Exam 21: Development and Aging

When a sperm cell enters a secondary oocyte, what event in the oocyte is immediately triggered?

Pregnancy occurs when the morula stage implants in the uterus.

Which one of the following statements about gender determination is TRUE?

The first four days of human embryonic development occur in the

Maturation of the reproductive organs and the reproductive response is called

The duration of a person's life is referred to as

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

Research on the aging process shows that wounds of the elderly heal more slowly and that they are more susceptible to disease. These are problems associated with an aging ________ system.

Labor is a highly coordinated event that requires the participation of numerous signaling molecules. Discuss how hormones help coordinate the events of labor to ensure that a child is delivered quickly.

A zygote forms when

Ejection of milk from the breasts is caused by the hormone ________.

The muscles and nervous system of the fetus become mature enough for movement to occur by the ________ month of development.

Following fertilization, if a ball of embryonic cells splits into two masses before differentiation has begun, ________ twins result.

During the first day or so after birth, the breasts produce a watery milk called

-The figure above shows a human sperm. Which part of the sperm contains the most mitochondria for generating ATP?

During embryonic development, the second cavity that forms in the blastocyst becomes filled with amniotic fluid.

Fertilization is generally considered complete when the

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