RESPIRATORY SYSTEM. 1. Label the following parts of the respiratory system:

Transcription

1 RSPIRTORY SYSTM 1. Label the following parts of the respiratory system: 2. In the diagram below, label the types of air volumes with the following terms: tidal volume, vital capacity, residual volume, inspiratory volume, and expiratory reserve volume: Page 1 of 5

2 3. Identify the following as either True or False: s air moves out during expiration, it cools and loses its moisture, which is then deposited on the windpipe lining. decrease in temperature of blood at the tissues will result in more oxygen being released from hemoglobin. The thoracic cavity and lungs are separated by a fluid-filled space having a positive pressure. 4. function of the structure labelled X is to: Produce sound xchange gases arry air into and out of the lung Stimulate the breathing centre in the brain 5. Which of the following is the correct sequence for air transport in the respiratory system: Trachea, pharynx, bronchi, bronchiole, alveoli lveoli, bronchiole, bronchi, pharynx, trachea Pharynx, trachea, bronchiole, bronchi, alveoli ronchi, bronchiole, trachea, pharynx, alveoli Pharynx, trachea, bronchi, bronchiole, alveoli 6. The cone shaped horizontal sheet of muscle and connective tissue that forms the floor of the thoracic cavity is called the: piglottis Pleural membranes Intercostal muscle iaphragm Pharynx 7. Which of the following statements is NOT true about inspiration: Increased O 2 levels stimulate the respiratory center Upon stimulation, the diaphragm contracts Increased thoracic size causes the lungs to expand xpanded lungs cause greater intrapleural pressure partial vacuum sucks air into the lungs

3 RSPIRTORY SYSTM 8. Which of the following statements is NOT true about external inspiration: PO 2 is higher in the capillary than in the alveolus O 2 diffuses out of the blood into the alveoli PO 2 is higher in the capillary than in the alveolus O 2 diffuses out of the alveolus into the capillary reathing at high altitudes is less effective than at low altitudes 9. What is the primary stimulus that triggers the respiratory center for inspiration to occur: O 2 O 2 and O 2 O 2 and H + H + and O Which of the following would cause the effect shown in the graph below: Increased O 2 in the blood Increased numbers of red blood cells Increased O 2 in the blood ecreased concentration of H The graph shows changes in air pressure in the thoracic cavity during breathing. Which of the following occurs between times X and Y: Rib muscles relax and diaphragm relaxes Rib muscles relax and diaphragm contracts Rib muscles contract and diaphragm relaxes Rib muscles contract and diaphragm contracts Page 3 of 5

4 12. Label the structures W, X, Y and Z in the diagram below, and describe the roles of structures W, X, and Z in the process of inhalation: W: X: Y: Z: 13. High concentrations of bicarbonate ion (HO 3 - ) in the blood will result in: Increased rate of breathing ecreased rate of breathing Increased pressure in the chest cavity ecreased nervous stimulation of the diaphragm 14. The following reaction takes place in the blood. Substance X would be: O 2 + H 2 O Thrombin X H 2 O 3 H HO 3 alcium ions arbonic anhydrase Prothrombin activator 15. Which of the following represents the composition of blood at X shown in the diagram below:

5 RSPIRTORY SYSTM 16. In the diagram below, structure W is a bronchiole. Name the structure labelled X, and list two characteristics of structure X, and explain how these characteristics assist the function of the whole structure. X: I. escribe the two processes that occur at structure X: 17. Match the following clues to the appropriate definition below: inspiration, expiration, ventilation, internal respiration, cellular respiration, and external respiration: xit of air from the lungs Production of TP in cells Gas exchange between blood and tissue fluid Gas exchange between air and blood Gas exchange into and out of the lungs ntrance of air into the lungs Page 5 of 5