The Miracle of Life

VT-1156 c.2 FCCJ Downtown

A&P II M/W 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


  1. According to the video, the first organized form of life was the ________, and from these one celled organisms evolved all life on Earth?
  2. The cradle of life is the _____?
  3. The only living substance able to reproduce itself “exactly” is ______?
  4. The inside of the fallopian tubes is only about ___ times as thick as a human hair, and it takes an egg ___ days to travel five inches through the length of the tube?
  5. The egg must join with the sperm within ____ to ____ hours of leaving the ovaries for conception to take place? 
  6. ____ billion human beings have lived on this planet and every year _ _ _ million new ones are born?
  7. The testicles seminiferous tubules have a total length of _ _ _ feet and one hundred million sperm can be produced within 24hrs within them?
  8.   There are 23 chromosomes in a sperm and the body considers these cells foreign, therefore sperm are protected by ____ ____, which tendrils feed protect and move the sperm closer to the transport canal of the epididymis?
  9.  The _______ secrets strands of a special form of protein mucin that form 1/100th of a mm channels that guide sperm into the uterus/fallopian tubes?
  10.  …Of the approx. 200 million sperm cells that make their journey through the upstream flow, cilia and the female defensive systems, only approximately ____ sperm cells actually reach the egg?
  11. When the sperm reaches the egg it releases a special anti-inhibition ______ to break through two layers of nutritive cells that have formed around the egg?
  12. The joint force of sperm exertion on the outer membrane of the egg puts the egg in ______ motion?
  13. The first sperm to reach the egg is drawn inside and a rapid biochemical change occurs making the membrane of the egg ________ to the other sperm?
  14. Once an egg has been fertilized, this union of still undivided gametes it is now referred to as a ______.
  15. After a rapid pace of division of the zygote, five days have passed and the fertilized egg is now called a ______ consisting of a inner cell mass, a cavity and the trophoblast?
  16. At six weeks the conception is less than ½ inch long, at _____ weeks the fetus is ¾ of an inch long with hands and fingers which it can move.  At eleven weeks it is 2 ½ inches long, at 14 weeks it can suck its _____ , and can turn in its mothers’ womb at 16 weeks? 

 

 

 

 

1-Protozoa, 2-Sea, 3-DNA, 4-two, three, 5-24hrs to 48hrs, 6-Seventy seven, 128, 7-700, 8-Nurse cells, 9-cervix, 10-fifty, 11-enzyme, 12-circular or rotating, 13-impermiable, 14-zygote, 15-blastocyst, 16-seven, thumb.