1. | Cleavage divisions in early embryonic stages are mitotic divisions. |
2. | Embryo with 4-8 cells is called as morula. |
3. | Implantation occurs at the stage of blastocyst. |
4. | Placenta acts as an endocrine tissue and produces some hormones. |
1. | About 200 seminiferous tubules are present in testis lobule |
2. | Epididymis is located along the anterior surface of each testis |
3. | Vas deferens ascends to the abdomen and loops over the bladder |
4. | Ducts of seminal vesicles open at the urethral meatus |
1. | Secondary follicle | 2. | Tertiary follicle |
3. | Morula | 4. | Blastocyst |
The hormone, essential for maintaining pregnancy, secreted in large amounts by the corpus luteum is:
1. | Estrogen |
2. | Progesterone |
3. | LH |
4. | FSH |
1. | Infundibulum possesses fimbriae |
2. | Fertilization takes place in the narrowest part of fallopian tube called ampulla |
3. | Isthmus joins the uterus |
4. | It is lined with ciliated epithelium |
1. | A very low level of progesterone and oestrogen secretion by the corpus luteum |
2. | Secretion of high levels of FSH by the corpus luteum |
3. | LH surge just before ovulation |
4. | Low levels of both FSH and LH levels |
1. | At the time of insemination |
2. | At puberty |
3. | At the time of fusion of a sperm with an ovum |
4. | Just before birth |