Respiratory System Test Flashcards
During inhalation, oxygen will move directly from the trachea into the:
Bronchi
What reduces the friction between the lungs and rib cage during respiration?
Pleural Membranes, Intrapleural Fluid
In which part of the respiratory tract does diffusion of oxygen and carbon dioxide occur?
Alveoli
On average, humans exhale ______ CO2 in a normal breath
4.0%
The maximum amount of air that can be moved into or out of the lungs in a single breath is called the:
Vital Capacity
What chemicals in the blood are detected by the chemoreceptors, triggering inhalation and exhalation?
Hydrogen ions and Bicarbonate
The respiratory control centre in the brain is called the:
Medulla Oblongata
What traps foreign particles in our respiratory system?
Cilia and Mucus
What is a passageway for food AND air?
Pharnyx
Gas exchange between the alveoli and red blood cells is called:
External respiration
Gas exchange between the red blood cells and the cells in the muscles and tissues is called:
Internal respiration
The inner surface of each alveolus is lined with:
Surfactant
In inhalation, oxygen will travel from the bronchi directly to the:
Bronchioles
The vocal chords are found in the:
Larynx
The volume of air exhaled through forced expiration is called the:
Expiratory Reserve
The volume of air that remains in your lungs so that they do not collapse is called the:
Residual Volume
Who would have the largest vital capacity?
Male athlete
Which receptors in the lungs will signal to the respiratory control centre to stop sending nerve impulses to the diaphragm and intercostals?
Stretch Receptors
In the cell, oxygen combines with ______ to produce energy:
Glucose and ADP
What is produced directly during cellular respiration?
Water and CO2
The right lung has _____ lobes, while the left lung has ____ lobes
3, 2
When you inhale your diaphragm and intercostals:
Contract
What is the correct pathway for an O2 molecule entering the respiratory system?
Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveoli
