24 Hr Chick Reviewer

EMBRYOLOG DEVELOPMENT OF THE CHICK EMBRYO 24-HR CHICK EMBRYO

-appear' (ra#'!*ce#( *#)er (e 6icro'cope o+e) (o (e (i##e'' o$ (e &!a'(o)er6/

WHOLE MOUNT Area opaca -peripera! re"io# o$ cic% &!a'(o)i'c -'*ro*#)' (e area pe!!*ci)a -i# )irec( co#(ac( +i( (e ,o!%re#)er' (e area opa.*e/ -)i0ere#(ia(e) -)i0ere#(ia(e) i#(o 1 o#e'3 Peripera! o#e --56ar"i# o$ "ro+(7 --ce!!' a8e pro!i$era(e) pro!i$era(e) o8er (e ,o!% +9o &eco6i#" a)ere#(/ :o#e ;*#c(io# --i#(er6e)ia(e re"io# --ce!!' c*( $ree $ro6 ,o!% a#) a))e) (o area pe!!*ci)a I##er o#e --5"er6 +a!!7 --ce!!' ori"i#a(e $ro6 o#e  ;*#c(io# co#(ai#' ,o!% "ra#*!e'/ --6ar%' (ra#'i(io# $ro6 area opaca (o (e area pe!!*ci)a -area )e8e!op' i#(o 2 re"io#'3 Area opaca 8a'c*!o'a -I##er re"io# o$ area opaca -Tic%e#i#"' o$ (e 'p!a#c#ic 6e'o)er6 $ro6 &!oo) i'!a#)' Area opaca 8i(e!!i#a -o*(er re"io# o$ (e area opaca -i#i(ia!!, !ac%' &!oo) i'!a#)'9&!oo)   8e''e!' Area pe!!*ci)a -ce#(ra! re"io# o$ (e &!a'(o)i'c -+ere pri6i(i8e '(rea% $or6' -!ie' )irec(!, o8er (e '*&"er6i#a! ca8i(,

-2 !a,er' o$ &!a'(o)er63 epi&!a'( epi&!a'( o*(er  o*(er !a,er/ --+i!! )i0ere#(ia(e )i0ere#(ia(e i#(o ec(o)er6 a#) 6e'o)er6 ,po&!a'( i##er !a,er/ Pri6i(i8e '(rea% -!o#"i(*)i#a! c!e$( $or6e) o# '*r$ace o$  a6#io(e &!a'(o)i'c co#8er"e#ce o$ ce!!'/ -"a'(r*!a(io# -"a'(r*!a(io# &e"i#' a' epi&!a'( ce!!' 6i"ra(e (o+ar)' a#) i#(o (e '(rea% Pri6i(i8e "roo8e -ce#(ra! $*rro+ o$ (e (ic%e#i#" Pri6i(i8e ri)"e' -6ar"i#' o$ (e pri6i(i8e '(rea% -' #o)e Pri6i(i8e %#o(/ -(ic%e#e) area a( a#(erior e#) o$ (e =(rea% -(ro*" +ic ce!!' i#8a"i#a(e (o $or6 No(ocor) -Ho6o!o"o*' (o )or'a! !ip o$ (e &!a'(opore i# a6pi&ia# e6&r,o'/ Proa6#io# -a#(erior (o )e8e!opi#" a8ia# e6&r,o -'*rro*#)i#" (e ea) -e#)o)er6 a#) ec(o)er6 -$a(e3 +i!! &e i#8a)e) +i( 6e'o)er6 ? &eco6e i#corpora(e) i#(o a6#io# Ne*ra! $o!)'

-6ar"i#' o$ (e #e*ra! p!a(e a&o*( (o $*'e a( (e 6i))or'a! re"io#/ Ne*ra! "roo8e -6e)ia# !o#"i(*)i#a! "roo8e -$or6e) &, ro!!i#" *p o$ (e #e*ra! p!a(e Hea) $o!) -$o!)e) re"io# o$ (e &!a'(o)er6 -)ar% cre'ce#(ic !i#e -&o*#)ar, o$ (e ea)' o$ (e e6&r,o No(ocor) -!o#"i(*)i#a! &a#) o$ ce!!' e@(e#)i#" ca*)a! -$ro6 re"io#' o$ #e*ra! $o!)' (o e#'e#>' #o)e Fore"*( -'( par( o$ )i"e'(i8e (rac( -)e#i(e