Fertilization Process

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What is the result when a haploid sperm cell joins with a haploid ovum?

A sterile zygote

A polyploid zygote

A haploid zygote

A diploid zygote (correct)

Why do most sperm cells die during fertilization?

Due to the presence of mucus

Due to the basic environment

Due to the acidic environment (correct)

Due to the presence of leukocytes

What is the purpose of capacitation in sperm cells?

To slow down the sperm

To prevent the sperm from reaching the oocyte

To increase the lifespan of the sperm

To allow the sperm to penetrate the oocyte (correct)

What happens to the plasma membrane of the oocyte after a sperm cell joins with it?

It depolarizes Signup and view all the answers

What is the function of the slow block during fertilization?

To block subsequent sperm entry Signup and view all the answers

What is the result when two oocytes are released and fertilized?

Fraternal twins Signup and view all the answers

What is the duration of the gestation period?

270 days Signup and view all the answers

During what stage of gestation is the offspring called an embryo?

Weeks 3-8 Signup and view all the answers

What is the normal weight gain during the second and third trimesters?

1 lb per week Signup and view all the answers

What is the purpose of the trophoblasts in the blastocoel?

To form the placenta Signup and view all the answers

What is the name of the hormone that prevents uterine contraction during pregnancy?

Progesterone Signup and view all the answers

Why does morning sickness occur?

Due to the decrease in peristalsis caused by high progesterone levels Signup and view all the answers

What is the purpose of an episiotomy?

To avoid tearing of the posterior vaginal wall Signup and view all the answers

What is the name of the condition where the placenta covers the opening to the cervix?

Placenta previa Signup and view all the answers

What is the role of progesterone in pregnancy?

To decrease peristalsis and cause morning sickness Signup and view all the answers

What is the purpose of the yolk sac during embryonic development?

To provide nutrients and blood cells to the embryo Signup and view all the answers

During what weeks does the placenta develop?

Weeks 4-12 Signup and view all the answers

What is the desirable position of the baby during birth?

Head down facing posterior Signup and view all the answers

What is the name of the process where the membranes wrap around each other to form a 3-dimensional structure?

Embryonic folding Signup and view all the answers

What is the name of the process by which the uterus returns to its original size after birth?

Involution Signup and view all the answers

What is the average weight of a newborn baby?

5.5-8.8 lbs Signup and view all the answers

What is the purpose of the APGAR score?

To assess the baby's overall health Signup and view all the answers

What is the name of the hormone that helps to loosen ligaments at the hip joint and dilate the cervix?

Relaxin Signup and view all the answers

What is the composition of breast milk in the first 3 days postpartum?

High in immunoglobulin Signup and view all the answers

What is the effect of breastfeeding on prolactin levels?

It increases prolactin levels Signup and view all the answers

Why do babies have a hard time regulating their body temperature?

Because they have a high surface-to-volume ratio Signup and view all the answers

Fertilization Process

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