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The axes and sagittal plane are the same for bipeds and quadrupeds, but the orientations of the coronal and transverse planes switch. The axes on particular pieces of equipment may or may not correspond to the axes of the body, especially since the body and the equipment may be in different relative orientations.
The axes of the body are lines drawn about which an organism is roughly symmetrical. [7] To do this, distinct ends of an organism are chosen, and the axis is named according to those directions. An organism that is symmetrical on both sides has three main axes that intersect at right angles. [3]
They also showed why lifespan scales as the + 1 ⁄ 4 power and heart rate as the - 1 ⁄ 4 power. Blood flow (+ 3 ⁄ 4) and resistance (-3 ⁄ 4) scale in the same way, leading to blood pressure being constant across species. [37] Hu and Hayton in 2001 discussed whether the basal metabolic rate scale is a 2 ⁄ 3 or 3 ⁄ 4 power of body mass.
Keeled scales of a colubrid snake (banded water snake; Nerodia fasciata). In zoology, a scale (Ancient Greek: λεπίς, romanized: lepís; Latin: squāma) is a small rigid plate that grows out of an animal's skin to provide protection.
The scale-eating cichlid Perissodus microlepis [31] Mouth and jaw asymmetry More effective at removing scales from their prey Humans [32] [33] [34] Handedness and internal asymmetry of organs e.g. left lung is smaller than the right Handedness is an adaptation reflecting the asymmetries of the human brain. All vertebrates
In anatomy, the axis (from Latin axis, "axle") is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests. The spinal cord passes through the axis. The defining feature of the axis is its strong bony protrusion known as the dens, which rises from the superior aspect of the bone.
Human anatomy is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy . Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical structures that can be seen by unaided vision.
Articulation of the atlas with the epistropheus or axis; Articulations of the vertebral column with the cranium; Articulation of the mandible; Costovertebral articulations; Sternocostal articulations; Articulation of the manubrium and body of the sternum; Articulation of the vertebral column with the pelvis; Articulations of the pelvis
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