XII: Chapter 3- Human reproduction Flashcards
(348 cards)
How many testicular lobules are present in each testis?
250
How many seminiferous tubules are present in each testicular lobule?
1 to 3
What lines the inside of the seminiferous tubules in humans?
Male germ cells and sertoli cells
Male germ cells in humans are called
Spermatogonia
Name the ducts of reproductive system of human males in order from seminiferous tubules to ejaculatory duct.
Seminiferous tubules -> Rete testis -> vasa efferentia -> epididymis -> vas diferens -> ejaculatory duct
Secretions of which glands help in lubrication of penis?
Bulbourethral gland
What is the length of a human ovary?
2 to 4 cm
Each ovary is covered by a thin epithelium. True/false?
True
Name the female accessory ducts.
Oviducts, uterus and vagina
The uterus is pear shaped. True/false?
False. The uterus is inverted pear shaped.
How is the uterus (in human females) attached to the pelvic wall?
Through ligaments
Name the layers of uterine wall.
Outer perimetrium
Middle myometrium
Inner endometrium
The cushion of fatty tissue covered by skin and pubic hair in the reproductive system of human females is called
Mons pubis
What are the fleshy folds which extend down from mons pubis and surround the vagina called?
Labia majora
How many mammary lobes are present in each mammary gland?
15-20
The alveoli of mammary glands open into
Mammary tubules
Mammary duct in mammary gland is formed by
All the mammary tubules of each lobe
What do the mammary ducts of mammary gland join and form?
Mammary ampulla
Secondary spermatocytes in males undergo equational division to form
Spermatids
What is the process of transformation of spermatids to spermatozoa called?
Spermiogenesis
What is spermiation?
It is the process of release of spermatozoa from the seminiferous tubule.
Luteinising hormone in males acts on which cells? What are these cells stimulated to do?
LH acts on Leydig cells and stimulates synthesis and secretion of androgens.
Which process do the androgens in male regulate?
Spermatogenesis
FSH in males acts on which cells? What are these cells stimulated to do?
FSH acts on sertoli cells and stimulates the secretion of factors which help in spermiogenesis