Lecture 1

• Zygote is the first stem cell of the human body
• Capacitation removes all Glycoproteins of the sperm, which act as self-identity markers
• Every cell has an identity marker called Glycoprotein located on the cell membrane
• Undifferentiated tissue: all cells at one point are the same
• Somites: 44 pairs of them, all lining up at the spinal cord

  • Three types of somites: Dermatome, Myotome, Sclerotome
  • All somites are spinal nerves
  • Dermatome supplies skin
  • Myotome supplies muscle
• Ontogeny recapitulates phylogeny: development of species
• Facial nerves on the face are not spinal nerves, they are trigeminal nerves
• Anatomical position: arms by the side, thumbs pointing outwards
• Pancreas is 99% a digestive organ and 1% endocrine
• Antibodies are made up of amino acids
• Bone supplies metabolism: the sum total of all the chemical reactions in a body, involving enzymes
• Enzymes are made up of 2/3 parts, with the main part being apozyme (a glob of protein) that determines the shape of the enzyme, which can be changed by pH and temperature