Presentation on theme: "Lab 10: Reproductive System. Endocrine Review What is the structure that transports hormones from the hypothalamus to the posterior pituitary gland? What."— Presentation transcript:
Endocrine Review What is the structure that transports hormones from the hypothalamus to the posterior pituitary gland? What is the function of parathyroid hormone?
Digestive Review What 2 structures are linked by the esophagus? Name two specialized structures in the digestive tract that increase the surface area available for reabsorption.
Announcements Next week- Final Lab Practical Review Lab Reports Due Today Final Lab Practical regular lab time two weeks from today.
Sexual vs. Asexual Reproduction What is sexual reproduction? Compared to asexual reproduction –Advantages –Disadvantages
Chromosomes and “n” What is “n”? –Number of copies of each chromosome Difference between “n” and chromosome number. –Humans have 23 pairs of chromosomes –Humans are 2n –Humans have a total of 46 chromosomes
Gametes and Zygotes Gametes –1N sex cells –Product of meiosis Zygote –2N fusion of gametes –Product of fertilization
Meiosis vs Mitosis Meiosis –Reduction division –Sexual division and formation of gametes Mitosis –Somatic cell division –Chromosome “n” number same in starting cell and end products
Sex organs and characteristics Primary Sex Organs Secondary Sex Organs Secondary Sex Characteristics
Overview- Male Reproductive Anatomy Testis Epididymis Vas Deferens Prostate Gland Seminal Vesicle Bulbourethral Gland Penis Urethra Glans Penis
Scrotum Testis –Produce Sperm Epididymis –Stores Sperm and allows to mature Vas deferens –Connects epididymis to the seminal vessicles –Smooth muscles transport sperm to pelvic cavity
Semen Semen: fluid ejaculated by the male Components: –Sperm: 10% of semen –Prostrate Gland: 30% of semen –Seminal vesicle: 60% of semen –Secretions from the Bulbourethral gland Secretes fluid that lubricates tip of penis Neutralizes acid pH from urine
Penis –Delivers semen to the vagina Urethra –Tube that delivers semen out of body –What other system is this a part of??? Glans penis –Swollen head of the penis
Ovarian Cycle (Egg maturation) Follicular –Lasts about 14 days –First 3-5 days menstruation –Developing oocytes held in follicle, polar bodies die Ovulation –Day 14 –Oocyte released from follicle Luteal –About 14 days –Oocyte held in corpus luteum
Menstrual Cycle Proliferative –Rebuilding of endometrial tissue by mitosis Secretory –Thickening of endometrial tissue caused by secretion of nutrient-rich fluid Menstration –Blood, serous fluid and tissue discharge