Fertilization Process and Sperm Journey

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During which weeks does the placenta take over the endocrine function from the corpus luteum?

Weeks 12-17 (correct)

Weeks 21-30

Weeks 14-16

Weeks 9-12

What is the primary function of relaxin during pregnancy?

To stimulate the growth of mammary glands

To increase the production of thyroid hormone

To stimulate fetal development

To loosen the pelvis and dilate the cervix (correct)

What is the approximate increase in caloric intake required during the 2nd and 3rd trimesters of pregnancy?

300 calories per day (correct)

400 calories per day

100 calories per day

200 calories per day

What is the primary hormone responsible for stimulating male gonads to produce testosterone during pregnancy?

hCG Signup and view all the answers

What is the physiological response that occurs in the mother's body near the end of pregnancy due to upward pressure of the uterus?

Increased gastric reflux Signup and view all the answers

What is the term for the expulsion of the plug of mucus covering the cervix, along with a small amount of blood, that occurs about 2 days before labor?

Bloody show Signup and view all the answers

What is the primary function of the foramen ovale and ductus arterioles in the infant's heart?

To close after birth and adjust circulation Signup and view all the answers

What is the primary function of colostrum in the first 72 hours after birth?

To provide passive immunity to the infant Signup and view all the answers

What is the term for the process by which the uterus returns to its pre-pregnancy size after childbirth?

Involution Signup and view all the answers

What is the term for an individual who has a recessive gene that can be passed on to their offspring?

Carrier Signup and view all the answers

What is the term for the pair of chromosomes that determines the sex of an individual?

Sex chromosomes Signup and view all the answers

What is the term for the expression of an individual's genes?

Phenotype Signup and view all the answers

During fertilization, what is the main factor that acts as a barrier to sperm entry?

Thick cervical mucus Signup and view all the answers

What is the process called when the sperm penetrates the corona radiata and binds to a receptor in the zona pellucida?

Acrosomal reaction Signup and view all the answers

What is the term for the fertilized oocyte?

Zygote Signup and view all the answers

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

Provides nourishment to the embryo Signup and view all the answers

What is the term for the process where the fertilization membrane forms, preventing further sperm penetration?

Depolarization Signup and view all the answers

During which week of embryonic development does the conceptus reach the uterus?

Week 2 Signup and view all the answers

What is the term for the indentation in the embryonic disc where cells migrate to form endoderm or mesoderm?

Primitive streak Signup and view all the answers

What is the function of the amnion during embryonic development?

Surrounds the embryo with fluid for protection Signup and view all the answers

During which weeks of embryonic development does the placenta develop?

Weeks 4-12 Signup and view all the answers

What is the term for the pregnancy where the implantation occurs outside of the uterus?

Ectopic pregnancy Signup and view all the answers