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EXAM II: BIOLOGY 309

Terms

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The ____ sex organs of a male are the paired testes, which are suspended within the sacs of the scrotum.
primary sex organs
sperm produced by the testes are stored w/in the ____. Then they enter a ___ ___, which tranports them to an ___tract.
epididymis; vas deferens; ejaculatory duct
The ejaculatory ducts enter the ____.
urethra
The ___in males is a part of the both the urinary system and the reproductive system.
urethra
The primary sex organs of a male are the ____ ___, which are suspended within the sacs of the scrotum.
paired testes
The testes are the primary sex organs because they produce ____and the male sex hormones(____).
sperm; androgens
At the time of ___, sperm leave the penis in a fluid called semen, which is also called (___ ____).
ejaculation; seminal fluid
These (3) vesicles and glands add secretions to semen.
-seminal vesicles
-prostate gland
-bulbourethral glands (Cowper glands)
The ___vesicles are lateral to the vas deferens, and their ducts join to form an ejaculatory duct.
seminal vesicles
The___gland is a single, donut-shaped gland that surrounds the upper portion of the urethra just inferior to the bladder.
prostate
___glands are pea-sized organs that lie inferior to the prostate on either side of the urethra.
bulbourethral
Each component of semen seems to have a particular ___.
function
sperm are more viable in a ___solution, and semen, which is milky in appearance, has a slighly ___pH (about ___).
basic; basic; 7.5
semen contains the sugar ___, which presumably serves as an ___source.
fructose; energy
semen also contains ___, chemicals that cause the uterus to contract. Uterine contractions help __________.
prostaglandins; propel the sperm toward the egg.
prostate enlargement is common in ___ ___. (young men? old men?)
older men
prostate enlargement is also known as ___ ___ ___. ? (check)
benign prostate hyperplasia
prostate enlargement can stemp from
prostate cancer
prostate enlargement increases pressure on ____, resulting in increased back-up of urine from bladder, potentially back ureter into kidneys.
urethra
during sexual arousal, ___nerve impulses cause erectile tissue to fill w/ blood.
autonomic
contractions that expel seminal fluid from the penis are part of the ___ and ___manifestations of the male orgasm.
physiological and psyhcological
Around ___ ___sperm (#) are contained in 3.5 ml. of semen.
400 million sperm

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