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Figure 28.1 Embryo in membranes: (A) embryo in uterus; (B) chorionic villi. Reference: Figure 28.1 In Figure 28.1, identify number 7.

Figure 28.1 Embryo in membranes: (A) embryo in uterus; (B) chorionic villi. Reference: Figure 28.1 In Figure 28.1, identify number 2.

Figure 28.1 Embryo in membranes: (A) embryo in uterus; (B) chorionic villi. Reference: Figure 28.1 In Figure 28.1, identify number 4.

Figure 28.1 Embryo in membranes: (A) embryo in uterus; (B) chorionic villi. Reference: Figure 28.1 In Figure 28.1, identify number 3.

Figure 28.2 Fetal cardiovascular anatomy. Reference: Figure 28.2 In Figure 28.2, identify number 14.

Figure 28.1 Embryo in membranes: (A) embryo in uterus; (B) chorionic villi. Reference: Figure 28.1 In Figure 28.1, identify number 10.

Whether an organism will be genetically male or female is determined by ________.

If the ovaries are removed in the first 6 weeks of pregnancy, the embryo will be aborted. If they are removed later in pregnancy, the pregnancy can go to a normal full term. Explain the difference.

The process of spermatogenesis and spermiogenesis begins with a ________ and ends with four ________.

The mechanism that keeps the testes cooler than the body’s core temperature is called descent of the testes.