"Why do almost all mammals have seven cervical vertebrae? Developmental constraints, Hox genes, and cancer". J. Exp. Zool.285 (1): 19-26.Frietson G (1999) Why do almost all mammals have seven cervical vertebrae? Developmental constraints, Hox genes, and cancer. J Exp Zool (Mol Dev ...
The vertebral column (VC) is composed of 33 vertebrae [cervical (C), 7; thoracic (T), 5; lumbar (L), 5; sacral (S), 5; coccygeal, 4], which are interconnected by intervertebral (IV) disks (except C1, C2) and stabilized by spinal ligaments. Is insect a vertebrate or invertebrate?
In birds and mammals,bone marrow is the primary site of new blood cell production(or haematopoiesis). It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells. In adult humans, bone marrow is primarily located in the ribs, vertebrae, sternum, and bones of the...
We have to consider the possibility that Matt and I misinterpreted the serial position of BYU 9024. If instead of being C9 it were C14 (the longest cervical inBarosaurus) then the AMNH analogue would be 865 mm rather than 685 mm. That would make it “only” 1.58 times as long as the...
hypocentrum of ancestral first cervical vertebrae; 4) hypocentrum of ancestral second cervical vertebrae; 5) neural arch of ancestral second cervical vertebrae. 22. Muscle blocks in adult fish: 1) burgermeres; 2) metameres; 3) myomeres; ...