Human Reproduction

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

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

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

The main function of the placenta is to :

• allow direct exchange of blood between the mother and fetus for nutrition.

• facilitate gas and nutrient exchange between the fetus and mother.

• support the weight of the developing fetus in the uterus.

• store gases and nutrients for later delivery to the fetus.

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

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. If the areas labeled A were completely blocked on both sides, the most likely result would be that

• egg production would stop

• sperm production would stop

• fertilization would not occur

• an embryo would develop

Tags

NGSS.HS-LS1-2

Which statement best describes an important

process carried out by structure X (placenta)

• 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.

The diagram represents the reproductive systems of the human female and male. In which two structure are the gametes made

• B and E

• B and H

• H and E

• D and G

The diagram below represents some stages of early embryonic development. Which process is represented by the arrows in the diagram?

• meiosis

• Mitosis

• Fertilization

• Evolution

Tags

NGSS.HS-LS1-4