Science- COMPLETE best module

DRAFT

March 31, 2014

1

UNIT 1

Living Things and Their

Environment

Photo Credit: http://www.flyingfourchette.com/2013/05/25/around-ubud/

DRAFT

March 31, 2014

2

Respiratory and Circulatory SystemsWorking with Other Organ Systems

Overview 

Your body is a fascinating creation that can carry out incredible tasks and

activities. It is like a machine that is able to function with proper organization of parts

and systems. However, our bodies also require proper care and maintenance. It is just

fitting to keep going with a healthy lifestyle to ensure that each part is maintained

appropriately while getting the most out of it.

In the past, you were introduced to the different levels of organizations in the

human body and the mechanisms involved in it. You have learned that the human body

is composed of different systems, which are collections of cells, tissues, and organs,

each of which has a special job that keeps you alive. Whether you eat, play, dance,

sing, or sleep; each part of your organ systems performs particular functions. You also

discovered how the digestive system breaks down food to nourish your whole body.

Now, you will learn how the different structures of the circulatory and

respiratory systems work together to transport oxygen-rich blood and nutrients

to the different parts of the body. You will also understand the prevention,

detection, and treatment of diseases affecting the respiratory and circulatory

systems.

 At the end of this module, you are expected to:

1. explain the mechanism on how the respiratory and circulatory systems work

together to transport nutrients, gases, and molecules to and from the different

parts of the body;

2. infer how one’s lifestyle can affect the functioning of respiratory and

circulatory systems.

Respiratory system is made up of the organs in the body that help us to

breathe. Just remember that the word respiration  is linked to breathing. Circulatory

system  is responsible for distributing materials throughout the body.   Take note that

Unit 1

MODULE

1 

Suggested time allotment: 8 to 10 hours 

system  is responsible for distributing materials throughout the body.   Take note that

circulation means transportation or movement in circles. Both systems are essentially

meant for each other. The common purpose could not be attained without the other

system.

DRAFTMarch 31, 2014

3

In Module 1, you will be able to answer the following key questions:  

  How do the respiratory and circulatory systems work with each other?

  How do the diseases in the circulatory and respiratory systems begin to develop?

  How can a person’s lifestyle affect the performance of the respiratory andcirculatory systems?

Pre-assessment

Direction: Fill in the K-W-H-L Chart below to assess your prior knowledge and

understanding of the topic, Respiratory and Circulatory Systems, Working with the

other Organ Systems.

K  W  H  L What do I know?  What do I want to

find out? How can I find out

what I want to learn? What did I learn? 

Skills I expect to use:

The Human Breathing System

Breathe in and out. Notice your chest and belly moving and feel the soft air passing fromthe nose. Listen to the quiet sounds of breathing in and out. Imagine the air moving from thenose into the throat, through the air tubes, and into the airsacs. The parts of the respiratory

system that are in charge of supplying oxygen are the nose, nasal passageways, windpipe,lungs, and diaphragm. In the nose and nasal passages, the entering air is made warm, damp,and clean of unknown particles. Next, the air moves down through the trachea, bronchi,bronchioles, and alveoli. Trachea  is the empty tube that serves as passageway of air into thelungs. Bronchi are the two branching tubes that connect the trachea to the lungs. Bronchioles are the hairlike tubes that connect to the alveoli. Alveoli  are the airsacs that allow gasexchange in the lungs.

Perform the following simple activity to widen your understanding of the humanbreathing system.