Search results
Results from the WOW.Com Content Network
A digitigrade animal is one that stands or walks with its toes (phalanges) on the ground, and the rest of its foot lifted. Digitigrades include birds (what many see as bird's knees are actually ankles), cats, dogs, and many other mammals, but not plantigrades (such as humans) or unguligrades (such as horses). Digitigrades generally move more ...
The backward-pointing "heel" that is easily visible is a joint between the tibiotarsus and tarsometatarsus. [3] [4] The joint inside the tarsus occurs also in some reptiles. It is worth noting here that the name "thick knee" of the members of the family Burhinidae is a misnomer because their heels are large. [2] [8]
In terrestrial animals, plantigrade locomotion means walking with the toes and metatarsals flat on the ground. It is one of three forms of locomotion adopted by terrestrial mammals . The other options are digitigrade , walking on the toes and fingers with the heel and wrist permanently raised, and unguligrade , walking on the nail or nails of ...
Genu recurvatum is a deformity in the knee joint, so that the knee bends backwards. In this deformity, excessive extension occurs in the tibiofemoral joint. Genu recurvatum is also called knee hyperextension and back knee. This deformity is more common in women [citation needed] and people with familial ligamentous laxity. [2]
With reference to quadrupeds, the term hindleg or back leg is often used instead. In bipedal animals with an upright posture (e.g. humans and some primates ), the term lower limb is often used. Location
To get back up, it first gets on its front knees and positions its backside on top of its hindlegs. It then pulls the backside upwards, and the front legs stand straight up again. At each stage, the animal swings its head for balance. [50]: 67 If the giraffe wants to reach down to drink, it either spreads its front legs or bends its knees. [43]
Confronted animals, or confronted-animal as an adjective, where two animals face each other in a symmetrical pose, is an ancient bilateral motif in art and artifacts studied in archaeology and art history. The "anti-confronted animals" is the opposing motif, with the animals back to back.
Ape skeletons. A display at the Museum of Zoology, University of Cambridge.From left to right: Bornean orangutan, two western gorillas, chimpanzee, human. The evolution of human bipedalism, which began in primates approximately four million years ago, [1] or as early as seven million years ago with Sahelanthropus, [2] [3] or approximately twelve million years ago with Danuvius guggenmosi, has ...