During endochondral ossification the primary center of ossification forms due to :
a. osteoblasts invading a fibrous membrane
b. osteoblasts interacting with an embryonic cartilage
c. increased mechanical stress on the diaphysis
d. osteoclast action on spongy bone
Answer: b. osteoblasts interacting with an embryonic cartilage
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Diphthongs which are produced with a central vowel as the offglide are referred to as
a) phonemic diphthongs b) falling diphthongs c) centering diphthongs d) rising diphthongs
After childbirth, lochia lasts for
A. 3-4 days. B. 2-3 weeks. C. 3-5 months.
The detrusor muscle
A) moves urine along the ureters by peristalsis. B) compresses the urinary bladder and expels urine through the urethra. C) functions as the internal urinary sphincter. D) functions as the external urinary sphincter. E) surrounds the renal pelvis.
Which of the following structures secretes a fluid containing viscous, sticky mucus that is released prior to ejaculation and functions primarily as a lubricant?
a. The prostate gland b. The bulbourethral glands c. The epididymis d. The seminal vesicles