Lesson Notes By Weeks and Term - Senior Secondary 2

Systems of the body: Circulatory system

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TERM – 1ST TERM

WEEK TWO

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: HEALTH EDUCATION

Topic: SYSTEMS OF THE BODY: CIRCULATORY SYSTEM

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Describe the circulatory system

II.) Identify the functions of the circulatory system

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher introduces and explains the concept circulatory system.

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher identify and describe the functions of the circulatory system

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

SYSTEMS OF THE BODY: CIRCULATORY SYSTEM

The circulatory system, also known as the cardiovascular system, is a network of organs and vessels responsible for transporting blood, oxygen, nutrients, hormones, and waste products throughout the body. It consists of the heart, blood vessels (arteries, veins, and capillaries), and blood.

The heart acts as the pump that drives blood circulation, pumping oxygen-rich blood to the body's tissues via arteries and receiving oxygen-depleted blood back from the tissues via veins. Arteries carry oxygenated blood away from the heart to the body, while veins return deoxygenated blood back to the heart. Capillaries, the smallest blood vessels, facilitate the exchange of oxygen, nutrients, and waste products between the blood and tissues.

Functions of circulatory system

The circulatory system performs several essential functions in the body:

  1. It transports oxygen, nutrients, hormones, and waste products to and from cells throughout the body.
  2. The circulatory system distributes heat generated by metabolic processes, helping to regulate body temperature.
  3. It transports immune cells, antibodies, and other components of the immune system to sites of infection, injury, or inflammation, helping to fight pathogens and heal damaged tissues.
  4. The circulatory system helps maintain fluid balance in the body by regulating the distribution of water and electrolytes between blood and tissues.
  5. Hormones released by various glands, such as the pituitary gland and adrenal glands, are transported through the bloodstream to target organs and tissues, where they regulate various physiological processes, including metabolism, growth, and reproduction.
  6. Metabolic waste products, such as carbon dioxide and urea, are transported by the circulatory system to organs responsible for their excretion, such as the lungs and kidneys, for elimination from the body.
  7. The circulatory system facilitates the exchange of oxygen and carbon dioxide between the blood and tissues through the process of respiration.

 

EVALUATION: 1. Identify and describe 5 functions of the circulatory system

  1. Mention the 4 organs for circulation and how they work.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively