BSC 1010 - General Biology I

Reproductive Systems


Reading Assignment: POHS Chapter 39 - Animal Reproduction; pp. 857-881.

Self Quiz: 1-10

Applying Concepts: 1 - 4


Lecture Outline

Asexual reproduction
	advantages and disadvantages
	distribution
	modes
		budding
		regeneration
		parthenogenesis

Sexual reproduction
	gametogenesis
		spermatogenesis
			testis
			spermatogonia
			primary spermatocytes
			secondary spermatocytes (plasmodia)
			spermatids
			sperm
				acrosome

		oogenesis
			ovary
			oogonium
			primary oocyte
			secondary oocyte and first polar body
			ootid and second polar body (bodies)
			ovum

Mating
	dioecious  vs. monoecious (hermaphroditic)
		simultaneous vs sequential hermaphroditism
	
Fertilization
	external
	internal
		copulatory organs:  penis, vagina/cloaca
		spermatophores	

Vertebrate reproductive systems
	"fish"
	amphibians
	amniotes

	oviparous
	viviparous - has evolved over 100 times among vertebrates
		lecithotrophic - embryos draw nutrients from yolk of ovum; ovoviviparity
		matrotrophic - embryos draw nutrients from mother

Mammalian/Human reproductive system

	male reproductive system
		testes - within scrotum; spermatogenesis is heat sensitive
			seminiferous tubules
			Serotli cells
			Leydig cells
		epididymis
		ductus deferens
		urethra
		accessory glands
			seminal vesicles
			prostate
			bulbourethral glands
		penis
		emission vs ejaculation

Female reproductive system

	ovaries
	uterus
		oviduct (uterine tubes)
		cervix
		endometrium
	vagina
	vulva
		labia majora and minora
		clitoris

	ovarium cycle
		follicle - primary oocyte and follicular cells
		ovulation
		corpus leuteum
		associated hormones:  GnRh, FSH, LSH

	uterine cycle
		associated hormones:  estrogen, progesterone

Fertility control

?	What population event occurred in October of 1999?

	behavioral methods
	barrier methods
	preventing ovulation
	preventing implantation
	abortion
	sterilization
	
Overview of gestation
	implantation
		blastocytes
		placenta
			umbilical cord
	first trimester (embryo)
	second trimester (fetus)
	third trimester
	parturition

Topics not covered in lecture for which you will be responsible:

	Hormonal control of male sexual function - p. 868
	Four phases of human sexual response - pp. 872-3
	Reproductive technologies and infertility - p. 876
	STD - pp. 876-77