Tag: human physiology

The method of sterilization is tubectomy (female) or vasectomy (male). While loop, IUD and diaphragm are temporary way to keep time gap between two children.

Bartholin's glands are a part of the female reproductive tract. These are present on either side of the vagina are small in size. These glands secrete mucus to keep the vagina lubricated. These glands are analogous to the bulbourethral glands of the males. So, the correct option is 'On either side of the vagina in humans'.

A. The release of ovum occurs first, followed by fertilization, implantation in the uterus, gestation in which the foetus develops and then childbirth. So, the correct order is Ovulation, Fertilization, Implantation, Gestation, Childbirth

• Estrogen is secreted by follicles on the ovaries and is also secreted by the corpus luteum after the egg has been released from the follicle and from the placenta.
•  Follicle-stimulating hormone (FSH) stimulates the ovarian production of estrogens by the granulosa cells of the ovarian follicles and corpora lutea.
  
• Hence estrogen is secreted by Ovaries.
• So, the correct answer is 'Ovaries'.

In a typical menstruation cycle, both LH and FSH attain a peak level in the middle of cycle (about 14th day). Rapid secretion of LH leading to its maximum level during the mid-cycle called LH surge, induces rupture of Graafian follicle and thereby the release of ovum (ovulation). The ovulation (ovulatory phase) is followed by the luteal phase during, which the remaining parts of the Graafian follicle transform as the corpus luteum. The corpus hemorrhagicum ("bloody body") is a temporary structure formed immediately after ovulation from the ovarian follicle. After the trauma heals, the subsequent structure is called as the corpus luteum (which in turn becomes the corpus albicans before degenerating). The corpus luteum assumes endocrine function and secretes large amounts of progesterone hormone which is essential for maintenance of the endometrium. Such an endometrium is necessary for implantation of the fertilised ovum and other events of pregnancy.

In most of the higher plants and animals including humans, the male gamete is small and motile, whereas, female gamete is large and immotile. The female gamete contributes both the genetic material as well as cytoplasm during zygote formation as compared to this the male gamete does not contribute cytoplasm but provides only half the genetic complement. Hence, major cell organelles like mitochondria and chloroplasts show cytoplasmic or maternal inheritance pattern. Thus, the correct answer is option C.

The release of an egg from the ovary is called ovulation. This process occurs in the ovulatory phase of the menstrual cycle when the secondary oocytes forms Graafian follicle which then ruptures to release the ovum. The ovulation in human females occurs under the influence of luteinizing hormone LH.