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        | The human somatic (body) cell contains |  | 
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        | n is the fusion of male and female germ cells to form zygote |  | 
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        | The spermatozoa and ova, collectively called |  | 
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        | are required to have half as many chromosomes |  | 
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        | The process that produces germ is called |  | 
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        | are required to have half as many chromosomes |  | 
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        | the pigment cells of the skin |  | 
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        | , smooth muscle cells of the cardiovascular system |  | 
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        | hormone-secreting cells of the |  | 
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        | congenital disorders and diseases, which are collectively termed |  | 
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        | hair follicle is a multilayered region of the outer root sheath called the |  | 
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        | derived from mesoderm and is known as |  | 
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        | reflecting its origin from neuroectoderm. |  | 
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        | remains adjacent to the neural tube and notochord |  | 
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        | cavitates to form a space (coelom) |  | 
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        | the cavity lines the body wall and gut |  | 
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        | is relocated to a position on the dorsal wall of the coelom |  | 
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        | which gives origin to a segmented mass of muscle |  | 
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        | which eventually contributes to two adjacent vertebrae and their disks |  | 
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        | which gives rise to the connective tissue of the skin overlying the somite |  | 
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        | undergoes massive expansion to form the forebrain, midbrain, and hindbrain. |  | 
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        | eight bulges, known as ___ which play an important role in the development of the head |  | 
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        | infiltrate and push away the extraembryonic endodermal cells of the hypoblast |  | 
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        | extends forward from the primitive node |  | 
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        | develops as a thickening within the ectodermal layer at the rostral end of the embryo. |  | 
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        | delineate a deepening midline depression, the |  | 
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        | changes occur in the mesoderm adjacent to the tube and the notochord. |  | 
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        | this paraxial mesoderm breaks into segmented blocks called |  | 
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        | The fertilized egg initially undergoes a series of rapid divisions that lead to the formation of a ball of cells called the |  | 
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        | will be pushed to one pole because of fluid accumulation |  | 
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        | embryoblast differentiate into a two-layered disk called the |  | 
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        | is key in development from the initial axial (head-to-tail) specification of the embryo through its segmentation. |  | 
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        | contain a similar region of 180 nucleotide base pairs |  | 
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        | A growth factor produced by one cell and acting on another is described as |  | 
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        | The process of a cell that recaptures its own product is known |  | 
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        | describes the division of somatic cells |  | 
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        | Fertilization is the fusion of male and female germ cells to form |  | 
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        | Term 
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        | n is the fusion of male and female germ cells to form zygote |  | 
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        | Term 
 | Definition 
 
        | are required to have half as many chromosomes |  | 
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 | Definition 
 
        | The spermatozoa and ova, collectively called |  | 
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        | Begins in puberty in males |  | 
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        | form the wall of the developing organism of periphery |  | 
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        | tall columnar cells, floor of the amniotic cavity |  | 
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        | small cuboidal cells, roof of the secondary yolk sac |  | 
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        | surrounded by flattened cells (Heusser’s membrane) |  | 
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        | formed by the accumulation of fluid |  | 
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        | boundary of primitive streak |  | 
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        | found on the surface of the ectoderm |  | 
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        | V shaped groove on the surface of the ectoderm |  | 
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        | Forms the wall of the conceptus; protective in nature |  | 
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        | segmented block of mesodermal cells |  | 
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        | a slight enlargement of the endodermal and ectodermal cells at the head (cephalic or rostral) end of the embryo (axis of the embryo) |  | 
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        | not embedded in any part (uterine wall) |  | 
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        | – contains the following enzyme:  Hyaluronidase  Acrosin |  | 
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        | 3-4 days after fertilization |  | 
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        | Inner covering which is thicker of the ovum |  | 
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        | Will release one ovum (settles in the distal part of the ampulla) |  | 
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        | opens into distal aspect to the ovary |  | 
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        | direct response to hormones produced by the ovary |  | 
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        | a direct response to pituitary gonadotropins |  | 
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        | restores proliferation of the uterine mucosa that was sloughed off as a result of menstruation |  | 
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        | is produced by trophoblastic cells maintains the function of the corpus luteum |  | 
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        | Hypothalamus - Produces hormones which is called |  | 
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        | If the 21st pair has a defect, it results into a |  | 
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        | DNA is first replicated during the |  | 
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        | dentinogenesis imperfecta |  | Definition 
 
        | an autosomal dominant genetic defect |  | 
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        | Follicle Simulating Hormone |  | Definition 
 
        | Stimulates ovarian follicle to ripen and produce its hormone
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