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The pressure of air in the air sac is also heavily involved in song production, as different males singing the same song have similar modulations in air sac pressure. [20] Changes in air pressure patterns are indicative of respiratory muscle activity and the airflow around the syrinx, the primary vocalization organ of songbirds. [20]
The saltwater crocodile (Crocodylus porosus) is a crocodilian native to saltwater habitats, brackish wetlands and freshwater rivers from India's east coast across Southeast Asia and the Sundaland to northern Australia and Micronesia.
The mouth of most sea urchins is made up of five calcium carbonate teeth or plates, with a fleshy, tongue-like structure within. The entire chewing organ is known as Aristotle's lantern from Aristotle's description in his History of Animals (translated by D'Arcy Thompson):
Musicians with cornua and a water organ, detail from the Zliten mosaic, 2nd century CE. The water organ or hydraulic organ (Greek: ὕδραυλις) (early types are sometimes called hydraulos, hydraulus or hydraula) is a type of pipe organ blown by air, where the power source pushing the air is derived by water from a natural source (e.g. by a waterfall) or by a manual pump.
The earliest animals were marine invertebrates, that is, vertebrates came later. Animals are multicellular eukaryotes, [note 1] and are distinguished from plants, algae, and fungi by lacking cell walls. [1]
A secretary bought three shares of her company's stock for $60 each in 1935. Grace Groner reinvested her dividends for 75 years, and her stake ballooned to $7.2 million.
In this week's episode of Inside Coverage, Jason Fitz and Frank Schwab give their instant reactions and takeaways from Week 15 of NFL action.
Trainer Cory Gregory shares a quick abs workout you can use to stop skipping your core by making this a pre-snooze habit.