Flashcards in Chapter 26 Deck (32)
Asexual reproduction results in the generation of:
genetically identical offspring
genetic variation among offspring increases
reproductive success in changing environments
one individual with male and female reproductive systems
produces sperm and male hormones
stores sperm as they develop former
Several glands contribute to semen:
Seminal vesicles, Prostate, Bulbourethral
occurs in seminiferous tubules
divide by meiosis I to produce secondary spermatocytes
divide by meiosis II to produce spermatids which mature into sperm and are released into seminiferous tubule
contain follicles that nurture eggs and produce sex hormones
convey eggs to the uterus where embryos develop
The main reproductive structure of the male reproductive system is the _______, and all the rest of the structures are accessories.
Starting from where the sperm are created, what is the correct order of structures that the sperm pass through as they make their way outside the body?
Testes, epididymis, vas deferens, urethra
What organs regulate sperm production?
Hypothalamus, Pituitary gland, testes
The formation of sperm and egg requires:
the uterus opens into the vagina through the ____
Hormones synchronize ________ in the ovary and uterus
cyclic changes (period, menstrual cycles)
Deliberate prevention of pregnancy
The main reproductive structure of the female reproductive system is the ________, and all the rest of the structures are accessories.
Fertilization results in a:
What is the correct order of development?
Zygote, Blastula, Gastrula. (ZBG)
Gastrulation produces a:
what are the three layers of embryos?
Ectoderm, Mesoderm, Endorderm
Outside, becomes skin and nervous systems
Inside, becomes digestive tract
In the middle, becomes muscle and bone
Name 3 ways tissues and organs develop by:
-Changes in cell shape
-Programmed cell death
The embryo and placenta take place during which month of pregnany?