70% of blood supply of scaphoid is by dorsal branch of radial artery
70% of scaphoid bones have arterial foramina through out their length
70% of carpal fractures are scaphoid fractures
70% of scaphoid fractures occur through the waist
70% of scaphoid fractures are detected on initial radiographs
70% proximal scaphoid fractures unite
70% unstable scaphoid fractures unite
Vmax is the maximum velocity, or how fast the enzyme can go at full ‘‘speed.’’ Vmax is reached when all of the enzyme is in the enzyme–substrate complex. Km is the substrate concentration at which v = 1/2 Vmax. Km approximately describes the affinity of the substrate for the enzyme….
Hemoglobin Switching mnemonics 1st to appear: Embryonic hemoglobin (Gower and Portland) Switch from fetal hemoglobin to adult hemoglobin: “Gamma goes, Beta becomes, Alpha always” Fetal hemoglobin: α2γ2 Adult hemoglobin: α2β2 ζ chain α chain ε chain HbE Gower 1 HbE Gower 2 γ chain HbE Portland I HbF β chain HbE Portland II…
4 week embryo 5 mesenchymal prominences (facial primordia) appear in relation to the stomodeum (a depression in the surface ectoderm which marks the future mouth and oral cavity): Cranially: Frontonasal prominence (unpaired) Laterally: Maxillary prominence (paired; 1st pharyngeal arch) Caudally: Mandibular prominence (paired; 1st pharyngeal arch) 5 week embryo Localized…