How do birds eliminate nitrogenous waste quizlet?

How is nitrogen excreted from the body in reptiles?

In reptiles, uric acid is the main nitrogenous waste that is excreted by birds as well. It acts as a concentrated form of nitrogen and is eliminated from the body in solid urea. In reptiles, it is released through their skin, which has pores that permit them.

What is the end product of nitrogenous waste?

Nitrogenous wastes are compounds that contain the element nitrogen. These wastes can be converted to urea and then excreted from the body in the form of a concentrated stream of urine. Urea is the end product because it is easier and safer to expel than waste containing ammonia or uric acid.

What nitrogenous waste is excreted by birds?

In reptiles, uric acid is the main nitrogenous waste that is excreted by birds as well. It acts as a concentrated form of nitrogen and is eliminated from the body in solid urea.

What are nitrogenous wastes?

Nitrogenous wastes refer to the nitrogen-derived compounds that are excreted from living organisms. These are broadly classified as urea, uric acid, and ammonia. There is a distinction between uric acid and ammonia, as ammonia comes out in a gaseous state while the other two are dissolved in water.

How do the lungs of birds work?

The lungs in birds operate quite differently than those in humans and other animals. Birds have two relatively small lungs and in the lungs are bellows-like air sacs. These air sacs keep the lungs perpetually inflated. Bird lungs have an opening on each end through which air flows into the interconnected air sacs in the neck, chest, and

Why is it important for birds to breathe fresh air?

Because of the way their lungs work, birds can even sing and fly at the same time. Respiratory problems in Birds However, because of their respiratory system being so sensitive, it is vitally important that the bird’s breath fresh, pure air. Toxins or pollutants in the air can quickly become a major source

How do birds get rid of nitrogen waste?

Birds therefore get rid of their nitrogen waste by using only enough water to push the paste-like uric acid down the excretory system. The white center in bird guano is uric acid. Let’s consider the digestive system. Living birds do not have teeth.

How do birds get rid of fecal sacs?

Growing Out of Diapers. To get rid of the fecal sacs of older babies, the parents carry them away. Robins and bluebirds fly 20-50 yards away, and drop the sacs in flight. Grackles almost always drop fecal sacs over water.

What is the end product of nitrogen metabolism in birds?

Birds are uricotelic, the end product of nitrogen metabolism is uric acid.1,3 The three-lobed avian kidney is located within an area of the dorsomedial coelomic cavity. The kidney lobes are situated within and against the ventral aspect of the cranial rib and vertebral surface.

What are the forms of nitrogenous waste excreted by different species?

Figure 22.13. Nitrogenous waste is excreted in different forms by different species. These include (a) ammonia, (b) urea, and (c) uric acid. (credit a: modification of work by Eric Engbretson, USFWS; credit b: modification of work by B. “Moose” Peterson, USFWS; credit c: modification of work by Dave Menke, USFWS)

How is nitrogen excreted from the body?

Nitrogenous Wastes Of the four major macromolecules in biological systems, both proteins and nucleic acids contain nitrogen. During the catabolism, or breakdown, of nitrogen-containing macromolecules, carbon, hydrogen, and oxygen are extracted and stored in the form of carbohydrates and fats. Excess nitrogen is excreted from the body.

What are the key points in converting ammonia to uric acid?

Key Points. Conversion of ammonia into uric acid is more energy intensive than the conversion of ammonia into urea. Producing uric acid instead of urea is advantageous because it is less toxic and reduces water loss and the subsequent need for water.

How far away do birds drop fecal sacs?

Robins and bluebirds fly 20-50 yards away, and drop the sacs in flight. Grackles almost always drop fecal sacs over water. Long ago, grackles usually nested near rivers, and the flowing water would carry the droppings far away.

Are birds uricotelic or catabolic?

An important point is that birds are uricotelic. They produce uric acid in the liver as an end product of protein catabolism. The uric acid is excreted via the kidney as a colloidal solution from which all the water can be reclaimed, either within the renal tubule or by the terminal bowel.

What is nitrogen metabolism?

Nitrogen metabolism. The metabolism of nitrogen encompasses a number of topics, including nitrogen fixation, the anabolism and catabolism of amino acids, purines, etc. Atmospheric nitrogen is the ultimate source of this element in biomolecules.

How are animals classified based on the end product of nitrogen metabolism?

•Animals are classified into 3 groups based on end product of Nitrogen Metabolism: •Ammonotelic organisms: Excrete Nitrogen as Ammonia •Examples: Bony Fish, Teleostean Fish; •Uricotelic organisms: Excrete Nitrogen as URIC ACID

Which of the following is a uricotelic animal?

Birds and land snails are uricotelic animals. Mammals and frogs are ureotelic animals. Aquatic amphibians and aquatic insects are ammonotelic animals. In Uricotelic organisms, the end product of nitrogen metabolism is uric acid. include terrestrial arthropods (including insects), lizards, snakes, and birds.

How do animals excrete nitrogenous waste?

Nitrogenous wastes are one such product, and different chordates excrete it in different ways. For example, some animals excrete their nitrogenous waste as ammonia, while others excrete it as urea, and others still as uric acid.

How do chordates excrete nitrogenous wastes?

These processes are performed by the excretory system, which quite literally serves to excrete wastes from the body. The body of a chordate is constantly working, and a lot of waste is produced during that metabolic work. Nitrogenous wastes are one such product, and different chordates excrete it in different ways.

What is the difference between gaseous and nitrogenous waste?

While the gaseous waste is excreted through the lungs, the liquid waste is excreted via the kidneys. Nitrogenous wastes come in different dimensions. The most common ones are urea, uric acid, ammonia, and creatinine. Urea is a salt of carbonic acid derived from amino acids in the body, while uric acid is a salt of carbonic acid from purine.

What are the different forms of nitrogenous waste?

Nitrogen excretion: Nitrogenous waste is excreted in different forms by different species. These include (a) ammonia, (b) urea, and (c) uric acid.