NettetNational Center for Biotechnology Information Nettet2 dager siden · Grace Ebert. “Come On,” bronze, 26 x 24 x 12 inches. All images courtesy of CASART, shared with permission. With a flair for dramatic contortions of the human body, Spanish artist Isabel Miramontes ( previously) casts elongated limbs and impossibly stretched torsos in bronze. Many of her elegant sculptures depict androgynous figures …

Polydactyly in stem-tetrapods - Wikipedia

NettetThese structures primarily involve modifications in limb proportions and iliosacral articulation. Arboreal (tree-dwelling) anurans have long limbs and digits with large, terminal, adhesive pads; anurans that burrow have short sturdy limbs and large spatulate tubercles made of keratin on their feet. Pentadactyly (from Greek πέντε pénte "five") is the condition of having five digits on each limb. It is traditionally believed that all living tetrapods are descended from an ancestor with a pentadactyl limb, although many species have now lost or transformed some or all of their digits by the process of evolution. However, this viewpoint was challenged by Stephen Jay Gould in his 1991 essay "Eight (Or Fewer) Little Piggies", where he pointed out polydactyly in early tetrapods and d… diamantskivor

Fish - Wikipedia

NettetDescendants of organism (d) have limbs with digits. Mammals and turtles are more closely related than are lungfishes and sharks. Hagfishes, lungfishes, and frogs have … NettetA Frog’s Limbs Bones in the foot of a frog. Illustration by: Mr. Amphibian. The hind limbs of a frog consist of the femur, tibiofibula, tarsus, and feet. The femur, Tibiofibula, and tarsus are labeled in the diagram at the top of the page. Upon closer inspection of the foot, you’ll find the tarsals, metatarsals, and phalanges. A digit is one of several most distal parts of a limb, such as fingers or toes, present in many vertebrates. Names. Some languages have different names for hand and foot digits (English: respectively "finger" and "toe", German: "Finger" and "Zeh", French: "doigt" and "orteil"). Se mer A digit is one of several most distal parts of a limb, such as fingers or toes, present in many vertebrates. Se mer Humans normally have five digits on each extremity. Each digit is formed by several bones called phalanges, surrounded by soft tissue. Human fingers normally have a nail at the distal phalanx. The phenomenon of polydactyly occurs when extra digits are present; fewer digits … Se mer Birds and theropod dinosaurs (from which birds evolved) have three digits on their hands. Paradoxically the two digits that are missing are different: … Se mer • Polydactyly in early tetrapods • Polydactyly Se mer Some languages have different names for hand and foot digits (English: respectively "finger" and "toe", German: "Finger" and "Zeh", French: "doigt" and "orteil"). In other languages, e.g. Se mer Each finger has an orderly somatotopic representation on the cerebral cortex in the somatosensory cortex area 3b, part of area 1 and a distributed, … Se mer Two ideas about the homology of arms, hands, and digits exist. • That digits are unique to tetrapods; and • That homologous antecedents to digits were present in the fins of early sarcopterygian fish. Se mer diamantni piling obraza