differentiate the frog and mammalian spermatogenesis. Spermatogenesis Frog Mammal

Q12

Fetus Inner Cell Mass Mesoderm Implantation Gastrulation Endoderm Zygote Embryo Ectoderm Blastocyst primitive germ (layers) Body Uterus Four implantation endometrium A. How does a human embryo form? Directions: Fill in the blanks below using the terms above. First, an unfertilized egg travels from the to the through the Multiple sperm traveling through the tubes will try to fertilize the egg. Once one of the sperm is successful, development begins. The divides into multiple cells on its way to the After about days, it forms a structure called a The cells inside the blastocyst, known as the will eventually develop into the and other supporting The outer cells of the blastocyst will develop into the tissues. begins when the blastocyst attaches to the Inner cell mass forms a disc, and the cells in the disc begin a process called First, some cells move inward, forming a groove on one side of the disc. This groove will determine the embryo's right-and-left body symmetry as it develops. As…

Which statement does NOT accurately describe somites?   series of tissue blocks   form the ribs and intercostal muscles   paired structures running along either side of the neural tube   derived from neural crest tissue on the ventral surface of the embryo

Vertebrate Fertilized Class Blastula or Blastocyst Late Morula Gastrula Egg Embryo Amphibian Reptile Mammal How long after ovulation does it take an embryo to develop? The resulting embryo may become the (attached) in the lining of After eight weeks of development the embryo is called the How long does it takes the fetus to develop and grow inside the mother? What is differentiation? The embryo continues dividing and form all the tissues organs and organ systems of the animal When should pregnant mother take most precaution?

Modeling the Menstrual Cycle: The menstrual cycle takes an average of 28 days to complete and repeat. There are 4 phases: Day 1-5 Menstruation (period) Day 6-14 proliferation Day 11-13 Ovulation Day 15-28 Secretory phase Task: Create and annotate a model to show what is happening in the female body during the 4 phases of the menstrual cycle. This can be done digitally or on paper. If you chose to do this on paper, just make sure it gets to Ms. B. Things to include: Arrange the phases into a cycle Include changes in hormone levels in each phase (PSH, LH, Estrogen, Progesterone) Changes in the uterine lining What is happening to the egg (follicular, ovulation, luteal phase) It might help to start with arranging the phases into a cycle and then fill in details about what is happening at each phase. Use the slideshow on this website as a resource, it's very informative Menstruation Secretory Phase Proliferative Phase Ovulation

Drawn pics

REPRODUCTIVE ANATOMY Exercise 15 Label, Color, and Discuss an Avian Reproduction System Using colored pencils, label and shade in the following structures: ovary, infundibulum, magnum, isthmus, uterus, and vagina.

Check all the answers and answe the question that isn't answered. Which step triggers release of enzymes by the head of a sperm cell which helpdissolve the zona pellucida? Step C involving the Acrosome reaction. Which step forms the fertilization membrane which disallows multiple sperm cellsfrom entering the ovum? Step A including the membrane fusion as corticalgranules are released. In what step are pronuclei formed? Step D where the sperm's head contains thenucleus and must meet the pronucleus.   At what step does the ovum complete meiosis??   Which step is the "official formation of a zygote? Step D (fusion of a nuclei).

How many follicle cells will fit inside? Is there an abundance of yolk within the cytoplasm of the mammalian oocyte? Where will the fertilized egg develop and how will it receive its nutrients? please help