A leg is a weight bearing In orthopedics, weight bearing is the amount of weight a patient puts on the leg on which surgery has been performed. It is generally described as a percentage of the body weight, because each leg of a healthy person carries the full body weight when walking, in an alternating fashion structure, usually having a columnar A column in structural engineering is a vertical structural element that transmits, through compression, the weight of the structure above to other structural elements below. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of shape.
As an anatomical animal Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. All animals are also structure it is used for locomotion Animal locomotion, which is the act of self-propulsion by an animal, has many manifestations, including running, jumping and flying. Animals move for a variety of reasons, such as to find food, a mate, or a suitable microhabitat, and to escape predators. For many animals the ability to move is essential to survival and, as a result, selective. The distal Standard anatomical terms of location are employed in science which deal with the anatomy of animals to avoid ambiguities which might otherwise arise. They are not language-specific, and thus require no translation. They are universal terms that may be readily understood by zoologists who speak any language end is often modified to distribute force In physics, a force is any influence that causes a free body to undergo an acceleration. Force can also be described by intuitive concepts such as a push or pull that can cause an object with mass to change its velocity , i.e., to accelerate, or which can cause a flexible object to deform. A force has both magnitude and direction, making it a (such as a foot The foot is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is a separate organ at the terminal part of the leg made up of one or more segments or bones, generally including claws or nails). Most animals have an even number of legs.
As a component of furniture it is used for the economy of materials needed to provide the support for the useful surface, the table top or chair seat.
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Terminology
- Uniped The term uniped refers to a person or creature with only one foot and one leg, as contrasted with a biped (two legs) and a quadruped (four legs). Moving using only one leg is known as unipedal movement. There are no known animals which have naturally evolved with only one leg, although through accidents (i.e. amputation) or birth abnormalities it: 1
- Biped Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs, or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning "two feet" (from the Latin bi for "two" and ped for "foot"). Types of bipedal movement include walking, running, or: 2
- Tripedal Tripedal is the term used for (or would be used for) any animal that stands on three legs. The terms bipedal and quadrupedal are used more commonly when referring to animals that either walk on two legs (i.e. humans who walk upright) or animals such as dogs and cats who walk on four legs: 3
- Quadruped Quadrupedalism is a form of land animal locomotion using four limbs or legs. An animal or machine that usually moves in a quadrupedal manner is known as a quadruped, meaning "four feet" . The majority of walking animals are quadrupeds, including mammals such as cattle and cats, and reptiles, like lizards: 4
Many taxa A taxon is a group of (one or more) organisms, which a taxonomist adjudges to be a unit. Usually a taxon is given a name and a rank, although neither is a requirement. Defining what belongs or does not belong to such a taxonomic group is done by a taxonomist. It is not uncommon for one taxonomist to disagree with another on what exactly belongs to are characterized by number of legs:
- Tetrapod Tetrapods are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs, birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish
- Arthropoda An arthropod is an invertebrate animal having an exoskeleton , a segmented body, and jointed appendages. Arthropods are members of the Phylum Arthropoda (from Greek ἄρθρον arthron, "joint", and ποδός podos "foot", which together mean "jointed feet"), and include the insects, arachnids, crustaceans, and: 4, 6 (Insecta Insects are a class within the arthropods that have a chitinous exoskeleton, a three-part body (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and two antennae. They are among the most diverse group of animals on the planet and include more than a million described species and represent more than half of all known living), 8, 12, or 14
- Some arthropods have more than a dozen legs; a few species possess over 100. Despite what their names might suggest,
- Centipedes Centipedes are arthropods belonging to the class Chilopoda and the Subphylum Myriapoda. They are elongated metameric animals with one pair of legs per body segment. Despite the name, centipedes can have a varying number of legs from under 20 to over 300. All centipedes (discounting individual mutants) always have an odd number of pairs of legs, e may have less than 20 or more than 300 legs.
- Millipedes Millipedes are arthropods that have two pairs of legs per segment . Each segment that has two pairs of legs is a result of two single segments fused together as one. Most millipedes have very elongated cylindrical bodies, although some are flattened dorso-ventrally, while pill millipedes are shorter and can roll into a ball, like a pillbug have fewer than 1,000 legs, but up to 750.
