Posted inOrgans
Gross Anatomy of the Lungs
The lungs are paired spongy organs in the thoracic cavity, each divided into lobesthree on the right, two on the leftto accommodate the heart's position. The right lung is shorter…
Posted inCell
Four Chain Structure of a Generic Antibody IgG2 Structures
IgG antibodies consist of four polypeptide chains: two identical heavy chains and two identical light chains linked by disulfide bonds into a Y-shaped molecule. The heavy chains determine the classgamma…
Posted inOrgans
Mucosa Associated Lymphoid Tissue MALT Nodule
Mucosa-associated lymphoid tissue, including nodules like Peyers patches in ileum, tonsils, and appendix, forms diffuse surveillance networks beneath epithelial surfaces rich in antigens, with M cells sampling lumen contents for…
Posted inMedical
Embroyonic Disc Amniotic Cavity Yolk Sac
The embryonic disc with amniotic cavity and yolk sac represents the early post-implantation stage, where the bilaminar disc of epiblast and hypoblast forms, then gastrulation creates a trilaminar disc with…
Posted inMedical
Cardiac Cycle vs Heart Sounds
A comparison of the cardiac cycle and heart sounds visually links mechanical events in the heart to what is heard through a stethoscope. The diagram aligns phases such as atrial…
Posted inOrgans
Internal Anatomy of the Heart
The heart's internal anatomy features four chambers with septa dividing left and right, atria receiving blood via smooth posterior walls and pectinate anterior plus auricles, ventricles with trabeculae carneae and…
