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Question 1
Incorrect
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Fetal blood is returned to the umbilical arteries & the placenta via the:
Your Answer: Inferior vena cava
Correct Answer: Hypogastric arteries
Explanation:In the foetus, the hypogastric artery ascends along the side of the bladder, and runs upward on the back of the anterior wall of the abdomen to the umbilicus, converging toward its fellow of the opposite side. Having passed through the umbilical opening, the two arteries, now termed umbilical, enter the umbilical cord, where they are coiled around the umbilical vein, and ultimately ramify in the placenta.
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This question is part of the following fields:
- Physiology
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Question 2
Incorrect
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Which of the following is suggestive of ovulation:
Your Answer: Day 21 oestrogen level is elevated
Correct Answer: Regular cycle with dysmenorrhea
Explanation:Ovulation in the menstrual cycle usually occurs over 4 days. There is an increase in basal body temperature at the time of ovulation due to the effect of progesterone.
A high Day 21 progesterone level indicates ovulation and the release of an egg.
Dysmenorrhea is described as painful menstruation. The symptoms start at the time of ovulation and persist till menstruation.
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This question is part of the following fields:
- Physiology
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Question 3
Correct
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What is the normal pH value of an umbilical arterial sample of a new born term baby?
Your Answer: 7.2
Explanation:The normal range for a term baby is pH: 7.18 – 7.38, and preterm pH: 7.14 – 7.4. A pH below 7.1 therefore indicates acidosis.
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This question is part of the following fields:
- Physiology
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Question 4
Incorrect
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During normal pregnancy, a weight gain is anticipated. The average weight gain is approximately:
Your Answer: 15-20 kg
Correct Answer: 10-15 kg
Explanation:Institute of Medicine Weight Gain Recommendations for Pregnancy: Recommends a gestational weight gain of 16.8–24.5 kg (37–54 lb) for women of normal weight, 14.1–22.7 kg (31–50 lb) for overweight women, and 11.3–19.1 kg (25–42 lb) for obese women.
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This question is part of the following fields:
- Physiology
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Question 5
Correct
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Changes in the urinary tract system in pregnancy include:
Your Answer: Increase in the glomerular filtration rate (GFR)
Explanation:Pregnancy involves remarkable orchestration of physiologic changes. The kidneys are central players in the evolving hormonal milieu of pregnancy, responding and contributing to the changes in the environment for the pregnant woman and foetus. The functional impact of pregnancy on kidney physiology is widespread, involving practically all aspects of kidney function. The glomerular filtration rate increases 50% with subsequent decrease in serum creatinine, urea, and uric acid values.
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This question is part of the following fields:
- Physiology
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Question 6
Incorrect
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When does ovulation occur?
Your Answer: Immediately after LH surge
Correct Answer: 36 hours after LH surge
Explanation:Ovulation occurs in the mid stage of the menstrual cycle, usually 36 hours after the LH surge. It is this LH surge which is necessary for the ovulation to occur.
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This question is part of the following fields:
- Physiology
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Question 7
Incorrect
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Which of the following statements is true regarding heart rate in pregnancy?
Your Answer: Heart rate increases by 25 beats per minute
Correct Answer: Heart rate increases by 15 beats per minute
Explanation:During the first 12 weeks of pregnancy, cardiac output increases by about 30-50%. To maintain this increase, systemic vascular resistance decreases by 20-30%, while stroke volume and the heart rate increase by 25-30% and 15 beats per minute respectively.
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This question is part of the following fields:
- Physiology
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Question 8
Correct
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Question 9
Correct
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During the inflammatory phase of wound healing what is the predominant cell type found in the wound during days 3-4?
Your Answer: Macrophages
Explanation:PMNs phagocytise debris and kill bacteria via free radicals (AKA respiratory burst). They also break down damaged tissue. PMNs typically undergo apoptosis after 48 hours. They are then engulfed and degraded by macrophages. Macrophages therefore become the predominant cell type in the wound on days 3-4.
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This question is part of the following fields:
- Physiology
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Question 10
Correct
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The resting pulse in pregnancy is:
Your Answer: Increased by 10 to 15 bpm
Explanation:During pregnancy cardiac output increases by 30 to 50%. As a result, the resting pulse speeds up from a normal of about 70 bpm to 80 or 90 bpm.
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This question is part of the following fields:
- Physiology
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SESSION STATS - PERFORMANCE PER SPECIALTY
