AP Biology : Systems Physiology
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Example Question #361 : Systems Physiology
Along with the thickening of the uterine lining, which of the following also develops during the proliferative phase of the menstrual cycle?
Fimbria
The number of oogonia
Cervical mucus
Uterine size
Cervical mucus
During the proliferative phase of the menstrual cycle, the high levels of estrogen cause the development of the uterine lining and fertile cervical mucus. This fertile cervical mucus is alkaline and thin to allow for sperm penetration.
Example Question #361 : Systems Physiology
Which of the following best describes the effect of increased progesterone levels from the use of progesterone birth control pills?
Inhibits gonadotropin-releasing hormone (GnRH)
Prevents ovulation
Inhibits follicle-stimulating hormone (FSH)
Inhibits follicle development
All of these
All of these
Progesterone birth control pills function to increase progesterone levels in the individual. This inhibits the secretion of gonadotropin-releasing hormone (GnRH), which, in turn, inhibits luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion. The drops in LH and FSH levels halt follicle development, thereby preventing ovulation.
Example Question #363 : Systems Physiology
Which of the following sets of two hormones are found in combination birth control pills?
Progesterone and estrogen
Gonadotropin-releasing hormone (GnRH) and estrogen
Luteinizing hormone (LH) and progesterone
Follicle-stimulating hormone (FSH) and gonadotropin-releasing hormone (GnRH)
Progesterone and estrogen
Combination birth control pills contain estrogen and progesterone. Supplementing progesterone levels inhibit luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion, follicle development, and ovulation. Estrogen supplementation decreases FSH, thereby inhibiting follicle development and ovulation. The combination pill decreases breakthrough bleeding but has more withdrawal symptoms.
Example Question #364 : Systems Physiology
Which of the following is not a method esed to test fertility?
Ovulation predictor kits
Monitoring the cervical mucus
Pituitary gland testing
Calendar tracking
Pituitary gland testing
Common methods of fertility testing include: calendar tracking, ovulation predictor kits, and monitory physical symptoms. Calendar tracking determines fertility by cycle length. Ovulation predictor kits measure luteinizing hormone (LH) levels in an individual’s urine. Monitoring physical symptoms such as cervical mucus and basal body temperature are also a good method of tracking fertility.
Example Question #1334 : Ap Biology
Which of the following best describes when a female most fertile during the menstrual cycle?
Follicular phase
Ovulation and a few days preceding it
3 days after menstruation
During menstruation
Ovulation and a few days preceding it
During the menstrual cycle, the time when fertility peaks is at ovulation and a few days preceding it. At this point, sperm can survive in the female reproductive tract until oocyte release.
Example Question #1335 : Ap Biology
Which of the following is true for female individual’s with “amenorrhea”?
No ovulation
Heavy menstrual flow
Light menstrual flow
Irregular menstrual cycles
Irregular menstrual cycles
Amenorrhea is a condition where menstrual cycles are irregular and rare, occurring every 3 to 6 months.
Example Question #365 : Systems Physiology
Which of the following is not indicative of a menstrual disorder?
Heavy flow
Ovulation occurs midway through the cycle
Ovulation does not occur
Irregular cycles
Ovulation occurs midway through the cycle
Menstrual disorders include a heavy flow (menorrhagia), irregular cycles (amenorrhea, polymenorrhea, metrorhagia, and oligomenorrhea), and no ovulation (anovulation).
Example Question #1337 : Ap Biology
Which of the following is true regarding menstrual cycles in individuals living in the developing world?
Thicker cervical mucus
Age of menarche is later
Age of menarche is earlier
Higher hormone levels
Age of menarche is later
There are variations in the age of menarche by geographic location and environmental conditions. In developing countries, the age of menarche is later than in industrialized nations.
Example Question #1338 : Ap Biology
The endometrium is a membrane in which of the following female reproductive parts?
Cervix
Ovary
Vagina
Uterus
Uterus
The endometrium is a mucus membrane in the uterus of the female reproductive tract. The endometrium changes thickness based on hormone levels and is shed during the menstrual cycle if fertilization does not occur.
Example Question #365 : Systems Physiology
During which of the following pregnancy stages can the mother begin to feel fetal movement?
Third trimester
First trimester
Second trimester
Fetal movement cannot be felt during pregnancy
Second trimester
Human pregnancy can be divided into three trimesters, each categorized by different symptoms and stages of fetal development. During the second trimester of pregnancy, which occurs between 13 and 28 weeks, fetal movement can be felt. This is often called “quickening,” which is the stirring of the fetus.
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