Sex Determination and Differentiation in Humans
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Questions and Answers

Which chromosome primarily determines biological sex in humans?

  • Neither X nor Y chromosome
  • Y chromosome (correct)
  • X chromosome
  • Both X and Y chromosomes

What is the primary factor responsible for the formation of male genitalia during development?

  • Absence of both ovaries and testes
  • Presence of functional ovaries
  • Presence of functional testes (correct)
  • Presence of both ovaries and testes

What is the primary function of the ovaries in human females?

  • Both production of germ cells and secretion of sex hormones (correct)
  • Neither production of germ cells nor secretion of sex hormones
  • Production of germ cells only
  • Secretion of sex hormones only

Which hormones are responsible for the appearance of adult male or female characteristics during adolescence?

<p>Both gonadotropins and sex hormones (C)</p> Signup and view all the answers

Which of the following statements about sex hormone secretion is correct?

<p>Both androgens and estrogens are secreted in both sexes (D)</p> Signup and view all the answers

What is the primary hormone secreted by the ovaries?

<p>Estrogens (A)</p> Signup and view all the answers

Which hormone is responsible for preparing the uterus for pregnancy?

<p>Progesterone (A)</p> Signup and view all the answers

What is the primary function of inhibin B in the endocrine system?

<p>Inhibiting FSH secretion (A)</p> Signup and view all the answers

Which hormone, when secreted by the ovaries during pregnancy, aids in loosening the pubic symphysis ligaments?

<p>Relaxin (A)</p> Signup and view all the answers

In postpubertal females, what is necessary for menstruation, pregnancy, and other reproductive functions to occur?

<p>Sequential secretion of gonadotropins (B)</p> Signup and view all the answers

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