The Respiratory System

1
The Respiratory System

• Gaining oxygen from the environment while riding
  the body of water and carbon dioxide

2
Breathing vs. Respiration

• Breathing is the movement of air into and out of
  the lungs.
• Respiration is the releasing of energy through
  chemical reactions that act on oxygen and glucose
  inside cells.

3
Nose

• The nose is where air enters into the nostrils.
  The nose is lined with cilia and mucus.

4
Cilia

• Cilia traps particles of dirt and dust from the
  air. The cilia filters the air we breathe.

5
Mucus

• Mucus warms and moistens the air that enters the
  body. Mucus is present in the nasal cavity and
  other locations throughout the body.

6
Pharynx

• Another term for the throat, which is the
  passageway that air enters through the nose.
• Food also enters via the pharynx.

7
Trachea

• A tube made of cartilage that leads from the
  pharynx toward the lungs.

8
Cartilage Rings

• Rings around the trachea that strengthen the
  trachea and keep it open.

9
Bronchi

• Branches that lead from the trachea into the
  lungs. Bronchi passageways get smaller and
  smaller until they reach the alveoli. The right
  and left bronchi lead to each lung part of them
  are inside and part are outside of the lungs.

10
Alveoli

• Alveoli are tiny sacs of lung tissue that allow
  oxygen to pass into the blood and carbon dioxide
  to pass out of the blood.

11
Lungs

• The main organs of the respiratory system.
  Inside the lungs are passageways called bronchi
  which direct air into the lungs.

12
Diaphragm

• The diaphragm is a large arched muscle that moves
  downward when inhaling to allow more air in, and
  moves upward when exhaling to push more air out.

13
Epiglottis

• The epiglottis is a flap of tissue that seals off
  the windpipe to prevent food from entering into
  the airways.

14
Larynx

• The larynx is the voce box of the body it is
  located in the top of the trachea under the
  epiglottis.

15
Vocal Chords

• The vocal chords are folds of connective tissue
  that stretch across the larynx (voice box) to
  produce a persons voice.