bilateral

Examples of bilateral in the following topics:

• Animal Characterization Based on Body Symmetry

  • Animals can be classified by three types of body plan symmetry: radial symmetry, bilateral symmetry, and asymmetry.
  • Animals with bilateral symmetry have a "head" and "tail" (anterior vs. posterior), front and back (dorsal vs. ventral), and right and left sides.
  • All true animals, except those with radial symmetry, are bilaterally symmetrical.
  • They are believed to have evolved from bilaterally symmetrical animals; thus, they are classified as bilaterally symmetrical.
  • However, the larval fish are bilaterally symmetrical.

• Body Plans

  • Animal body plans can have varying degrees of symmetry and can be described as asymmetrical, bilateral, or radial.
  • They can be asymmetrical, radial, or bilateral in form .
  • Bilateral symmetry is found in both land-based and aquatic animals; it enables a high level of mobility.
  • Bilateral symmetry is illustrated in a goat.
  • The sponge is asymmetrical, the sea anemone has radial symmetry, and the goat has bilateral symmetry.

• Multilateralism, Regionalism, and Bilateralism

  • Despite its commitment to multilateralism, the United States in recent years also has pursued regional and bilateral trade agreements, partly because narrower pacts are easier to negotiate and often can lay the groundwork for larger accords.

• Key Points: Range, Symmetry, Maximum Height

  • Projectile motion is a form of motion where an object moves in a bilaterally symmetrical, parabolic path.
  • All projectile motion happens in a bilaterally symmetrical path, as long as the point of projection and return occur along the same horizontal surface.
  • Bilateral symmetry means that the motion is symmetrical in the vertical plane.

• Superphylum Lophotrochozoa

  • These phyla are also bilaterally symmetrical: a longitudinal section will divide them into right and left sides that are symmetrical .
  • Species in this group have bilateral symmetry.

• Development of the Heart

  • While the arterial system develops mainly from the aortic arches, the venous system arises from three bilateral veins during weeks four through eight of human development.
  • The dorsal aortae are initially bilateral and then fuse to form the definitive dorsal aorta.

• Classes of Echinoderms

  • Their early larvae have bilateral symmetry, but they develop fivefold symmetry as they mature.
  • Several sea urchins, however, including the sand dollars, are oval in shape, with distinct front and rear ends, giving them a degree of bilateral symmetry.
  • These are the only echinoderms that demonstrate "functional" bilateral symmetry as adults because the uniquely-extended oral-aboral axis compels the animal to lie horizontally rather than stand vertically.
  • Sea cucumbers are the only echinoderms that demonstrate "functional" bilateral symmetry as adults, as they lie horizontally as opposed to the vertical axis of other echinoderms.

• Hemispheric Lateralization

  • Additionally, 19.8% of left-handed people have bilateral language functions.
  • While language production is left-lateralized in up to 90% of right-handed subjects, it is more bilateral or even right-lateralized in approximately 50% of left-handers.
  • The processing of visual and auditory stimuli, spatial manipulation, facial perception, and artistic ability are represented bilaterally, but may show right-hemisphere dominance.
  • Numerical estimation, comparison, and online calculation depend on bilateral parietal regions.

• Promoting Free Trade

  • Countries that recognize the benefits for growth from promoting free trade can take unilateral, bilateral, or multilateral action to reduce some of these barriers to trade.
  • Bilateral promotion of free trade is when two countries come to an agreement to reduce barriers together.

• Cleft Palate and Lip

  • Lip cleft can occur as a one-sided (unilateral) or two-sided (bilateral).