When a Chemical Signal from a Group of Embryonic Cells

question 46

Multiple Choice

When a chemical signal from a group of embryonic cells causes a different, nearby group of cells to embark on a particular developmental course (say, differentiating into a leg) , the interaction between the two groups of cells is called

• A) induction.
• B) coordinated differentiation.
• C) implantation.

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Definitions:

Osteon

The fundamental functional unit of compact bone, consisting of a central canal surrounded by concentric rings of bone matrix and cells.

Tuberosity

A large rounded projection on a bone that typically serves as an attachment site for muscles or ligaments.

Trochanter

A bony prominence on the femur near its joint with the hip bone, serving as a site for muscle attachment.

Hyaluronic Acid

A substance naturally present in the human body, notable for its hydrating properties and ability to retain water in skin tissues.