quiz 10 (bsc2086l)

final review

Sperm develop from stem cells called

spermatogonia

The extraembryonic membrane that gives rise to the urinary bladder is the

allantois

A primary spermatocyte matures into ________ spermatids having ________ chromosomes.

four; 23

The process of spermiogenesis produces

spermatozoa

Secondary spermatocytes each contain

23 chromosomes

The period of gestation when the rudiments of all major organ systems are established is the ________ trimester.

first

Each of the following statements concerning oogenesis is true, except that

about half the oogonia complete mitosis between birth and puberty

The extraembryonic membrane that forms blood is the

yolk sac

When spermatogonia divide, the daughter cells are called

Spermatocytes

During meiosis I, maternal and paternal chromosomes fuse together during the process called ________ to form a ________

synapsis; tetrad

Ectoderm is to ________ as mesoderm is to ________

neural tissue; muscle tissue

The cells that are formed during spermatogenesis by the first meiosis are called

secondary spermatocytes

What is the development fate of label “9”?

forms the embryo

Identify the structure labeled "5."

amniotic cavity

Identify the structures labeled "4."

polar bodies

Identify the structure labeled "6."

amnion

Identify what process is occurring at the structure labeled "13."

implantation

Identify the stage labeled "12."

Blastocyst

Identify the stage labeled "8."

advanced morula

Identify the structure labeled "3."

umbilical cord