Lab 16 Reproduction System & Embryo Development

Flashcards covering key terms and definitions related to the reproduction system and embryo development.

Spermatogenesis hormones

Luteinizing hormone (LH) stimulates Leydig cells to produce testosterone, while follicle-stimulating hormone (FSH) stimulates Sertoli cells for sperm production.

Oogenesis hormones

Luteinizing hormone (LH) triggers ovulation and corpus luteum formation, while follicle-stimulating hormone (FSH) stimulates ovarian follicle growth.

Testis (under microscope)

The organ containing seminiferous tubules where spermatogenesis occurs and Leydig cells that produce testosterone.

Ovary (under microscope)

The organ containing follicles where oogenesis occurs, ultimately producing ova.

Leydig cells

Cells located in the testes that produce testosterone, which is crucial for the development of male secondary sexual characteristics.

Function of seminal fluid

Provides a medium for sperm motility, nourishes sperm, and includes substances that help neutralize the acidity of the female reproductive tract.

Mature Graafian follicle

Contains an oocyte, the zona pellucida, and the antrum; it is involved in the ovulation process.

Parts of the blastocyst

Trophoblast (forms the placenta) and inner cell mass (develops into the embryo).

16-day embryo model

Illustrates early embryonic structures including the primitive streak and germ layers that develop into various body systems.

Primary germ layers

Ectoderm (forms skin and nervous system), mesoderm (forms muscles, bones, and circulatory system), endoderm (forms gut and internal organs).

Monozygotic twins

Twins that originate from one fertilized egg (zygote) that splits into two embryos.

Dizygotic twins

Twins that originate from two separate fertilized eggs.

Ectopic pregnancy

A pregnancy that occurs outside the uterus, commonly in the fallopian tubes.

Breech presentation

A delivery position where the baby is positioned feet-first rather than head-first.

Placenta previa

A condition where the placenta covers the internal cervical opening, potentially causing complications during delivery.