Human Reproduction

Male Reproductive System To produce, maintain and transport sperm (male gamete) in protective fluid (semen) To discharge sperm within the female reproductive tract To produce and secrete male sex hormones

Sperm Cell Anatomy A somatic cell has 46 chromosomes. How many chromosomes does a sperm cell have?

Testes and Epididymis

Male Reproductive System

Male Reproductive System What is the function of the scrotum?

The Journey of Sperm Testes (sperm production) ↓ Epididymis (sperm storage and maturation) Vas Deferens (transport) ↓← secretions from seminal vesicles, prostate gland, cowper’s gland produce semen Urethra Ejaculation (semen ejected from penis)

Vasectomy

Female Reproductive System To produce, maintain, and transport the female egg cell to the site of fertilization. To provide a safe and favorable environment for the development of the embryo. To produce and secrete female sex hormones that maintain the menstrual cycle

Ovum (egg)

Female Reproductive System

Female Reproductive System

Female Reproductive System *Fallopian tube is an alternate term for oviduct

The Journey of Sperm…continued Vagina ↓ Cervix (mucus plug) Uterus Oviduct (site of fertilization) ↑ Ovary (egg released) If fertilization occurs the embryo implants into inner wall of uterus (endometrium).

Fertilization

Eggs mature within follicles ovum

Follicle Development Maturation of follicle Ovulation Formation of corpus luteum Deterioration of corpus luteum (menstruation)

Hormones of the Menstrual Cycle Source Target Effect Feedback Leutenizing (LH) pituitary ovary ovulation Follicle-stimulating (FSH) maturation Estrogen ovary(follicle) uterus thickening of uterine lining sexual receptivity? LH FSH (+ LH day 12-14) Progesterone ovary (corpus luteum)

ID the hormones of the menstrual cycle