Gas exchange

Where does gas exchange occur in cutaneous respiration?

• Gills

• Lungs

• Skin

• Tracheoles

Which of the following features of a gaseous exchange system is not always necessary?

• Good blood supply

• Large surface area

• Permeable surface

• Thin surface

In a tracheal system air first enters the body via:

• Mouth

• Spiracles

• Tracheae

• Tracheoles

Moving water across the gills by swimming with an open mouth is known as:

• Boar ventilation

• Bull ventilation

• Passive ventilation

• Ram ventilation

Which of the following features of gills helps to overcome the problem of the high density of water?

• Countercurrent exchange

• Moving water in one direction

• Pharyngeal pumping

• Tips of gill filaments overlap

The bony plate that covers the gills in bony fish is known as the:

• Anterior raker

• Gill arch

• Operculum

• Posterior raker

In mammalian lungs most gas exchange takes place where?

• Alveoli

• Bronchioles

• Bronchi

• Trachea

In birds, gas exchange takes place in the:

• Air sacs

• Bronchi

• Parabronchi

• Syrinx

In the avian lung gas exchane takes place during:

• Exhalation

• Exhalation and inhalation

• Inhalation

Which type of animal ventilates its lungs using a postive pressure pump?

• Cow

• Frog

• Lizard

• Turtle