male reproductive 2 Flashcards
What is the main purpose of the seminal vesicles?
The seminal vesicles secrete the fluid that becomes semen.
What do the prostate and seminal vesicles produce, and what is their function?
They produce secretions that mix with sperm to form semen, which provides mobility and nutrition to sperm for fertilization.
What is the function of the male urethra?
The male urethra forms the outflow pathway for urine and seminal fluid.
How long is the male urethra and what are its three parts?
The male urethra is about 18-20 cm in length and is divided into the prostatic urethra, membranous urethra, and spongy urethra.
What are the components of the penis?
The penis is composed of a root, a body, and three columns of erectile tissue: two cavernosa and one spongiosum.
What is the function of the corpus spongiosum in the penis?
- Erection; During sexual arousal, the corpus spongiosum fills with blood, contributing to the erection of the penis.
- Sensitivity: It contains numerous nerve endings that contribute to the sensation of touch and pleasure during sexual activity.
What stimulates the seminiferous tubules to produce spermatozoa?
The follicle-stimulating hormone from the anterior lobe of the pituitary gland stimulates the seminiferous tubules to produce spermatozoa.
What are the functions of the male reproductive organs?
- The production, maturation, and storage of spermatozoa
- The delivery of spermatozoa in semen into the female reproductive tract.
here do spermatozoa become motile and where are they conveyed to?
Spermatozoa become motile in the epididymis and are then conveyed to the seminal vesicles.
What is the arterial supply to the testes
The arterial supply to the testes is provided by the testicular artery, which branches from the abdominal aorta.
How is venous drainage from the testes achieved?
Venous drainage is through the testicular vein, with the left vein opening into the left renal vein and the right into the inferior vena cava.
What is the lymphatic drainage pathway for the testes?
Lymph drainage is through lymph nodes around the aorta.
What is the nerve supply to the testes?
The nerve supply is provided by branches from the 10th and 11th thoracic nerves.
Describe the prostate gland.
The prostate gland is a chestnut-shaped gland at the base of the bladder, surrounding the first part of the urethra, with a base facing upwards and an apex directed downwards.
What are the seminal vesicles and where are they located?
The seminal vesicles are two sacs, about 5 cm in length, located on the posterior aspect of the bladder base.
