Extra - Male Reproductive Anatomy Flashcards
What is the male reproductive organ?
The testes
What are the 4 main accessory male reproductive organs?
The penis, vas deferens, seminal glands and prostate gland
Is the internal urethral sphincter in the male bladder neck voluntary or involuntary?
Involuntary
Is the male external urethral sphincter voluntary or involuntary?
Voluntary
What is the most anterior organ in the pelvis?
The bladder
When the bladder is empty, what does it lie posterior to?
The pubic bone
In males, what lies inferior to the bladder?
The prostate gland
In males, what lies posterior to the bladder?
The rectum
What structures form the trigone of the bladder?
2 ureteric orifaces and the internal urethral oriface
The bladder wall is formed of which muscle?
The detrusor muscle
What is the internal urethral sphincter composed of?
Detrusor muscle
When does the internal urethral sphincter contract and what is the purpose of this?
During ejaculation, to prevent retrograde ejaculation
Where do the testes develop? Where do they end up?
On the posterior abdominal wall / in the scrotum
During their descent, the testes descend through the anterior abdominal wall within what structure?
Inguinal canal
What are the structures contained within the spermatic cord?
Testicular artery and vein, lymphatic vessels, vas deferents, cremasteric muscle
Inside the scrotum the testis sit within a sac known as what? When this sac fills with fluid what is this known as?
Tunica vaginalis / hydrocele
Where are sperm produced?
In the seminiferous tubules
In the seminiferous tubules, the temperature is around 1 degree lower than the rest of the body. What structure helps to control this?
The Dartos muscle
From the seminiferous tubules within the testis, the sperm pass into where, and then where?
The rete testis, and then the head of the epididymis
The epididymis goes on to become what?
The vas deferens
The epididymis is located at what aspect of the testis?
Posterior
Where can the vas deferens be palpated?
Within the spermatic cord - in the scrotum, superiorly
The arteries supplying blood to the testes arise from where?
The abdominal aorta (lateral)
The left testicular vein drains into where?
The left renal vein
The right testicular vein drains into where?
The IVC
To get into/out of the inguinal canal, the blood supply to the testes passes through where?
The deep inguinal ring
The seminal gland produces seminal fluid which is rich in what?
Fructose
The prostate gland surrounds what structure?
The prostatic urethra
The inferior aspect of the prostate gland is in contact with what structure?
Levator ani
Most cancers arise from which zone of the prostate gland?
The peripheral zone
Complete the sentence about the route of sperm: the vas deferens passes ? in the spermatic cord, to the deep inguinal ring. At the deep inguinal ring, the vas deferens turns ? into the pelvis and travels ? to the bladder
Superiorly / medially / posterior
The right and left ejaculatory ducts join together where?
At the prostate gland
The anatomical position of the penis is what?
Erect
The root of the penis is laterally attached to which bone of the pelvis?
Ischium
Which cylinders of erectile tissue are located posteriorly in the penis?
The right and left corpus cavernosum
The corpus cavernosum transmit what structure?
The deep artery of the penis
The corpus spongiosum transmit what structure?
The spongey urethra
Which type of erectile cylinder expands distally to form the glans penis?
The corpus spongiosum
The blood supply to the penis is primary via what? Which branches from what? Which branches from what?
Deep arteries of the penis / internal pudendal artery / internal iliac artery
Blood supply to the scrotum is via the anterior scrotal artery which branches from where? And the posterior scrotal artery which branches from where?
External iliac artery / internal pudendal artery
Lymph from the scrotum and most of the penis (except the glans) drains to which nodes?
Superficial inguinal
Lymph from the testes drains to which nodes?
Lumbar/para-aortic nodes
