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  2. Heart valve - Wikipedia

    en.wikipedia.org/wiki/Heart_valve

    Tricuspid atresia is the complete absence of the tricuspid valve which can lead to an underdeveloped or absent right ventricle. Pulmonary atresia is the complete closure of the pulmonary valve. Ebstein's anomaly is the displacement of the septal leaflet of the tricuspid valve causing a larger atrium and a smaller ventricle than normal.

  3. Mitral valve - Wikipedia

    en.wikipedia.org/wiki/Mitral_valve

    The normal diameter of the mitral annulus is 2.7 to 3.5 centimetres (1.1 to 1.4 in), and the circumference is 8 to 9 centimetres (3.1 to 3.5 in). Microscopically, there is no evidence of an annular structure anteriorly, where the mitral valve leaflet is contiguous with the posterior aortic root.

  4. Root hair - Wikipedia

    en.wikipedia.org/wiki/Root_hair

    Root tip, showing young root hairs. Root hairs or absorbent hairs, are outgrowths of epidermal cells, specialized cells at the tip of a plant root.They are lateral extensions of a single cell and are only rarely branched.

  5. Cardiac skeleton - Wikipedia

    en.wikipedia.org/wiki/Cardiac_skeleton

    In normal anatomy, there is only one conduit for electrical conduction from the upper chambers to the lower chambers, known as the atrioventricular node. The physiologic cardiac skeleton forms a firewall governing autonomic /electrical influence until bordering the bundle of His which further governs autonomic flow to the bundle branches of the ...

  6. Tricuspid valve - Wikipedia

    en.wikipedia.org/wiki/Tricuspid_valve

    The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, at the superior portion of the right ventricle.The function of the valve is to allow blood to flow from the right atrium to the right ventricle during diastole, and to close to prevent backflow (regurgitation) from the right ventricle into the right atrium during right ventricular ...

  7. Pulmonary valve - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_valve

    The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery, and has three cusps.

  8. Human anatomy - Wikipedia

    en.wikipedia.org/wiki/Human_anatomy

    Human anatomy (gr. ἀνατομία, "dissection", from ἀνά, "up", and τέμνειν, "cut") is primarily the scientific study of the morphology of the human body. [1]

  9. Plant anatomy - Wikipedia

    en.wikipedia.org/wiki/Plant_anatomy

    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.