System of the body and its functions
Body systems are groups of organs and tissues that work together to perform important jobs for the body. Some organs may be part of more than one body system if they serve more than one function. Other organs and tissues serve a purpose in only one body system.
Table of Contents
- Respiratory System
Allows gas exchange between cells and the environment. Includes trachea and lungs. The respiratory system brings air into the body and removes carbon dioxide. It includes the nose, trachea, and lungs. When you breathe in, air enters your nose or mouth and goes down a long tube called the trachea. The trachea branches into two bronchial tubes, or primary bronchi, which go to the lungs
- Digestive System/Excretory System
Ingests food and breaks it down into usable nutrients. Excretes solid waste products. Includes the mouth, esophagus, stomach, and intestines
- Cardiovascular/Circulatory System
Moves materials between body systems, including oxygen, nutrients, hormones, and waste products. Includes the heart, arteries, and veins.
- Muscular system
The muscular system is made up of tissues that work with the skeletal system to control movement of the body. Some muscles—like the ones in your arms and legs—are voluntary, meaning that you decide when to move them. Other muscles, like the ones in your stomach, heart, intestines and other organs, are involuntary.
- Skeletal system
Allows the body to move on command. The skeletal system is made up of bones, ligaments and tendons. It shapes the body and protects organs. The skeletal system works with the muscular system to help the body move. Marrow, which is soft, fatty tissue that produces red blood cells, many white blood cells, and other immune system cells, is found inside bones
FUNCTIONS OF CIRCULATORY SYSTEM
Circulatory system:
- Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
- Keeps the body’s temperature in a safe range.
FUNCTIONS OF THE RESPIRATORY SYSTEM
Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
Strategies & Activities:
Step: Teacher revises the previous topic.
Step 2: Teacher introduces the new topic.
Step3: Teacher explains the new topic.
Step4: Teacher welcomes pupils’ questions.
Step5: Teacher evaluates the pupils.
Assessment & Evaluation:
- Say the meaning of the system of the body.
- List the system of the body.
- Draw and label the respiratory and circulatory systems.
- Explains the functions of the respiratory and circulatory system
Assignment:
- Explains the meaning of the system of the body.
- Name five systems of the body.
- Explains the respiratory of the body.
- Draw the circulatory system and label
- List three functions each of respiratory and circulatory system of the body.
See also
MEANING OF HEAT AND TEMPERATURE
MEANING OF HEAT AND TEMPERATURE
MEANING AND IMPORTANCE OF ENERGY CONVERSION