Bio 102 Final Exam Chapter 16 (Reproductive System)

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

How long is an oocyte viable once ovulated?

12-24 hours

how long is sperm viable?

6 days

When does ovulation occur?

Day 14 of the ovarian cycle

When is the proliferative phase of the uterine cycle?

Days 6-14

What happens to the corpus luteum if there is no implantation?

Degenerates and the cycle restarts

What is the life-threatening condition called if implantation occurs in the oviduct?

Ectopic pregnancy

what are the layers of the uterus and their function?

Endometrium: innermost layer: supports fertilized egg Myometrium: smooth muscle layer; during pregnancy it constricts

what is the the function of LH and FSH in women?

FSH helps egg grow LH helps release egg

What role does FSH, and LH have in the oocytes during days 1-14?

FSH: stimulates development of an immature follicle in ovary. LH: estrogen

What must occur for an oocyte to be fertilized?

Fallopian tube

what causes the corpus luteum to continue secreting estrogen and Progesterone?

Fertilization & pregnancy

What is the difference between identical and fraternal twins?

Fraternal: -ovulation of more than one oocyte, one of which is fertilized by different sperm -No more similar than any two siblings -Could be different genders Identical: -One oocyte fertilized -Split into two pre-embryos before 16-cell stage -Same gender, look alike

what is the the function of LH and FSH in males?

LH stimulates testosterone production, FSH testicular growth.

How are fraternal twins formed?

Ovulation of more than any one oocyte, fertilized by different sperm

what is the function of interstitial cells?

Produce testosterone

What is the role of the reproductive system?

Production of gametes Fertilization Development and nourishment of new individual Production of reproductive hormones

What does the corpus luteum synthesize?

Progesterone

What two hormones prevent ovulation during pregnancy?

Progesterone and estrogen

What is the function of Sertoli cells

Provide support, nourishment for sperm production

what is the function of the placenta?

Site of nutrient and gas exchange between mother and baby Filters nutrients and waste for the fetus

What are gametes and which organs make them?

Sperm cells in males Oocytes (eggs) in females

What is a mature follicle (also known as the Graafian follicle)?

Tertiary vesicular follicle

What occurs during days 14-28 in the ovary during the ovarian cycle?

The Corpus luteum secretes progesterone

What occurs during days 1-14 in the ovary during the ovarian cycles?

The Pituitary gland produces FSH (follicle-stimulating hormone)

Where does fertilization take place in mammals?

Upper third of the oviduct

What is meant by implantation?

When the embryo is implanted in uterine wall

When is the secretory phase of the uterine cycle?

days 15-28

During pregnancy, high levels of what two hormones prevent ovulation?

estrogen and progesterone

Where is sperm made and where is sperm stored once made?

made in Testes (seminiferous tubules) stored in epididymis of the testes

how are identical twins formed?

one oocyte fertilized and split into two pre-embryos before stage 16-cell stage

What makes estrogen and progesterone in females?

ovaries

What organ takes over producing estrogen and progesterone from the corpus luteum during pregnancy?

placenta

What occurs during days 1-5 of the uterine cycle?

Menstrual phase


Kaugnay na mga set ng pag-aaral

Unit 2; 1.4 What is an Environmentally Sustainable Society?

View Set

Diatonic Triads & Roman Numerals

View Set

Combo with "COM1000 Exam #2" and 1 other

View Set

Eliopoulos Chapter 16- Sexuality and Intimacy

View Set

Chapter 22 Physics- Electrostatics

View Set