Each ejaculatory duct is formed by the union of the vas deferens with the duct of the seminal vesicle. They pass through the prostate, and open into the urethra at the seminal colliculus. During ejaculation, semen passes through the prostate gland, enters the urethra and exits the body via the urinary meatus. Answer : (c)

Answer : (b)

There is no growth of daughter cells during Cleavage Answer : (d)

Sterilization is a procedure that closes or blocks your fallopian tubes. Sterilization is a safe form of birth control. It has a low risk of death and complications. Answer : (b)

The sole function of fimbriae is to help transport an ovulated egg from the ovary into the fallopian tube. The fimbriae are vital to fertilization of the egg and can become damaged, leading to infertility. Answer : (d)

Amnion is helpful to embryo in protection from shock Answer : (b)

The Graafian follicle begins to form deep inside the ovary, stimulated by FSH as the oestrous cycle develops, gradually enlarging and maturing as it moves to the surface, eventually appearing like a blister on the surface, just prior to release of the oocyte (ovulation) by rupture of the wall. After ovulation the follicle becomes a corpus luteum. Progesterone is a hormone released by the corpus luteum in the ovary. Answer : (c)

The human corpus luteum is a temporary endocrine gland that develops after ovulation from the ruptured follicle during the luteal phase. It is an important contributor of steroid hormones, particularly progesterone, and is critical for the maintenance of early pregnancy. Answer : (c)

The clitoris forms from the same tissues that become the glans and shaft of the penis, and this shared embryonic origin makes these two organs homologous (different versions of the same structure) Answer : (b)

The part of fallopian tube closest to the ovary is infundibulum. Infundibulum possess finger-like projections called fimbriae that help in collection of ovum after ovulation. Answer : (a)

Secondary oocyte completes second meiotic division if fertilized to form mature ovum (23 chromosomes) and polar body (23 chromosomes). Answer : (a)

Answer : (a)

Answer : (b)

Answer : (d)

Fraternal twins or dizygotic twins or non-identical twins are developed from separate fertilized ova which are genetically distinct and not necessarily of the same sex. They occur when two fertilized eggs are implanted in the uterus wall at the same time. Answer : (c)

Hormone control of female reproductive system Answer : (c)

The testis in the male, and the ovary in the female, are called the primary sex organs. All others are called secondary sex organs, divided between the external sex organs—the genitals or genitalia, visible at birth in both sexes—and the internal sex organs Answer : (c)

Answer : (a)

From one primary spermatocyte, 4 spermatids are formed after one mitotic and 1 meiotic division. Therefore, for the formation of 32 spermatids 8 meiotic division are required. Answer : (b)

Ectopic pregnancy is when a pregnancy grows outside of your uterus, usually in fallopian tube Answer : (b)

Remarkable peculiarity of the fertilizins and antifertilizins is that they combine in a specific manner; that is, the egg fertilizin of a particular species reacts best with the sperm antifertilizin of the same species. Answer : (d)

In mammals (except marsupials), the chorion develops a rich supply of blood vessels and forms an intimate association with the endometrium (lining) of the female’s uterus. Chorion and endometrium together form the placenta Answer : (a)

Luteinizing hormone (LH) is an important hormone both men and women produce. This hormone is known as a gonadotropin, and it affects the sex organs in both men and women. For women, it affects ovaries, and in men, it affects the testes. LH plays a role in puberty, menstruation, and fertility. It don’t have a stimulating effect on the mammary gland (non-mamotropic) Lactotrophic A protein hormone of the anterior lobe of the hypophysis that stimulates the secretion of milk and possibly, during pregnancy, breast growth. Luteinising hormone produced by gonadotropic cells. Answer : (c)

Wolffian ducts (WDs) are the embryonic structures that form the male internal genitalia.the duct of the mesonephros that persists in the female chiefly as part of a vestigial organ and in the male as the duct system leaving the testis and including the epididymis, vas deferens, seminal vesicle, and ejaculatory duct Answer : (d)

Scrotum lies outside the abdominal cavity. So, the temperature in scrotum is 2-3 degree less than the body temperature. And this temperature is required for the testis to produce sperms. So, that is why the testis descends into the scrotum. Sperms can only be produced (Spermatogenesis) when testis is descended in the scrotum. Answer : (a)

A Sertoli cell is a "nurse" cell of the testicles that is part of a seminiferous tubule and helps in the process of spermatogenesis, the production of sperm. Answer : (d)

Although the main sources of sex hormones are the testes in male and ovaries in female, there are similar hormones that secreted from the adrenal gland cortex such as the male sex hormone testosterone and female sex hormones oestrogen and progesterone. Answer : (d)

oviduct is a simple ciliated tube, lined with mucus-secreting glands that produce the jelly that surrounds the ovum. Uterine glands or endometrial glands are tubular glands, lined by ciliated columnar epithelium, found in the functional layer of the endometrium that lines the uterus. The vulva consists of the external female sex organs. The vulva includes the mons pubis (or mons veneris), labia majora, labia minora, clitoris, vestibular bulbs, There are two types of vestibular glands, both are structures found near and in the vagina : the greater, or major, vestibular glands are also known as Bartholin's glands; the lesser, or minor vestibular glands also known as Skene's glands. The Bartholin's (BAHR-toe-linz) glands are located on each side of the vaginal opening. These glands secrete fluid that helps lubricate the vagina. Vagina is devoid of gland because it is lower most part of cervix and help as birth canal only. Answer : (c)

Human chorionic gonadotropin (hCG) is a hormone produced by cells that are surrounding a growing embryo (syncitiotrophoblast initially), which eventually forms the placenta after implantation Answer : (c)

Placental transfer of maternal IgG antibodies to the fetus is an important mechanism that provides protection to the infant while his/her humoral response is inefficient. Answer : (a)