Component 2.3 - Male And Female Reproductive System Flashcards
What is the function of the seminiferous tubules?
The cells lining the seminiferous tubules undergo sperm formation. The cells move towards the lumen running through the middle of the tubule.
What is the vas efferentia?
Once the sperm move through the lumen they collect in the vas efferntia, which are coiled tubes that carry spent to the epididymis
What happens in the epididymis?
The sperm remain here while they become motile.
What is the vas deferens?
The vas deferens carries the sperm from the epididymis towards the penis.
What is the function of the seminal vesicle?
They secrete mucus into the vas deferens.
Why is the mucus from the seminal vesicle necessary?
It contains a mixture of chemicals, including fructose, which is respired by the speak for energy.
What is the function of the prostate gland?
Secretes zinc-containing prostate fluid.
What are the useful aspects of the secretions of the accessory glands?
1) Maintain sperm mobility
2) Provide nutrients for the sperm including fructose, amino acids and zinc ions
3) Neutralise the acidity of any urine remaining in the urethra
4) neutralise the acidity of the vagina tract
What is the function of Sertoli cells?
They secrete a fluid, which nourishes the spermatids and protects them from the male’s immune system.
What is the function of the interstitial cells?
They secrete testosterone, the male sex hormone, which has roles in:
Sperm formation and maturation
Development of secondary sexual characteristics
What are the names and functions of the 3 layers of the uterus wall?
1) Perimetrium - thin layer around the outside
2) Myometrium - the muscle layer
3) Endometrium - it is a mucous membrane which is well supplied with blood
How can you identify the zona pellucida?
It has a dark staining
How can you tell whether it is a primary or secondary oocyte?
A secondary oocyte is surrounded by cumulus cells, which contribute to the corona radiata
