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A&P Ch29

Reproductive System

QuestionAnswer
How many lobules are there within a testis? 200-300
How many seminiferous tubules are found in each of the lobules? 1-3
Role of testosterone? Development of the male reproductive system, Increased muscular and skeletal growth, Spermatogenesis
How many sperm cells are produced per day? About 300 million
These structures lie posterior to the bladder and anterior to the rectum and secrete an alkaline, fructose filled fluid Seminal vesicles
This structure is composed of three cylindrical masses of erectile tissue each surrounded by a fibrous tissue Penis
How much semen is typically ejaculated and how many sperm per ml? 2.5 mL of semen is typically ejaculated, with 50-150 million sperm per mL
At puberty, how many primary oocytes remain in each of a female's ovaries? About 40,000
The milk-secreting components of the mammary glands in the breasts are called Alveoli
________ hormone secreted by the ____________ controls the ovarian and uterine cycles GnRH, hypothalamus
The structure protects and regulates the temperature of the testes is the Scrotum
This structure is the site of sperm production Seminiferous tubules
These cells may eventually become spermatozoa Spermatogenic cells
These cells secrete testosterone Leydig cells
This hormone stimulates Leydig cells to secrete testosterone LH
This hormone promotes spermatogenesis Testosterone
What is the function of the epididymis? Sperm maturation
The union of the duct from the seminal vesicle and the ampulla of the vas deferens form this Ejaculatory duct
These pea-sized structures are located inferior to the prostate on other side of the urethra Bulbourethral glands
At birth, how many primary oocytes are found in each of the female ovaries? About 200,000 – 2,000,000
Which hormones do the ovaries produce? Estrogen and progesterone
This is the site of fertilization Uterine tubes
This is the portion of the uterus that opens into the vagina Cervix
Anterior to the vagina and urethral openings is the Mons pubis
The para-urethral glands on either side of the urethral orifice secrete Mucus
Which hormone stimulates milk ejection? Oxytocin
This hormone triggers ovulation LH
This hormone is secreted by the corpus luteum after ovulation Progesterone
This is the uterine phase when the endometrium is growing rapidly Proliferative phase
This is the ovarian phase between ovulation and the onset of the next menstruation Postovulatory phase
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