What is the function of these forelimbs?
For most mammals, the primary function of the forelimb is locomotion. The forelimb has been successfully adapted in mammals of all sizes and in terrestrial, arboreal, aquatic, and airborne environments.
Does a whale have a forelimb?
Abstract. The forelimb of cetaceans (whales, dolphins, and porpoises) has been radically modified during the limb-to-flipper transition. Extant cetaceans have a soft tissue flipper encasing the manus and acting as a hydrofoil to generate lift.
What function is performed by human arms forelimbs of frog and forelimbs of whale?
human arms,forelimbs of dog and forelimbs of whale are homologous. so function of human arms is to grasp something,forelimbs of dog-to walk and flippers of whale-swimming.
What is the function of a whale hand?
A whale flipper and a bat wing are also homologous structures in the same sense as a human arm and cat arm with a humerus, radius and ulna, and so on. But the whale’s “arm” is actually a flipper that it uses to swim while the bat uses its wing to fly.
What is the forelimb?
Definition of forelimb : a limb (such as an arm, wing, fin, or leg) that is situated anteriorly the forelimb of a bat.
Do the forelimbs of the human the whale and the bat function in similar ways?
This is known as homologous structure. human arms, cat forelegs, whale flippers, and bat wings all have the same basic bone structure. While the function of each of these is different, they are all variations of a common ancestor, that has simply adapted to different functions.
What type of movement is a whales limb responsible for?
Swimming
The whale fin needs to be longer to help in movement through water. Thumbs are not necessary as the fins are not used for grasping….
| Animal | Primary Functions |
|---|---|
| Whale | Swimming. |
| Cat | Running, jumping, pouncing, climbing, catching prey. |
| Bat | Flying, gliding. |
| Bird | Flying, gliding. |
Do whales have arms?
Whales generally have four fins: two pectoral fins (instead of arms), a caudal fin (also called the tail) and a dorsal fin. The caudal fin is used for propulsion of the animal, with up-and-down movements created by powerful muscles along the peduncle.
What function is performed by human arms?
The function of the human arm is to be able to reach objects with your hands.
What is the function of the human arm?
Answer and Explanation: The function of the human arm is to reach out and grab anything, from food to tools to hand-holds, that may be helpful.
Is flipper of whale and forelimb of cat homologous?
An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution.
Why do whales have flippers?
These marine mammals use their flippers to perform various aquatic acrobatics such as steering left and right by changing their flippers’ angle and using their flippers to provide lift so they can rise in the water control their level of aquatic depth.
What is the main function of a whale?
What are the primary functions of a whale? “Among their many ecological roles, whales recycle nutrients and enhance primary productivity in areas where they feed.” They do this by feeding at depth and releasing fecal plumes near the surface—which supports plankton growth—a remarkable process described as a “whale pump.”
Why do whales use pelvis bones for reproduction?
Why, if whales originated from other tetrapods, should whales use bones that are perfectly suited for controlling their sexual organs instead of showing any vestige of usefulness for life on land? These results show that male whales use pelvis bones that were well crafted for anchoring reproductive organs—not for anchoring limbs.
Are whale hips adapted for limb articulation and not reproductive organs?
Are whale hips indeed adapted—or, rather, designed—for limb articulation and not as support for their reproductive organs? Since the whale “pelvic girdle” does not even link to its spine, legs attached to a whale’s pelvis would only get in the way.
What is the function of the flexor digitorum communis in whales?
The belly of the flexor digitorum communis comes in direct contact with a large counter-current heat exchanger in the axilla of bowhead whales ( Balaena; Cooper, unpublished data), and contraction of the muscle may generate heat that could be cooled distally in the limb.
