10) the _________ begins to develop about 11 days after conception, and is the sole
source of fetal nutrition from the end of week 12 until birth.
a. yolk sac
b. placenta
c. amnion
d. trophoblast
e. blastocyst
11) which of the following lists levels of human structure from the most complex to the
simplest?
a. organelle, cell, tissue, organ, organ system
b. organ system, organ, cell, tissue, organelle
c. organ system, organelle, tissue, cell, organ
d. organ system, organ, tissue, cell, organelle
e. organ, organ system, tissue, cell, organelle
12) a myofilament that runs throught the core of a thick filament and anchors it to a z
disc is called a(n) __________.
a. myofibril
b. thin filament
c. t tubule
d. sarcolemma
e. elastic filament
13) the fastest rate of mitosis happens in the __________.
a. stratum basale
b. stratum spinosum
c. stratum granulosum
d. stratum lucidum
e. stratum corneum