How Do Hormones Regulate the Pattern of Bone Growth

question 103

Multiple Choice

How do hormones regulate the pattern of bone growth?

• A) They don't; hormones are not involved in bone growth processes.
• B) They change the rates of osteoblast and osteoclast activity.
• C) They control the rate of movement of the epiphyseal line.
• D) They ensure that intramembranous ossification occurs throughout life.
• E) None of the answers are correct.

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Definitions:

Abscisic Acid

A plant hormone that regulates growth and development, and mediates stress responses such as drought tolerance.

Gibberellin

Plant hormone promoting increased stem growth; also involved in flowering and seed germination.

Phytochrome

Photoreversible plant pigment that is involved in photoperiodism and other responses of plants, such as etiolation.

Cytokinins

Plant hormones that promote cell division and growth, delay the aging of leaves, and in conjunction with other hormones, regulate plant development.