Unit 4 Exam

A fertilized egg undergoes several stages before it is successfully implanted. The diagram below shows these stages as the fertilized egg travels through the female human reproductive system. In which of the following structures of the female human reproductive system is the blastocyst implanted during normal human development?

• ovary

• uterus

• vagina

• amniotic sac

The drinking of alcoholic beverages by a pregnant woman is harmful to the development of her fetus. Why is this most damaging early in a pregnancy?

• the lungs of the fetus become functional

• alcohol can easily enter the mouth of the fetus

• many of the essential organs of the fetus are forming

• the fetus cannot excrete wastes

Sexual reproduction is vital to the propagation of the Human race. Which of the following sequences represents the correct order of events in the formation of a human fetus?

• Zygote → Blastocyst → Embryo → Fertilization

• Fertilization → Zygote → Blastocyst → Embryo

• Blastocyst → Embryo → Differentiation → Zygote

• Fertilization → Growth → Differentiation → Zygote

Spermatogenesis (meiosis) is the process by which sperm develop and mature. Which of the following sequences correctly describes the anatomical path of spermatozoa from formation to ejaculation?

• testes, vas deferens, prostate, urethra

• testes, urethra, prostate, vas deferens

• prostate, vas deferens, testes, urethra

• prostate, urethra, testes, vas deferens

In which of the following structures of the female human reproductive system is the blastocyst implanted during normal human development?

• Ovary

• uterus

• vagina

• amniotic sac

A reproductive system is represented in the diagram below. Which structure is correctly paired with its reproductive function?

• A – pathway of gametes

• C– production of sperm

• D– regulation of homeostasis

• B– synthesis of progesterone

The diagram below represents structures found in the female reproductive system. What would most likely occur if the areas labeled A were completely blocked on both sides?

• egg production would stop

• sperm production would stop

• fertilization would not occur

• an embryo would develop

Which statement best describes an important

process carried out by structure X?

• Milk passes from the mother to the fetus

• Material are exchanged between fetal and maternal blood.

• Maternal blood is converted into fetal blood

• Oxygen diffuses from fetal blood to maternal blood.

Which statement about the gametes represented

in the diagram below is correct?

• They are produced by females

• They are fertilized in an ovary.

• They transport genetic material

• They are produced by mitosis

Which statement best describes blood pressure?

• The force applied by the heart and amount of blood pumped determine blood pressure.

• It’s normal and healthy to have extended periods of high blood pressure.

• Your blood pressure is higher when you sleep.

• Being nervous can decrease your blood pressure.