Human Reproduction Flashcards
Secretions of which male accessory gland helps in the lubrication of penis
Bulbourethral gland
Secretions of male accessory glands constitute of the seminal plasma which is rich in
Fructose, Calcium and certain enzymes
Seminal fluid from seminal vesicle constitute ___ percent of semen
60-70
30 percent of semen comes from the secretions of which gland ?
Prostate gland (prostatic fluid)
After some time of ejaculation, semen liquifies due to an enzyme. Name the enzyme and the gland that secretes it.
Enzyme- Profibrino
Gland- Prostate gland
Size of testis in cm
Length 4-5 cm
Width 2-3 cm
4 distinct characteristics of Human reproduction
- Sexually reproducing
- Viviparous
- Sexual dimorphism
- Unisexual
Which coating of testis covers it all around
Tunica albuginea
The human male ejaculates ___ sperms during a coitus
200- 300 million
For normal fertility __ percent of sperms must have normal shape and size and at least __ percent should show vigorous motility
60, 40
Duct formed by the fusion of duct seminal vesicle and vas deferens
Ejaculatory duct
Gland found in female reproductive tract
Bartholin gland
If mammary ducts are blocked in breasts, then milk will not be able to move from
Mammary tubule to mammary ampulla
The funnel shaped part of fallopian, tube closer to the ovary is called
Infundibulum
Capacitation takes place in the
Female reproductive tract- vagina
Capacitation refers to the change in sperm before/after fertilization
Before fertilization
Decapitation occurs in the
Epididymis
Why is the sperm decapitated
To conserve energy of sperm
A ____ mammary gland is a characteristic of ALL _________ [Ncert]
Functional, female mammals
Cells of ___ in breasts secrete milk
Alveoli
Milk is stored in the ___ of alveoli
Cavities (Lumen)
Alveoli open into the mammary ____
Tubule
Several mammary ducts join to form _____
A mammary ampulla
Mammary ampulla is connected to the_____ through which milk is sucked out
Lactiferous duct
Milk produced in the initial few days of lactation is known as
Colostrum
Colostrum contains
Antibodies essential for devolopment of resistance in new born babies
Part of the human sperm which is called as energy chamber of sperm is?
Middle piece
Process of formation of a mature female gamete
Oogenesis
Sterility is caused due to the deficiency of
Vitamin E
Vitamin required for healthy gametes
Vitamin A
Gonadotropins are secreted by
Anterior pituitary gland
Gonadotropins releasing hormone GnRH is secreted by
Hypothalamus
After fertilization secondary oocyte forms
Ovum /ootid (n) and 2nd polar body (n) (degenerates)
Maturation phase in oogenesis starts from ____ and continues till ______
Before birth, reproductive stage
First maturation division in oogenesis
Meiosis 1 (primary oocyte to secondary oocyte)