BIOS 256 Final Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) what are male gametes? - Correct Answers ✅Sperm What are female gametes? - Correct Answers ✅Secondary oocytes Embryonic period? - Correct Answers ✅From fertilization through the eighth week of development Fetal period? - Correct Answers ✅Begins at week 9 and continues on until birth Describe the first trimester? - Correct Answers ✅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 Answers ✅14 weeks to 27 weeks. Baby begins to develop human like features Describe the third trimester? - Correct Answers ✅28 weeks to 40 weeks. Rapid fetal growth, fetus doubles in weight.Cleavage of zygote - Correct Answers ✅Mitotic division after fertilization 1 / 3
BIOS 256 Final Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025)
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 Answers ✅Increased blood osmolarity(more
solutes) Decreased blood volume Decreased blood pressure Dry mouth What does a decreased blood pressure stimulate in the kidneys? - Correct Answers ✅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 Answers ✅Na+ and Cl- 2 / 3
BIOS 256 Final Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) ADH function - Correct Answers ✅ADH responds to increased osmolarity, by inserting aquaporins in late DCT and collecting ducts, which increases the permeability to water and allows for more water to be reabsorbed, decreasing blood osmolarity, increasing blood volume, increasing blood pressure What are the two most important hormones in renal reabsorption and urine regulation? - Correct Answers ✅Aldosterone and ANP When is RAAS activated? - Correct Answers ✅Decreased blood pressure or Na+ deficiency in plasma, this causes an increase in renin release which activates the RAAS system.This increases Na+ reabsorption and water reabsorption in the late DCT and collecting ducts Functions of ANP - Correct Answers ✅ANP responds to increased blood volume and increased stretch of atria of the heart, promoting natriuresis (elevated excretion of Na+ into urine). Where sodium goes, water follows, therefore there is also a loss of water, and a decrease in blood volume.What are the most abundant cation and anion of ECF? - Correct Answers ✅Na+ and Cl-
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