- Some arthropods have more than a dozen legs; a few species possess over 100. Despite what their names might suggest,
Tetrapod legs
In tetrapod Tetrapods are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs, birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish anatomy Anatomy is a branch of biology and medicine that is the consideration of the structure of living things. It is a general term that includes human anatomy, animal anatomy (zootomy) and plant anatomy (phytotomy). In some of its facets anatomy is closely related to embryology, comparative anatomy and comparative embryology, through common roots in, leg is used to refer to the entire limb A limb is a jointed, or prehensile (as octopus tentacles or new world monkey tails), appendage of the human or other animal body. In human medicine its precise definition refers[1][2][3] only to the segment between the knee The knee joint joins the thigh with the leg and consists of two articulations: one between the femur and tibia, and one between the femur and patella. It is the largest joint in the human body and is very complicated. The knee is a mobile trocho-ginglymus , which permits flexion and extension as well as a slight medial and lateral rotation. Since and the ankle In human anatomy, the ankle joint is formed where the foot and the leg meet. The ankle, or talocrural joint, is a synovial hinge joint that connects the distal ends of the tibia and fibula in the lower limb with the proximal end of the talus bone in the foot. The articulation between the tibia and the talus bears more weight than between the. This segment is also called the shank,[4][5] and the front (anterior) of the segment is called the shin or pretibia.
In bipedal Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs, or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning "two feet" (from the Latin bi for "two" and ped for "foot"). Types of bipedal movement include walking, running, or tetrapods Tetrapods are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs, birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish, the two lower limbs are referred to as the "legs" and the two upper limbs as "arms" or "wings" as the case may be.
See also
- Arthropod leg The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments are of Latin origin, and may be confused with terms for bones: coxa , trochanter (compare greater trochanter and lesser trochanter), femur, tibia, tarsus, ischium, metatarsus, carpus, dactylus (meaning finger),
- Human leg Although in common usage, the human leg or leg can refer to the entire lower extremity or limb of the human body, including the foot, thigh and even the hip or gluteal region, the precise definition in human anatomy refers to the section of the lower limb extending between the knee and the ankle
Notes
| Wikimedia Commons has media related to: Leg |
- ^ "Leg". Medical Subject Headings (MeSH). National Library of Medicine. http://www.nlm.nih.gov/cgi/mesh/2007/MB_cgi?mode=&term=Leg&field=entry. Retrieved 2009-04-18.
- ^ "leg". Dorland's Medical Dictionary for Healthcare Consumers. Elsevier. http://www.mercksource.com/pp/us/cns/cns_hl_dorlands_split.jsp?pg=/ppdocs/us/common/dorlands/dorland/five/000058188.htm. Retrieved 2009-04-18.
- ^ Merriam-Webster Dictionary Merriam–Webster, which was originally the G. & C. Merriam Company of Springfield, Massachusetts, is an American company that publishes reference books, especially dictionaries that are descendants of Noah Webster’s An American Dictionary of the English Language leg
- ^ Kardong, Kenneth V. (2009). Vertebrates: Comparative anatomy, function, evolution (5th. ed.). McGraw-Hill. p. 340. ISBN The International Standard Book Number is a unique numeric commercial book identifier based upon the 9-digit Standard Book Numbering (SBN) code created by Gordon Foster, now Emeritus Professor of Statistics at Trinity College, Dublin, for the booksellers and stationers W.H. Smith and others in 1966 978-0-07-304058-5.
- ^ Merriam-Webster Dictionary Merriam–Webster, which was originally the G. & C. Merriam Company of Springfield, Massachusetts, is an American company that publishes reference books, especially dictionaries that are descendants of Noah Webster’s An American Dictionary of the English Language shank
Categories: Animal anatomy Categories: Anatomy | Zoology | Animals | Veterinary medicine | Locomotion | Lower limb anatomy |
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Q. I've done 4 or 5 sets of 15 leg lifts every day and I am not getting any results. Is it because it is too little or are they not affective I don't know. What is another way to exercise the lower abs.
Asked by hey - Wed Jan 3 21:21:14 2007 - - 6 Answers - 0 Comments
A. For bulk it is always High weight low reps, or if weightless you would be looking at more like 50 per set and only 3 sets.
Answered by Sattori - Wed Jan 3 21:29:11 2007
