2. Body systems are groups
of organs and tissues that
work together to perform
important jobs for the
body.
3.
4. Respiratory System- Facilitates gas
exchange between cells and the
environment.
Digestive System- Ingests food and
breaks it down into usable nutrients before
excreting solid waste products.
5. Circulatory System- is responsible for
the transport of materials through the
body.
Urinary system - extracts and
excretes dissolved waste products
from the blood.
Urinary system - extracts and
excretes dissolved waste products
from the blood.
6. Endocrine System- secretes
chemical signals that allow body
systems to respond to environmental
changes and to one another .
Nervous system- allows us to
perceive and respond to the world
around us. This also includes our
emotions and personality.
7. Skeletal system - works as a support
structure for your body. It gives the body
its shape, allows movement, makes blood
cells, provides protection for organs and
stores minerals.
Muscular System-responsible for
the movement of the human body.
8. Integumentary System- These systems
cover the body and regulate its exchange
with the outside world.
Lymphatic System/Immune System-
system is responsible for absorbing fat from
the digestive system, maintaining fluid balance,
and supporting the cells of the immune system.
15. Parts of Respiratory System
OSEN-Nose
NSAAL PSSAAEGWYAS-
Nasal passageways
PAHYRNX-Pharynx
LRAYNX-Larynx
TARHAEA-Trachea
LNUGS-Lungs
DAIHPARGM-Diaphragm
16. 1. Nose and mouth-
Openings that pull air from
outside your body into your
respiratory system.
PARTS OF
RESPIRATORY SYSTEM
17. PARTS OF
RESPIRATORY SYSTEM
2. Nasal Passages-Hollow
areas between the bones in your head
that help regulate the temperature and
humidity of the air you inhale.
18. 3. Pharynx (throat)-Tube
that delivers air from your
mouth and nose to the
trachea (windpipe).
PARTS OF
RESPIRATORY SYSTEM
19. 3. Larynx (voicebox)-t's a
hollow tube that lets air pass
from your throat (pharynx) to
your trachea on the way to your
lungs
PARTS OF
RESPIRATORY SYSTEM
23. 7. Alveoli -are the air
sacs that allow gas
exchange in the lungs.
PARTS OF
RESPIRATORY SYSTEM
24.
25. 8. Lungs-Two organs that
remove oxygen from the air
and pass it into your blood.
PARTS OF
RESPIRATORY SYSTEM
26. 9. Diaphragm- Muscle that
helps your lungs pull in
air and push it out.
PARTS OF
RESPIRATORY SYSTEM
27. Identify the parts of the lungs represented by
the model.
1.Plastic bottle- rib cage
2.Balloons( inside the jar)- lungs
3.Straw ( inside the jar)- bronchi
4.Balloon( on the lower surface of the jar)-
diaphragm
5.Straw ( on top of the jar)- trachea
28. When you breathe in or inhale, the diaphragm
muscle contracts. Inhaling moves the diaphragm
down and expands the chest cavity.
Simultaneously, the ribs move up and increase
the size of the chest cavity. There is now more
space and less air pressure inside the lungs. Air
pushes in from the outside where there is higher
air pressure. It pushes into the lungs where there
is lower air pressure. pushes the air outside where
there is lower air pressure.
Mechanism of the Lungs and the Diaphragm
29. When you breathe out or exhale,
the diaphragm muscle relaxes. The
diaphragm and ribs return to their
original place. The chest cavity
returns to its original size. There is
now less space and greater pressure
inside the lungs. It
Mechanism of the Lungs and the Diaphragm
Editor's Notes
Respiratory system is the important system on the body. Without oxygen to fuel cellular respiration, cells begin to die within minutes. This is the primary reason that heart attacks are deadly. Although the heart is part of the circulatory system, not the respiratory system, it is responsible for transporting oxygen from the lungs to our cells.
The digestive system takes in food and processes it to obtain useful nutrients that the body can use for fuel.
Enzymes help speed up chemical reactions in the human body.
Urinary system-main organs-kidney and bladder
Endocrine glands - It includes hormone-producing tissues of the pineal gland and pituitary gland in the brain; the thyroid gland; the adrenal glands; the pancreas; and the ovaries, and testes.
Fight or flight response -the adrenal glands secrete a flood of adrenaline.
Hungry or full-ghrelin
Where Does Air Go?
Air enters the respiratory system through the nose or the mouth, then travels down a pathway to the lungs. In the nostrils, air gets filtered. Tiny hairs in the nose called cilia (SIL-ee-uh) filter out dust and other particles.
In nasal passages we have the MUCUS where it traps the bacteria and other particles to make the air clean, warm and moistened.
The nasal cavity and mouth join at the area in the back of the throat called the pharynx . The pharynx is part of two body systems (the respiratory system and the digestive system) because it carries both air and food.
At the bottom of the pharynx, two pipes split off — one for air and one for food.
One pipe, the larynx, is for air only. It’s also called the voice box because it contains a pair of vocal cords that vibrate to make sounds when you talk. (The other pipe is called the esophagus and is the pathway that brings food to the stomach.) A small flap of tissue called the epiglottis (eh-pih-GLAH-tus) protects the larynx. When we swallow, the epiglottis covers the larynx to prevent food and liquid from going into the lungs.
The trachea (windpipe) is the part of the airway that continues below the larynx (LAIR-inks). The walls of the trachea (TRAY-kee-uh) have stiff rings of cartilage to keep it open. The trachea is also lined with cilia, which sweep fluids and foreign particles out of the airway to keep them out of the lungs.
Further down, the trachea divides into two tubes (left and right) called bronchi (BRAHN-kye). The bronchi connect the trachea to the lungs.
What Happens at the Lungs?
The bronchi branch off into smaller bronchi and even smaller tubes called bronchioles (BRAHN-kee-olz).
At the end of each bronchiole are tiny air sacs called alveoli. This is the place where the exchange of oxygen and carbon dioxide actually happens. Each person has hundreds of millions of alveoli in their lungs. This network of alveoli, bronchioles, and bronchi is known as the bronchial tree.
The lungs contain elastic tissue so they can inflate and deflate easily. They're covered by a thin lining called the pleura (PLUR-uh). The thorax (THOR-aks) is the airtight box that houses the bronchial tree, lungs, heart, and other structures. The top and sides of the thorax are formed by the ribs and muscles. These chest walls form a protective cage around the organs in the chest cavity. The bottom of the chest cavity is formed by the diaphragm.
