Respiratory+System+DB

Respiratory System

(1) What is the purpose of the respiratory system? The respiratory system brings oxygen to the blood so that the blood can carry it to all parts of the body. It also rids the body of carbon dioxide.

(2) Describe the path of air from the nose to the lungs. Air enters the body through the nose. It then goes into the larynx and glottis. It then goes into then the trachea. It moves into the chest where the trachea splits into two bronchi. The bronchi split again into bronchial tubes and from the bronchial tubes the air goes straight into the lungs. In the lungs it ends up in tiny sacs called alveoli.

(3) Which organs are part of the upper respiratory tract and what is the function of each organ? The upper respiratory system is made up of the Pharynx and the larynx. The pharynx is the throat and it carries air coming from the nasal cavity and mouth. The larynx helps a person to speak and it carries air from the pharynx to the trachea.

(4) Several organs have connections with the pharynx. What are they? The pharynx connects with the larynx, the trachea and the epiglottis. The larynx is the voice bon and the the trachea is the windpipe. The epiglotis keeps food and liquids out of the windpipe.

(5) What two pathways cross in the pharynx? Why is it correct to say they cross? The respirtory system and digestive system cross at the pharynx. The organ gets air from the nose and mouth which it sends into the larynx. It gets food and water from the mouth which it sends across into the esophagus.

(6) What organs are part of the lower respiratory tract? What are the the functions of each organ? The trachea is the windpipe, and it is the air way to the lungs, connecting the nose and mouth to them. The bronchi are air passages that connect the trachea to the bronchioles. They are covered in mucus membranes that clean the air moving into the lungs. The bronchioles connect to the bronchi and move air in and out of the alveoli. The alveoli air tiny sacs in the lungs that perform gas exchange. Oxygen and carbon dioxide pass through the thin walls of the alveoli.

(7) Which organ of the respiratory tract functions in gas exchange? The alveoli

(8) What are some common infections and disorders of the upper respiratory tract? A sinus infection is a common infection of the upper respiratory tract. Mucus builds up in the organs.

(9) What are some common infections and disorders of the lower respiratory tract? Bronchitis is often times causes by cigarette smoking, air pollution and infection. It is an inflammation of the air passages of the lungs with symptoms such as excessive coughing and mucus buildup.

(10) What are the three respiratory disorders commonly associated with smoking tobacco? Bronchitis, Emphysema and Lung Cancer.