Some species that appear to be very different from other species can actually have similar anatomy. For example the scientist be
lieve that whales involved from land mammals. One reason for this is the presence of several function less hind limb bones still found eternity in the number of whale species. What is the term for a reduced often function some species that appear to be very different from other species can actually have similar anatomy. For example the scientist believe that whales involved from land mammals. One reason for this is the presence of several function less hind limb bones still found eternity in a number of whale species. What is the term for a reduced often functionless anatomical structure that serves as evidence in an organisms evolutionary past
Following are some examples of homologous structures. A dolphin's flipper, bird's wing, cat's leg, and the human arm are considered homologous structures. Whereas human beings have bones such as the humerus, ulna, radius, wrist bones, and fingers, these features appear as similar bones in form in the other animals. Bats, whales, and many other animals have very similar homologous structures, demonstrating that these creatures all had a common ancestor. The tailbone in human beings is so-named because it is a homologous structure to the beginning of many animals' tails, such as monkeys. It is known as "vestigial" because it is the last vestige of what was once a tail. All mollusks have a "foot" that they use to travel. This foot is homologous although it may not appear to be immediately - close inspection demonstrates that in terms of form and function, gastropods, cephalopods, and bivalves share this homologous structure in common. Mammals share the homologous structure of the vertebrae in common. For instance, in spite of its height, the giraffe has the very same number of neck bones (seven) as a giant whale and a tiny human being. Human beings, dogs, and cats all have similar pelvises, which are homologous structures to a vestigial pair of bones that snakes have. These bones are the last remains of a pelvis, with no legs to attach. Our eyes are homologous to the eye bulbs which blind creatures who live in caves have on their heads. All organisms contain homologous plasma membranes with what is called a phospholipid bi-layer. The wrist bone of the human being is homologous with the structures of many other animals, including the dolphin and the bird. A homologous structure in the panda looks like a sixth appendage, but it is actually a modified wrist bone that helps the panda bears pick leaves off the trees more dexterously. An auditory bone that exists inside the ear of mammals is a homologous structure to the reptile's jaw bone (including the dinosaurs) as well as the jawbone of species of fish that are still in existence today. The carpals, metacarpals, and phalanges of the human hand have homologous structures in a variety of animals, and they're not all mammals. For instance, these features are seen in penguins and reptiles as well as the mammals to which human beings are more closely related. The genetic code among all living things is homologous - extremely similar although other genetic codes exist. This suggests a common ancestor. Wasps and bees have stingers that they can use when they feel they are in danger. However, this is a homologous structure to the ovipositor of other organisms - the feature that allows these organisms to lay eggs.
The plane(s) of the section that would allow me examine the internal anatomy of both lungs at the same time are as follows;
Sagittal
Coronal
Transverse
<h3>What are body planes?</h3>
Body planes are imaginary geometric planes that are used to divide the body into pieces. They are used to analyze interior organs and systems during anatomical procedures.
We have the following body plane types:
Any vertical plane that separates the body into anterior and posterior halves is referred to as a coronal plane.
Any plane that separates the body into superior and inferior halves and is nearly perpendicular to the spine is referred to as a transverse plane.
Any imaginary plane parallel to the median plane is referred to as the sagittalplane.
Based on the three types of planesections we have, the plane(s) of the section that would allow me examine the internal anatomy of both lungs at the same time are as follows;
I believe that the loop of Henle is the hairpin structure that connects the proximal and distal convoluted tubules. The loop of Henle is composed of the ascending and the descending limb. The descending loop of Henle connects the proximal convoluted tube with the ascending limb of the loop of Henle, while the ascending loop of Henle connects the descending limb of the loop of Henle with the distal convoluted tubule.
By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%. Although humid air seems like it contains a lot of water, the maximum amount of water vapor that air can hold is only about 4%.
