One way in which gametogenesis differs between spermatogenesis and oogenesis is that in spermatogenesis, the mature gametes lack mobility. B) Four viable haploid gametes are produced from one germ cell. C) Chromosome number is halved only after the second meiotic division. D) The germ cells are diploid.
The endometrium lining directly induces contraction and acts on the myometrium.
At the onset of labor, A) oxytocin, prolactin, prostaglandin Dl, all of the above.
Which of the following structures is INCORRECTLY matched with its function? A) Bulbourethral gland - secretion of nutrients and enzymes. B) Epididymis - sperm concentration and storage. C) Fallopian tube - common site of fertilization. D) Maternal/fetal endocrine and exchange organ - placenta.
The birth control pill, developed in the early 1960s, prevents pregnancy by A) preventing ovulation. B) stimulating thickening of the cervical mucus. C) impairing endometrial growth. D) all of the above.
Insects that develop through larval, pupal, and adult stages are considered A) hemimetabolous. B) heterometabolous. C) holometabolous. D) hypermetabolous.