18 Questions
What is the main function of the circulatory system?
To transport oxygen and carbon dioxide throughout the body
What is the main component of blood that carries oxygen?
Red blood cells
What type of circulation is found in fish?
Single circulation
What is the main function of the heart?
To pump blood throughout the body
What is the color of oxygenated blood?
Light red
What type of circulation is found in birds and mammals?
Double circulation
What is the main function of the medulla oblongata?
To control the respiratory system
What is the primary role of the peripheral chemoreceptors?
To monitor changes in oxygen levels in the periphery
How does hemoglobin transport oxygen in the blood?
Hemoglobin transports oxygen in multiple small molecules
What is the primary function of stomata in terrestrial plants?
To allow the exchange of respiratory gases
Where are stomata typically found on leaves?
On the lower epidermis
How do aquatic plants obtain the carbon dioxide required for photosynthesis?
From the water in the form of hydrogen carbonate ions
What is the purpose of the alveoli in the lungs?
To provide a large surface area for gaseous exchange
How does the structure of the alveolus facilitate efficient gaseous exchange?
The alveolus is hollow and surrounded by capillaries
What is the primary mechanism by which gases are exchanged in the alveoli?
Diffusion
How do the respiratory systems of fish and crabs differ from the respiratory system in mammals?
Fish and crabs have external gills, while mammals have a pair of lungs
What is the purpose of the diaphragm in the mammalian respiratory system?
To contract and relax to change the volume of the thoracic cavity
How does the direction of blood flow in the gill capillaries relate to the direction of water flow over the gills?
The blood and water flow in opposite directions
Test your knowledge on the respiratory systems of different animals, including verberates like salamanders, lungfish, fish, and crabs. Learn about external and internal gills and understand how gaseous exchange and control occur in mammals through the nasal passage, trachea, bronchi, and bronchioles.
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