30 Questions
Which accessory gland's secretion typically makes up about 70% of the ejaculate?
Seminal vesicles
What is the major energy source for sperm in the ejaculate?
Fructose
Which gland surrounds the urethra below the bladder?
Prostate gland
Which gland contracts its smooth muscle at ejaculation?
Prostate gland
Which component of the seminal vesicles' secretion stimulates activity in the female reproductive tract?
Prostaglandins
What type of epithelial cells line the folds of the seminal vesicles' tube?
Simple columnar
Which gland's secretion allows semen to coagulate after ejaculation?
Prostate gland
What is the approximate weight of the prostate gland?
20 g
Which gland's secretion is an exocrine one?
Seminal vesicles
What is the nature of the fibers present in the lamina propria of seminal vesicles?
Elastic fibers
What is the role of parasympathetic stimulation in the process of penile erection?
Relaxes the trabecular smooth muscle
What is the initial trigger for penile erection?
External stimuli to the CNS
What happens during ejaculation with regards to the helicine arteries?
They constrict
How does penile erection lead to tumescence and rigidity in erectile tissue?
By compressing the dorsal veins
What is the function of arteriovenous shunts in penile erection?
Connect central arteries and dorsal veins
Which type of nerve stimulation controls penile erection?
Autonomic nerves
What happens to blood flow during sympathetic stimulation in penile anatomy?
Blood flow decreases into cavernous spaces
What causes the veins to drain most blood from the erectile tissue?
Constriction of smooth muscle
What part of erectile tissue experiences decreased pressure during ejaculation?
Trabecular smooth muscle
What is the function of tunica albuginea during penile erection?
Blocks venous outflow by compressing dorsal veins
Where do ducts from individual glands empty into?
Prostatic urethra
Which zone of the prostate surrounds the superior portion of the urethra?
Transition zone
What is the main function of prostate-specific antigen (PSA)?
Liquefy coagulated semen
What is the prostate-specific antigen (PSA) a marker for when present in elevated levels?
Prostate cancer
What are corpora amylacea found in the lumens of prostatic tubuloacinar glands composed of?
Primarily deposited glycoproteins and keratan sulfate
What is the main function of bulbourethral glands during erection?
Secrete a clear mucus-like lubricating secretion
Which part of the penis is surrounded by skin and lined with pseudostratified columnar epithelium?
Corpus spongiosum
What is the function of the tunica albuginea that surrounds the corpora cavernosa?
Provide structural support
What is the role of the trabeculae within the erectile tissues?
Separate venous cavernous spaces
Where are the bulbourethral glands located?
In the urogenital diaphragm
Learn about the structure and function of the seminal vesicles, prostate gland, and bulbourethral glands in the male reproductive system. Understand the histology and secretory nature of the seminal vesicles.
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