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Major organ systems. Circulatory system: pumping and channeling blood to and from the body and lungs with heart, blood, blood vessels; Digestive system: digestion and ...
The vegetative (somatic) structures of vascular plants include two major organ systems: (1) a shoot system, composed of stems and leaves, and (2) a root system. These two systems are common to nearly all vascular plants, and provide a unifying theme for the study of plant morphology.
Plant anatomy or phytotomy is the general term for the study of the internal structure of plants.Originally, it included plant morphology, the description of the physical form and external structure of plants, but since the mid-20th century, plant anatomy has been considered a separate field referring only to internal plant structure.
The abdomen can be divided into quadrants or regions to describe the location of an organ or structure. Classically, quadrants are described as the left upper, left lower, right upper, and right lower. [citation needed] Quadrants are also often used in describing the site of an abdominal pain. [15] The abdomen can also be divided into nine regions.
Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
The juxtaoral organ in humans is a small longish structure (10–14 mm in length, 1–2 mm in diameter), situated medially to the medial pterygoid muscle. The organ consists of a central ramified cord of epithelial parenchyma, embedded in connective tissue particularly rich in nerve fibers and sensory receptors.
Each zangfu organ has a yin and a yang aspect, but overall, the zang organs are considered to be yin, and the fu organs yang. [ 6 ] Since the concept of the zangfu was developed on the basis of wuxing philosophy, they are incorporated into a system of allocation to one of five elemental qualities (i.e., the Five goings or Five Phases).
The first organ ever induced and made in the lab was the bladder, which was created in 1999. [15] By 2014, there had been various tissues regenerated by the 3D printer and these tissues included: muscle, vagina, penis and the thymus. In 2014, a conceptual human lung was first bioengineered in the lab.