What do the gas exchange systems of mammals fish and insects have in common?

Mammals and insects both get their oxygen from air, while fish get oxygen from water. Water has a much lower oxygen concentration than air, and is harder to ventilate because it is more viscous. This means fish need to have a more efficient gas exchange system to get enough oxygen from the water.

How does exchange of gases occur in fish and insects?

Fish exchange gases through gills. Insects by trachea ( in case of cockroach).

How does gas exchange take place in animals essay?

In animals, gas exchange follows the same general pattern as in plants. Oxygen and carbon dioxide move by diffusion across moist membranes. In simple animals, the exchange occurs directly with the environment. But with complex animals, such as mammals, the exchange occurs between the environment and the blood.

What is gas exchange in mammals?

In mammals, air is warmed and humidified in the nasal cavity. Air then travels down the pharynx, through the trachea, and into the lungs. In the lungs, air passes through the branching bronchi, reaching the respiratory bronchioles, which house the first site of gas exchange.

What is gas exchange in insects?

For insects, respiration is separate from the circulatory system. Oxygen and carbon dioxide gases are exchanged through a network of tubes called tracheae. Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

What is the gas exchange system in fish?

Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments.

Where and how does the exchange of gases occur in a fish b insects and C frog?

In earthworm, the exchange of gases occurs through the moist skin. In fishes it takes place through gills and in insects through the tracheae.

Why do insects need gas exchange?

Insects have an impermeable exoskeleton and internal gas exchange system in order to prevent water loss (dessication). This is an adaptation to their terrestrial (land) lifestyle.

How do fish do gas exchange?

Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills.

Why is gas exchange important in mammals?

Having an internal gas exchange system (lungs) helps to reduce water loss and maintain a moist gas exchange surface. This allows mammals to inhabit a greater variety of terrestrial habitats. The highly branched structure of the bronchial tree leads to many tiny alveoli.

What is the gas exchange surface of a fish?

gills
The exchange surfaces in fish are gills . Exchange of gases in fish is very efficient because of: the large surface area of the gills.

Why do insects need a gas exchange system?

Insects have an impermeable exoskeleton and internal gas exchange system in order to prevent water loss (dessication). This is an adaptation to their terrestrial (land) lifestyle. Insects are found in some of the driest places in the world.