what are male gametes? - Correct Answer -Sperm
What are female gametes? - Correct Answer -Secondary oocytes
Embryonic period? - Correct Answer -From fertilization through the eighth
week of development
Fetal period?
...
what are male gametes? - Correct Answer -Sperm
What are female gametes? - Correct Answer -Secondary oocytes
Embryonic period? - Correct Answer -From fertilization through the eighth
week of development
Fetal period? - Correct Answer -Begins at week 9 and continues on until birth
Describe the first trimester? - Correct Answer -The first trimester is from
conception to 13 weeks. This period is very critical to babies health due to
the extensive oran-system development, and baby is most vulnerable to
teratogens.
Describe the second trimester? - Correct Answer -14 weeks to 27 weeks.
Baby begins to develop human like features
Describe the third trimester? - Correct Answer -28 weeks to 40 weeks. Rapid
fetal growth, fetus doubles in weight.
Cleavage of zygote - Correct Answer -Mitotic division after fertilization
Day 1: two-cell stage
Day 2: four-cell stage
Day 3: eight-cell stage
Day 4: morula
Day 5: blastocyst
Day 6: Implantation in uterine wall
FIGURE 29.5
What factors stimulate the thirst center in the hypothalamus? - Correct
Answer -Increased blood osmolarity(more solutes)
Decreased blood volume
Decreased blood pressure
Dry mouth
What does a decreased blood pressure stimulate in the kidneys? - Correct
Answer -Stimulates the release of renin, which increases angiotensin II
formation, leading to increased thirst, increased water intake, and increased
blood volume, and increased blood pressure
What are the two main solutes in extracellular fluid and in urine? - Correct
Answer -Na+ and Cl-
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