Which of the following is an example of positive feedback during labor?
A) the movement of the fetus toward the cervical canal
B) the pressure the unborn exerts on the cervix
C) the distortion of the myometrium stimulates oxytocin release
D) the dilation of the cervix followed by the rupture of the amnion
E) the ejection of the placenta at the end of the placental stage
C) the distortion of the myometrium stimulates oxytocin release
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Which imaging technique is used to diagnose osteoporosis?
A. Dual-energy X-ray absorptiometry (DEXA) B. Magnetic resonance imaging (MRI) C. Positron emission tomography (PET) D. Computed tomography (CT) E. Ultrasound
As sperm travel from their site of production in the testes to the exterior, the sequence of ducts through which they will pass is
A. efferent ductules; rete testis; vas deferens; ejaculatory duct; urethra. B. rete testis; afferent ductules; ejaculatory duct; vas deferens; urethra. C. rete testis; efferent ductules; vas deferens; urethra; ejaculatory duct. D. rete testis; ejaculatory duct; efferent ductules; vas deferens; urethra. E. rete testis; efferent ductules; vas deferens; ejaculatory duct; urethra.
The ________ valve of the heart has three valves with chordae tendineae.
Fill in the blank(s) with the appropriate word(s).
Structure C is the
A) sella turcica.
B) styloid process.
C) mastoid process.
D) external auditory meatus.
E) coronoid process.