttings containing unlabelled diagram of heart and asked to label parts
FOLLOW-UP-ACTIVITY
Prepare a report on the significance of heart in the human body

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