×
Get Full Access to Precalculus: Mathematics For Calculus - 6 Edition - Chapter 10 - Problem 40
Get Full Access to Precalculus: Mathematics For Calculus - 6 Edition - Chapter 10 - Problem 40

×

# Find the complete solution of the system, or | Ch 10 - 40

ISBN: 9780840068071 161

## Solution for problem 40 Chapter 10

Precalculus: Mathematics for Calculus | 6th Edition

• Textbook Solutions
• 2901 Step-by-step solutions solved by professors and subject experts
• Get 24/7 help from StudySoup virtual teaching assistants

Precalculus: Mathematics for Calculus | 6th Edition

4 5 1 241 Reviews
28
4
Problem 40

Find the complete solution of the system, or show that the system has no solution.x 2y 3z 22x y 5z 14x 3y z 6

Step-by-Step Solution:
Step 1 of 3

Vertebrate Reproductive System +Origin + Maturation of Germ Cells ­ Primordial Germ Cells­ arise from yolk sac +Vertebrate Gonads (ovary/ testis) ­ Arise from a pair of “genital ridges” along dorsal wall of embryo; migrate ❖ Male Reproductive System +Gonads­ testis (testes) ­Develop in abdominal cavity and then descend into scrotum ­Seminiferous Tubules: coiled tubules in testes ­Leydig Cells​ Secrete testosterones ­Sertoli Cell: located in Seminiferous tubules, provide nourishment to sperm and cells associated with sperm development +Male Duct system Epididymis: ­Large portion of duct where all seminiferous tubules enter ­Sperm storage and maturation (swimming ability) ­Defected sperm resorbed here Vas Deferens: ­Rapid sperm transport Ejaculatory Duct​: ­Rapid sperm transport ­Junction of Vas deferens and seminal vessel Urethra ­Conducts sperm and urine ­Transport tube within copulatory organ Copulatory Organ: Penis w/Urethra Accessory Glands: ­Sperm does not pass through these structures ­Secretions into male duct system +Seminal Vesicle: ­Secretes protalands (stimulate muscle contraction within the uterus) and fructose(short term nutrition for sperm) +Prostate Glands: ­Secretes lubricated liquid +Bulbourethral Glands: ­Secretes more lubrication, directly into urethra Hormonal Control of Male Reproductive System At Puberty: Hypothalamus secretes LH­RH and FSH­RH → to Pituitary which stimulates release of FSH and LH to transport to→ Gonads FSH (follicle stimulating hormone) initiates sperm production in seminiferous tubules + LH (luteinizing hormone) stimulates leydig cells to secrete testosterone→ ➢ Testosterone: Required for development and maintenance of male reproductive system +Secondary (2 degree) sex characteristics: ­ Increase bone density ­ Increase skeletal muscle mass ­ Thicken vocal chords ­ Slower vibration response in vocal chords Spermatogenesis Series of stages for sperm development Spermatozoan Head: ­Contains nucleus ­Capped by acrosome (contain enzyme that penetrates egg) Midpiece: ­Abundant mitochondria ATP production ­Necessary for swimming Tail: ­Flagellum for swimming ★ Female Reproductive System +Ovary (gonad) site off: ­ Egg production (ovum) ­ Hormone Secretion: estrogen/progesterone +At puberty: ­About 400,000 ova per ovary (primordial ova) ­Primordial cells producing ova (eggs) form during embryonic development Oogenesis: Steps to producing eggs +Oviduct (uterine tube) ­NOT attached to ovary, overhanging it ­Normale site of fertilization +Uterus ­Site where fertilized egg implants itself ­Attached by placenta ­Endometrium (Inner lining) will thicken up and build tissue with vessels and capillary beds ­If fertilization occurs and becomes implanted to uterine wall, then Endometrium continues to develop, release hormones from both sides of placenta from mother + fetus will maintain placenta connection ­If NO fertilization occurs and no implantation, endometrium sloughs off and discharged from body +Cervix ­Distal end of ovary/ entry of uterus +Vagina ­Receptacle for penis during copulation ­Birth Canal +Vulva ­External genitalia ­Labia Majora ­Labia Minora ­Clitoris Analogous: ­Similar functions ­Bird wings analogous to mosquito wings Homologous: ­Similar origin ­Bird wings and human arms are homologous ­Labia Majora: Scrotum ­Clitoris: Penis Hormonal Control of Female Reproductive System At Puberty: Hypothalamus releases FSH­RH and LH­RH→ Pituitary then secretes FSH and LH which get transported to → Gonads (ovary) Ovarian Follicle= ovum (egg) + surrounding cells ­Variable stages of maturation ­Follicle cells secrete→ estrogen + progesterone Estrogen: ­Formation and maintenance of female reproductive structure ­More adipose tissue Corpus Luteum: ­Remnants of follicles after Ovulation (release of egg) ­Called “yellow body” ­Secretes Progesterone Progesterone: ­Promoting gestation (pregnancy) ­Promoting long term build of Placenta + Uterine wall ­Induces uterine lands to secrete tissue and blood vessels +Timing of Reproduction ­Involves environmental cues + hormonal activity ­Most mammals: Estrous cycle ­Monestrous (deer, bears) 1 heat a year ­Diestrus (dogs) 2 heat a year ­Polyestrous (rodents, rabbits) Too many a year ❖ Menstrual Cycle: 28 day uterine cycle +Ovarian Effects ­ Days 1­13: Follicular Phase (FSH Hormone) building up the follicles and cells ­ Day 14: Ovulation (LH Hormone) stimulate release of progesterone ­ Day 15­28: Luteal (LH Hormone) +Uterine Effects (menstrual) ­ Days 1­5: Menstrual phase where endometrium sloughs off, discharged loss of blood ­ Days 6­14: Proliferative Phase where estrogen increased to the buildup endometrium for preparation of fertilization ­ Days 15­28: Secretory Phase where progesterone increased to cause uterine glands to produce more tissue/blood flow

Step 2 of 3

Step 3 of 3

#### Related chapters

Unlock Textbook Solution