TEAS science

• The respiratory system is responsible for taking in oxygen from the environment and releasing carbon dioxide.
• The structure of the respiratory system includes the nose, mouth, throat, larynx, trachea, bronchi, and lungs.
• The nose is the external opening of the respiratory system.
• The nostrils lead into the nasal cavity, which is divided into two sections by the septum.
• The mouth and throat are also part of the respiratory system.
• The throat, or pharynx, is a tube that starts behind the nose and goes down to the esophagus.
• The larynx, or voice box, is located at the top of the trachea.
• The trachea, or windpipe, is a tube that goes from the larynx to the bronchi.
• The bronchi are the two main tubes that lead from the trachea to the lungs.
• The bronchioles are the smaller tubes that branch off from the bronchi and lead to the alveoli.
• The alveoli are tiny sacs where gas exchange takes place.
• These are small, single-cell structures that group together in clusters like grapes.
• The right lung is divided into three sections, while the left lung is divided into two sections.
• The left lung allows for more space to house the heart.
• Carbon dioxide is blown off to neutralize the acidic gas.
• The respiratory system is responsible for taking in oxygen and releasing carbon dioxide.
• When you breathe in, or inhale, your diaphragm contracts and moves downward, increasing the volume of your thoracic cavity and decreasing the pressure inside of it.
• Oxygen is pulled in from the atmospheric air as well as other elements.
• Oxygen passes from the alveoli into the blood.
• As a result, air flows into your lungs.
• As a result of ventilation, air flows out of your lungs.
• Carbon dioxide is released from the alveoli into the lungs, a process known as ventilation.
• When the blood becomes too acidic, the respiratory system kicks in to remove the excess acid.
• The respiratory system is responsible for maintaining the pH of the blood.
• When you breathe out, or exhale, your diaphragm relaxes and moves upward, decreasing the volume of your thoracic cavity and increasing the pressure inside of it.
• People may experience shortness of breath, wheezing, and difficulty breathing.
• Diseases, such as pneumonia, bronchitis, and asthma, can all cause problems with breathing.
• Asthma is a common condition that causes the airways to narrow.
• Mucus buildup can occur making it difficult to inhale and exhale.
• Poor air quality can irritate the lungs and cause problems with breathing.
• Pollution and dust can affect the respiratory system.
• Allergies and inflammation can also play a role in the respiratory system.
• If you have allergies, your airways may be inflamed, which can make it difficult to breathe.
• Smoking cigarettes is also a major factor that can damage the respiratory system.
• Cigarette smoke contains a number of harmful chemicals that can damage the lungs and airways.
• The cardiovascular system consists of the heart, blood vessels, and blood.
• The heart is a muscular organ that pumps blood throughout the body.
• The heart has four chambers: the right atrium, left atrium, right ventricle, and left ventricle.
• The right atrium and left ventricle are on the right side of the heart, while the left atrium and right ventricle are on the left side.
• The septum is a wall that separates the right and left sides of the heart.