A reduction in the secretion of ____ may serve as the trigger for the onset of puberty
a. inhibin
b. melatonin
c. adrenal androgens
d. gonadotropin-releasing hormone
e. pituitary gonadotropic hormones
B
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In the blood, the gamma globulin-producing leukocytes are more numerous than the leukocytes that differentiate to become macrophages
Indicate whether the statement is true or false
Why did the TSH have NO effect on the BMR of the thyroidectomized rat?
A) The rat is missing its thyroid gland. B) The rat is missing its pituitary gland. C) The metabolism of the rat is already too high. D) The metabolism of the rat is already too low.
The gonads appear as the ________.
A. urogenital folds B. labioscrotal swellings C. gonadal grooves D. gonadal ridges E. paramesonephrons
Which of the following accurately describes the thoracic duct?
a. drains a major portion of the body b. filters lymph c. drains the right side of the head, upper-right limb, and right thorax d. largest lymphatic vessel