Exam 21: Development and Aging

The development of an embryo involves four processes. Match each process to its description. -embryo undergoes rapid change in shape and form

Many sperm entering the vagina are killed by the acidic secretions of the female reproductive tract.

The zona pellucida and corona radiata are associated with which one of the following?

During the first four days of development following fertilization, cells of the embryo undergo rapid cleavage, but the size of the embryo remains the same.

In humans, fertilization usually occurs ________ after intercourse, if an egg is present.

Maturation of the reproductive organs and the reproductive response is called

The development of an embryo involves four processes. Match each process to its description. -cells take on a certain structure and function

Match the special structures of the fetal cardiovascular system with their descriptions. -opening located between the right atrium and the left atrium

Adolescence is marked by maturation of the reproductive organs and the human sexual response, an event known as ________.

Which one of the following embryonic features is the forerunner of the brain and spinal cord?

For fertilization to occur in humans, the sperm cells have a long journey to complete before reaching an egg. If a sperm reaches an egg, fertilization is still not complete. What events must happen for fertilization to be complete?

Insertion of a thin tube through the vagina into the uterus to sample fetal tissue is called ________.

The first four days of human embryonic development occur in the

As an adult human ages, the blood vessels lose their elasticity, and blood pressure drops as dilation occurs.

Match each organ to the germ layer from which it develops. Answers may be used more than once. A) endoderm B) ctoderm C) ectoderm D) mesoderm -skeletal muscle

All of the following processes are associated with embryonic development EXCEPT which one?

Match each organ to the germ layer from which it develops. Answers may be used more than once. A) endoderm B) ctoderm C) ectoderm D) mesoderm -lining of vagina

The trophoblast secretes glycolipids to assist implantation within the endometrium.

The blood vessels of the umbilical cord are derived from which one of the following structures?

To penetrate the zona pellucida of the ovum, the sperm