Identify the FALSE statement.
A) Gametogenesis begins in the female fetus.
B) Androgens control the development of reproductive organs in the male fetus.
C) Estrogens control the development of the reproductive organs in the female fetus.
D) Meiosis is never completed in most oocytes.
E) Females have one less active chromosome than males.
C) Estrogens control the development of the reproductive organs in the female fetus.
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Cells of the stomach that secrete HCl are ________ cells
Fill in the blanks with correct word
A signal molecule that is secreted into the external environment, instead of into the blood, is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Answer the following questions true (T) or false (F)
1. The eye contains two cavities situated within the anterior chamber. 2. An astigmatism is an irregular curvature of the cornea or lens which causes rays of light to refract unevenly. 3. Rods are concentrated in the fovea centralis while cones are absent from this region of the retina.
Which structure(s) contain(s) receptors sensitive to linear acceleration?
A. semicircular ducts B. cochlear duct C. utricle D. tympanic membrane