As blood travels from arteries to veins,
A) viscosity of blood changes.
B) pressure increases.
C) diameter of the blood vessels gets progressively smaller.
D) pressure decreases.
E) flow becomes turbulent.
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Question 2) During the proliferative phase of the menstrual cycle, the
A) corpus luteum is forming.
B) functional zone of the endometrium is restored.
C) fertilized ovum implants.
D) old functional layer is sloughed off.
E) endometrium finalizes the preparation for implantation.
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Question 3) Which of the following opposes the flow of blood back to the heart?
A) vascular resistance
B) peripheral veins have valves to prevent backflow of blood
C) muscular pumps squeeze veins and move blood toward the heart
D) blood pressure
E) blood pressure gradient from arteries to veins
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Question 4) The average length of the menstrual cycle is ________ days.
A) 16
B) 19
C) 21
D) 28
E) 35
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Question 5) Calculate the net filtration pressure (NFP) with a blood hydrostatic pressure of 40 mm Hg and a blood colloid osmotic pressure of 25 mm Hg. Then determine if filtration or reabsorption occurs. NFP = ________ and results in a fluid ________.
A) 15 mm Hg; filtration
B) 65 mm Hg; reabsorption
C) 65 mm Hg; filtration
D) 15 mm Hg; reabsorption
E) -15 mm Hg; filtration
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Question 6) A rise in the blood levels of follicle-stimulating hormone at the beginning of the ovarian cycle is responsible for
A) follicle maturation.
B) menstruation.
C) ovulation.
D) menopause.
E) atresia.
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Question 7) Blood colloid osmotic pressure (BCOP) decreases in starving children because
A) starvation increases blood pressure which, in turn, decreases BCOP.
B) starvation increases the permeability of capillaries causing a decrease in BCOP.
C) starvation prevents the liver from producing enough protein to maintain BCOP.
D) malnourished children do not exercise, which results in a decrease in BCOP.
E) This statement is false; BCOP actually increases in starving children.
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Question 8) The surge in luteinizing hormone that occurs during the middle of the ovarian cycle triggers
A) follicle maturation.
B) menstruation.
C) ovulation.
D) menopause.
E) atresia.
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Question 9) Blood colloid osmotic pressure is produced by
A) large non-diffusible proteins in the blood plasma.
B) a greater salt concentration in blood cells.
C) the force of blood pushing against the vessel wall.
D) osmosis of water.
E) hypertonic solutions separated by a cell membrane.
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Question 10) Which of the following statements concerning oogenesis is false?
A) Oogenesis begins before birth.
B) Ova develop from stem cells called oogonia.
C) An ovum completes its last meiosis after it is fertilized.
D) About half the oogonia complete mitosis between birth and puberty.
E) By the time of their birth, girls have already lost about the majority of their oocytes.
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