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Chapter 27

Reproductive System

QuestionAnswer
What are the male primary sex organs? testes
What are the female primary sex organs? ovaries
What are the three accessory reproductive organs? ducts, glands, external genitalia
What is the male sex hormone? testosterone
What are the female sex hormones? estrogen, progesterone
The males gonads (testes) produce ____ and lie with the ____? sperm; scrotum
Sperm are delivered to the exterior through a system of ducts, what are the four parts of the duct system (in order from proximal to distal)? 1.epididymis 2.ductus deferens 3.ejaculatory duct 4.urethra
What are the three male accessory glands? 1.seminal vesicles 2.prostate 3.bulbourethral glands
What is the function of the male accessory glands? Empty their secretions into the ducts during ejaculation
The external position of the scrotum keeps the testes ___C lower that the core body temp. Why? 3; sperm production
___ months before birth the testes leave the pelvic cavity and enter the scrotum? 2
_____ is the failure of the testis to make their normal descent
The ____ ____ encloses nerve fibers, blood vessels and contains the ductus deferens? spermatic cord
The ____ ____ produce sperm? seminiferous tubules
What are the three main parts of the penis? 1.root 2.shaft or body 3.glans penis
Internally, the penis contains the ____ urethra and ___ long cylindrical bodies of erectile tissue? spongy; three
The midventral erectile body, the ____ ____ surrounds the urethra? corpus spongiosum
The paired dorsal erectile bodies, called the ____ ____ make up most of the penis? corpora cavernosa
What are the three parts of the epididymis? head, body, tail
At the epididymis (motile/nonmotile) sperm enter and pass through it and become (motile/nonmotile)? nonmotile; motile
Upon ejaculation the epididymis contracts, expelling sperm into the next segment of the duct system, the ____ ____? ductus deferens
What is another name for the ductus deferens? vas deferens
The ____ ____ runs in the spermatic cord through the inguinal canal into the pelvic cavity, at the back of the bladder it expands and joins the duct of the seminal vesicle to form the ejaculatory duct? ductus deferens
The ejaculatory duct enters the ____ urethra? prostatic
What are the three regions of the urethra? 1.prostatic 2.membranous 3.spongy (penile)
The seminal vesicles secrete ___ % of the volume of semen? 60%
____ and ____ ____ mix in the ejaculatory duct and enter the prostatic urethra during ejaculation? sperm, seminal fluid
The ____ gland encircles the prostatic urethra inferior to the bladder? prostate
The ____ glands are pea-sized glands to the prostate and produce think clear mucus prior to ejaculation that neutralizes traces of acidic urine in the urethra? bulbourethral
____ is a milky white mixture of sperms and accessory gland secretions? semen
Semen contains ___-___ million sperm/ml? 50-130
____ of the penis occurs from engorgement of erectile tissue with blood? erection
____ is the propulsion of semen from the male duct system? ejaculation
Erection is a (sympathetic/parasympathetic) reflex and locally the chemical ____ ____ (___) to be released? parasympathetic; nitric oxide (NO)
What is the funtion of nitric oxide (NO)? Causes the arterioles to dilate and allow the erectile tissue to get engorged with blood
Ejaculation is under (sympathetic/parasympathetic) control? sympathetic
____ is the sequence of events that produce sperm in the seminiferous tubules of the testes? spermatogenesis
We have (one/two) sets of chromosomes? two-one maternal one paternal
The normal chromosome number in most body cells is referred to as the ____ ____ ____ of the organism, and is symobolized as ____, in humans this number is ____? diploid chromosomal number; 2n; 46
Created by: kmking
 

 



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