Test Paper 7
Teck Yew Chin, Susan Cheng Shelmerdine, Akash Ganguly, Chinedum Anosike in Get Through, 2017
Which of the following statements is incorrect as regards the anatomy and imaging findings of the seminal vesicles and vasa deferens? The seminal vesicles are located posterior to the bladder and distal ureters.Normal seminal vesicles appear hypointense and hyperintense on T1W imaging and T2W imaging respectively.The seminal vesicle joins the distal portion of the vas deferens, becoming the ejaculatory duct, and then drains into the prostatic urethra.The distal portions of the seminal vesicles and vas deferens are intraperitoneal.The seminal vesicles initially increase in volume with age, but then steadily reduce in size with advancing age.
Pelvis and perineum
David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings in McMinn’s Concise Human Anatomy, 2017
to the symphysis pubis and inferior to the bladder, and the ureter passes through it.The seminal vesicles and the ductus deferens are located laterally to the prostate and the ejaculatory ducts they form enter the urethra from a lateral position.The prostate has a groove on its posterior surface, inferior to the seminal vesicles, which is palpable on rectal examination.The membranous urethra passes through the prostate gland and has openings for the ejaculatory ducts and the 12 ducts from the gland itself.Sitting on the pelvic diaphragm, the prostate is located inferior to the body of the pubis.
The Prostate and Benign Prostatic Hyperplasia
Anthony R. Mundy, John M. Fitzpatrick, David E. Neal, Nicholas J. R. George in The Scientific Basis of Urology, 2010
An average urologist spends about 30% of his or her time dealing with problems related to the prostate. Surprisingly, for a structure that attracts so much of our attention, we know very little about why the prostate is there and what it does. It is one of four accessory sex glands or pairs of glands; the other three are the seminal vesicles, Cowper’s glands, and the glands of Littre. If we know little about the prostate, we know even less about the others. The seminal vesicles, which are secretory glands and not storage organs for semen as their name implies, contribute substantially to the volume of seminal fluid and produce one or two substances that we know about, notably fructose and glyceryl phosphocholine. However, the other two structures are something of a mystery. The embryological development of these organs reflects notable gender-specific differences and contrasts substantial species-specific differences in the structural and functional development of the mammalian male genital tract.
Development, evaluation, pharmacokinetic and biodistribution estimation of resveratrol-loaded solid lipid nanoparticles for prostate cancer targeting
Published in Journal of Microencapsulation, 2022
Alok Nath Sharma, Prabhat Kumar Upadhyay, Hitesh Kumar Dewangan
When cells in the body begin to grow out of control, called as cancer. Cancer cells can develop in practically any part of the body and spread to other parts of the body. When cells in the prostate gland begin to grow out of control, prostate cancer develops. The prostate gland is only found in men. It produces some of the fluid found in sperm (Ostrom et al.2014). The prostate is located beneath the bladder (a hollow organ that stores urine) and in front of the rectum (the last part of the intestines). Seminal vesicles, located just behind the prostate, produce the majority of the fluid for semen. The urethra, the tube that transports urine and sperm out of the body through the penis, runs through the prostate’s core. Older males and non-Hispanic Black men are more prone to acquire prostate cancer. Men aged 65 and up account for about 6 out of every 10 instances. It is a diverse disease, with incidence rates ranging from 6.3 to 83.4 per 100,000 individuals around the world (Wang et al.2012).
Correlation of the Grade Group of Prostate Cancer according to the International Society of Urological Pathology (Isup) 2014 Classification between Prostate Biopsy and Radical Prostatectomy Specimens
Published in Cancer Investigation, 2021
Serkan Akan, Caner Ediz, M. Cihan Temel, Ferhat Ates, Omer Yilmaz
Open radical retropubic prostatectomy was performed in all patients with the patient in dorsal decubitus and Trendelenburg position. After routine lower midline incision, endopelvic fascia was opened and the puboprostatic ligaments were divided. The dorsal venous complex was controlled and the urethra was exposed meticulously. We used the electrocautery minimally in these steps in order to protect the nerves and the erectile function. The prostate was dissected from the rectum posteriorly with blunt and sharp dissection. The seminal vesicles and the ejaculatory ducts were identified. The lateral prostate pedicles were ligated separately with 2/0 Vicryl sutures. The bladder neck was opened near the prostate tissue and the prostate was resected. Bladder neck was reconstructed if needed. The urethrovesical anastomosis was constructed with a Foley catheter placed and the catheter was removed on the postoperative day 14.
Aluminum reproductive toxicity: a summary and interpretation of scientific reports
Published in Critical Reviews in Toxicology, 2020
Robert A. Yokel
Spermatozoa travel from the seminiferous tubule lumen through efferent ductules to enter the head of the epididymis, a long, coiled tube (duct) on the backside of each testis that transports and stores the spermatozoa. The epididymis is composed of its initial segment and head (caput) which is characterized by its thick epithelium, body (corpus), and tail (cauda), where spermatozoa are stored. Within the epididymis, sperm mature while gaining mobility. During sexual arousal, contractions force the sperm into the vas deferens. The vas deferens is a long, muscular tube that travels from the epididymis into the pelvic cavity to transport mature sperm to the urethra in preparation for ejaculation. Seminal vesicles are sac-like pouches attached to the vas deferens. They produce fructose that provides sperm with an energy source and assists the sperms’ motility. Seminal vesicle fluid provides most of the ejaculate volume.
Related Knowledge Centers
- Bladder
- Epithelium
- Peritoneum
- Semen
- Ejaculation
- Rectum
- Ejaculatory Duct
- Vas Deferens
- Vesiculodeferential Artery
- Sexually Transmitted Infection