Which of the following is true regarding endocrine glands?
A. They secrete substances that do not alter the metabolism of their target cells, but have extracellular effects.
B. They secrete their products by way of ducts.
C. They have an unusually low density of blood capillaries.
D. They release their secretions into the blood.
E. Their secretions may be released onto the body surface.
D. They release their secretions into the blood.
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The portion of a DNA molecule that contains the genetic information for making a protein is called a gene.
Answer the following statement true (T) or false (F)
The externally visible portions of the male and female reproductive system are referred to as ____________________
Fill in the blank(s) with correct word
A pituitary tumor interferes with FSH secretion. How would this affect a male?
A. There would be no effect as FSH is found only in females. B. He would develop a feminine body contour. C. He would produce too many sperm cells. D. He would have an erection. E. He would not produce sperm cells.
Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth?
A) Circulatory system B) Nervous system C) Respiratory system D) Muscular system E) Integumentary system