Towards the babies heart is called the veins, away from the heart of babies is called
23+23 = 46 chromosoms in a human
22 are autosomes + 1 is sex chromosome = from each parent
Mesonephric duct is for males (wloffian duct)
Paramesinephric duct is for females(mullerian duct)
SRY-gene: sex determining region of Y chromosome = which initiates testosterone,
testes-determining factor TDF, and stimulates mullerian-inhibiting factor to
degenerate paraesonephric ducts.
Genital tubercle : is somthing in early fetus that either becomes a penis or Clitoris
Urogenital fold: encloses urethra of male forming part
Or it is formed to the labia majora
Genetic or biological sex is : XX female // XY male
Gonadal Sex: Testes or Ovaries
Phenotypic Sex: is what we see physically
Hormone and Reproduction : chapter 15 = 87-95, 98-99, 102-106
Testestorone O bond ....and estrogen OH bond
Hormones are secrete by the endocrine glands, endocrine cells and neurons.
hormones enter blood streams and arrive at a target cell and binds to the receptors.
2 classes of hormones are steriod hormones and non – steriod hormones
Steriod hormones: Testostorone and estrogen are examples
- Lipid soluble, cant pass through cell membrane
Non steroid hormones: peptide (protien) hormones, Not lipid soluble
All hormones bind to protien receptors
Protien is also called the Gene product
CHECK THE DIAGRAM FOR BOTH STERIOD AND NON STERIOD SYSTEMS Endocrin system: secretes hormone directly into bloodstream.
Major hormone secreting organs are hypothalmus, pituatary gland, pineal gland,
theyroid gland, parathyroid gland.
Between 12-17 final growth spurt occurs, where HGH hormone inc
- direct production o