The parathyroid gland, which secretes parathyroid hormone, is an organ comprising mainly tissue
a. nervous
b. muscle
c. connective
d. epithelial
d
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Tendinous intersections
a. attach the rectus abdominis muscles to the xiphoid process b. divide the rectus abdominis muscles into segments c. separate the abdominal wall from the thigh d. are the sites where blood vessels exit the abdomen into the thigh e. are the central point of attachment for all the abdominal muscles
The spontaneous opening of sodium channels marks the beginning of ____ of a myocardial cell
A. depolarization B. repolarization C. hyperpolarization D. isopolarization E. afterpolarization
If the zygote splits into two separate cells,
A. identical twins result. B. fraternal twins result. C. dizygotic twinning occurs. D. both cells die. E. paternal twins result.
Growth hormone (GH) hypersecretion causes gigantism when it begins in childhood, but it is more likely to cause ________ when it begins in adulthood
A) goiter B) Cushing syndrome C) Graves disease D) myxedema E) acromegaly