Menstrual flow results in the discharge of
a. the follicle.
b. the corpus luteum.
c. the endometrial lining.
d. surface cells from the vagina.
e. blood from the blood vessels on the outer
surface of the uterus.
Answer: c
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Indicators that a headache can be the presenting symptom of a serious illness and may require neuroimaging include all of the following except:
A. headaches that occur periodically in clusters. B. increasing frequency and severity of headaches. C. headache causing confusion, dizziness, and/or lack of coordination. D. headache causing awakening from sleep.
Individual skeletal muscle cells are packed with cylindrical contractile elements about 1 mm in
diameter called
a. muscle fibers. b. sarcomeres. c. tendons. d. ligaments. e. myofibrils.
Four of the five answers listed below are related by a common source. Select the exception
a. calcitonin b. sex hormones c. cortisol d. epinephrine e. aldosterone
The first colonizers of bare rock are often:
a. angiosperms b. lichens c. mycorrhizae d. sac fungi e. zygote fungi