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A book lung is a type of respiration organ used for atmospheric gas exchange that is found in many arachnids, such as scorpions and spiders.

The ulna is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm.

The Chinese giant salamander is the largest salamander and largest amphibian in the world. It is fully aquatic and is endemic to rocky mountain streams and lakes in China.

Cutaneous respiration – Gas exchange – Adaptation among different animals whole body surface.

Branchial respiration: Arthropodes, echinoderms, fishes and fully aquatic amphibians gas exchange take place through gills.

Also know as windpipe. Length about 10 to 16 cm. Trachea is protected by cartilaginous rings known as Tracheal rings.

Left lung has two lobes. Lungs are spongy and elastic lobular organs.

Expiration( Breathing out) is a passive process. Inspiration (Breathing in) is a mechanical process.

Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume.

Rutherford’s model shows that in the centre of an atom is a small positively charged nucleus, which is surrounded by the negatively charged electrons.

J J Thomsons – Plum Pudding Model

Neils Bohr – Atom model on the basis of Quantom Theory.
In the Bohr model of the atom, electrons travel in defined circular orbits around the nucleus.

This force is called an impulsive force.The impulsive force is much stronger than any other force available at that point of time and acts on an object for a very short interval during collision or explosion

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