Nitrogen, Oxygen, others
The atmosphere is composed of ______________, ____________, and _____________.
78%, 21%, 1%
The atmosphere is made of _____ Nitrogen, _____ Oxygen, and _____ others.
Oxygen is really important to life because animals need oxygen to __________ ______.
Breathing or Ventilation
______________ is the movement of air between the external environment and the body.
Ventilation happens across a ______________ ______________. (separate the inside of the body to external environment)
Breathing, External Respiration, Internal Respiration, Cellular Respiration
The four types of respiration is ______________, ______________ ______________, ______________ ______________, and ______________ ______________.
______________ is the process by which air enters and leaves the lungs.
______________ ______________ takes place in the lungs and involves the exchange of Oxygen and Carbon Dioxide molecules between the air and the blood.
______________ ______________ takes place within the body and involves the exchange of Oxygen and Carbon Dioxide molecules between the blood and tissue fluids.
______________ ______________ involves the production of ATP in body cells.
nasal cavity, mouth, pharynx, larynx, trachea, lungs, bronchi, bronchioles, alveoli, diaphragm
Parts of the respiratory system include: _______ _________, __________, ____________ (voice box), ____________, ____________, ____________, ______________, ___________, ______________ (air sacs), and ______________.
__________ __________ : Filters, warms and moistens air.
Mucus, odor receptors
Nasal cavity contains __________ and _________ ________________.
____________ traps foreign particles and keeps cell lining moist.
________ ______________ in the nasal cavity help us smell.
The ______________ is the air filled channel at the back of the mouth. (Throat)
Two openings branch off from the pharynx, the ___________, and the ______________.
The ______________ is also called the voice box.
The ______________ is a cartilaginous structure that allows air to pass from the pharynx to the trachea.
The Larynx contains _________ _________; ligaments.
Vibrate, produce sound
The vocal cords are flexible, pliable bands of connective tissue that __________ and ___________ __________ when air is expelled past them.
The ______________ is a flap like structure that covers the top of the trachea.
The ______________ is a flexible tube that receives air. And is permanently opened by a ring of cartilage.
The trachea branches off into two ______________, one enter each lung.
______________ keeps the lungs clean by sweeping mucus, produced by goblet cells, back to the pharynx.
The ______________ are paired tubes that branches into even more tubes.
After the trachea, the ______________ is also opened by a ring of cartilage.
Branching off from the bronchus, ______________ this structure passes air to the alveoli.
______________ are air sacs for gas exchange.
Alveoli is around _________ ______________ in diameter.
Each alveolus is surrounded by ______________.
______________ are where oxygen and carbon dioxide diffuse in and out of.
Oxygen diffuse into the ____________ because of the high concentration of Oxygen in the ___________.
Carbon dioxide diffuse into the ______ because of the high concentration of Carbon dioxide in the ______.
Breathing movements are dependent on: ___________________ ____________.
Pressure, chest cavity
Breathing movements are dependent on: _____________ in the ____________ ____________.
High pressure, low pressure
Gas moves from an area of _______ _____________ to an area of ________ ______________.
The diaphragm is ____________ sheet of muscle.
The diaphragm separates the ____________ ____________ from abdominal cavity.
The diaphragm separates the thoraic cavity from ____________ ____________.
The diaphragm regulates ____________ in the chest cavity.
Inspiration, Contracts, decreases
During ____________: diaphragm ____________ (muscle shortens) pulls downward, chest cavity volume increases, pressure in lungs ____________, air moves into lungs.
Expiration, Decreases, out of
During ____________ diaphragm relaxes (muscle lengthens), pushes up (dome shaped), chest cavity volume ____________, pressure in lungs increases, air moves ______ ______ lungs.
____________ ____________ are bands of muscles found between the ribs.
Intercostal muscles ____________ to help move ribs up during ____________. (increases volume of chest, lowers pressure in the chest cavity.
Intercostal muscles ____________ to let rib cage fall during ____________. (decrease volume of chest, pushes air out.