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It is because the first animal to have a hand had a specific bone structure in that hand that was very well adapted. All vertebrate animals with a hand, wing, or flipper trace ancestry back to that first animal with a hand. The bone structure is modified slightly for each animal, but the organization of bones in the hand is the same among all the animals that have a hand.

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How are homologous structures different from analogous structures?

Yes, homologous structures have common bone and muscle structures suggesting that they came from an common ancestor while analogous structures do not share any similarity in features, suggesting that they derived from two separate origins.


Are sharks vertebrates or invertebrate?

Vertebrate, but its bones aren't bones they are cartilage. Bones are hard that form the skeletal structure of the body; Cartilages on the other hand, are not as hard and rigid as bones, and most commonly found on fishes, hence, the shark.They are a Vertebrate which means they have a spine.Sharks have a skeleton and that skeleton includes a spine, so they are classed as vertebrates. It's just that the skeleton is made of cartilage rather than bones.Sharks are VERTEBRATES. They do have a backbone and are fish.Sharks belong to the phylum Chordata, and subphylum Vertebrata, and are true vertebrates. Their skeleton is made of cartilage, not bone, but they have a vertebral column. Although the vertebral column is made of cartilage, it is strengthened by tesserae (crystal blocks of calcium salts) which gives it a similar toughness to the bone found in other vertebrates. Tesserae is also found strengthening the sharks jaw and gill arches.it is a vertebrate because it has a backbonesVertebrate- they have a backbone.


The wing of a bat and the foreleg of an alligator are?

Homologous structures are those that have similar looks based upon a common ancestry. THE ANSWER IS HOMOLOGOUS STRUCTURES!!! On the other hand, analogous structures are structures that have the same function. Bats fly, but alligators walk.


What does Radius bone do?

The radius bone doesn't have a specific function, per se. It provides structure and support for the lower arm in tandem with the ulna. It connects to the elbow and the thumb-side of the hand and provides a point of attachment for muscles and ligaments for the arm and hand.The forearm has two large bones, the radius and the ulna, of which the radius is the larger bone. This bone runs from the elbow to the thumb side of the wrist. All land vertebrates have this bone. In man, this bone helps us rotate our hand from palm up to palm down position.


The name of the mid hand bone?

The name of mid hand bone is metacarpal. These are five in number in each hand.


What is the longest bone in your hand?

The longest bone in the human hand is the metacarpal bone, located between the wrist and the fingers.


What animals have a back bone?

Around 3% of animals are vertebrates (animals that have a backbone). This includes approximately 64,000 species. Examples of animals that have a backbone are; sharks, reptiles, mammals and birds.


Structures that grow from the body are called spiracles?

No. The structures that grow from the body are called 'appendages'. In 'invertebrates' (animals without a backbone or spine, broadly speaking), they include antennae, wings, legs etc. while in 'vertebrates'(animals having a spine, e.g. humans) they include the limbs. Spiracles on the other hand are small openings on the bodies of a few animals that are connected to the respiratory system of the animal and these are used for 'breathing'. Their function is quite similar to that of the nostrils in humans.


Where is the lunate bone?

The lunate bone is a carpal located in the hand.


Where does the ulna and radius jooin the hand bone?

The ulna doesn't ve any contact with any bone from the hand


What bone carries the hand?

The metacarpal bones in the palm of the hand carry and support the hand. There are five metacarpal bones in each hand that connect the fingers to the wrist.


What symptoms if bone in left hand crack?

One symptom of a left bone crack in your hand is severe pain. Also, the inability to move your hand is another symptom.