ATI RN
Human Reproductive System pdf NCERT Questions
Question 1 of 5
At what point in life does a female begin her monthly ovarian cycle?
Correct Answer: B
Rationale: The correct answer is B: At puberty. The monthly ovarian cycle, also known as the menstrual cycle, begins at puberty when a female's body matures and starts ovulating. This is typically around the age of 11-14. At birth (A), females already have all their eggs but do not start ovulating until puberty. Middle age (C) refers to the period around 40-65, which is not when the cycle begins. Menopause (D) is the cessation of the menstrual cycle, marking the end of reproductive years, typically around the age of 45-55.
Question 2 of 5
Which of the following is responsible for secondary sex characteristics in females?
Correct Answer: A
Rationale: Estrogens are responsible for secondary sex characteristics in females as they promote breast development, regulate the menstrual cycle, and contribute to the distribution of body fat. Progesterone mainly prepares the uterus for pregnancy. Follicle-stimulating hormone (FSH) plays a role in the development of ovarian follicles and the maturation of eggs but does not directly influence female secondary sex characteristics.
Question 3 of 5
This tiny gland produces a secretion that is similar to a large lysosome and that cleanses the male urethra of assists penetration of the egg is called traces of acidic urine prior to the ________.
Correct Answer: D
Rationale: The correct answer is D: bulbo-urethral gland. This gland produces a clear secretion that neutralizes traces of acidic urine, lubricates the urethra, and assists in sperm motility. The other choices are incorrect because: A: Flagellum is a structure on sperm cells for propulsion. B: Prostate produces seminal fluid but does not cleanse the urethra. C: Midpiece is a part of the sperm cell that contains mitochondria for energy production, not a gland.
Question 4 of 5
The spermatic cord houses the
Correct Answer: D
Rationale: The correct answer is D: sperm production. The spermatic cord houses the structures that support and transport sperm, including the vas deferens, blood vessels, nerves, and lymphatics. It does not produce testosterone (A), facilitate ovum fertilization (B), or contain the urethra (C). Sperm production occurs in the testes, while the spermatic cord provides the pathway for the sperm to travel from the testes to the urethra for ejaculation.
Question 5 of 5
From fertilization to week 8 of proliferative phase of the uterine pregnancy, the conceptus is called (menstrual) cycle? ________.
Correct Answer: D
Rationale: The correct answer is D: an embryo. From fertilization to week 8 of the proliferative phase of uterine pregnancy, the conceptus is referred to as an embryo. This is because during this period, the fertilized egg undergoes rapid cell division and differentiation, leading to the formation of distinct embryonic structures and the beginning of organ development. The term "fetus" is used after the embryonic stage, typically from week 9 onwards. Choices A and C, estrogens and progesterones respectively, are hormones involved in regulating the menstrual cycle and maintaining pregnancy but are not terms used to describe the developing conceptus itself during this specific timeframe.