science- complete best module
TRANSCRIPT
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.