During embryonic development, which of the following structures actually differentiates into the embryo?
1. | Morula | 2. | Blastocyst |
3. | Inner cells mass | 4. | Trophoblast cells |
The direct cause of ovulation during the menstrual cycle is:
1. | A sharp fall in the levels of estrogen |
2. | A dramatic rise in the secretion of FSH |
3. | The beginning of the secretion of progesterone |
4. | A surge in the secretion of LH |
The ducts of the seminal vesicles in humans:
1. | join the vas deferens to form the ejaculatory duct |
2. | open into the ejaculatory ducts which continue into the urethra |
3. | join each other and the common duct opens into the prostatic duct |
4. | transport the stored sperms to the outside through the urethra |
In humans, the process of spermatogenesis in males and oogenesis in females are similar in:
1. | Age at which the processes begin |
2. | The number of resultant haploid cells |
3. | Cytokinesis |
4. | Occurring in respective primary sex organs |
1. | Menstrual → Follicular → Secretory → Ovulatory |
2. | Menstrual → Follicular → Ovulatory → Secretory |
3. | Ovulatory → Follicular → Secretory → Menstrual |
4. | Menstrual → Secretory → Follicular → Ovulatory |
1. | The placenta | 2. | The fetus |
3. | Maternal ovary | 4. | Maternal pituitary |
To induce uterine contractions for parturition, which of the following hormones can be injected into the female?
1. | hCG | 2. | Estrogen |
3. | Progesterone | 4. | Oxytocin |
Which of the following hormones is not secreted by the human placenta?
1. | hCG | 2. | hGH |
3. | hPL | 4. | Progesterone |
The milk produced during the initial few days of lactation, called colostrum, is essential for the newborn as colostrums contains:
1. | a Large amount of glucose | 2. | Anti-infective antibodies |
3. | Fats | 4. | Various hormones |
The signals of fetal ejection reflex originate from:
1. Maternal pituitary
2. Maternal hypothalamus
3. Fully developed fetus and placenta
4. Fetal pituitary