The Discovery of Eris

question 129

Multiple Choice

The discovery of Eris .

• A)was not surprising, because other Kuiper belt objects approaching the size of Pluto had already been discovered
• B)was not surprising, because the existence of a massive "Planet X" had been predicted nearly a century ago
• C)was surprising, due to its "backwards" orbit around the Sun
• D)was surprising, since we thought we knew about all large objects in the solar system

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Definitions:

Lamellae

Thin layers or plates found in bones, structured to provide strength and stability.

Lacunae

Small cavities in bone or cartilage tissue housing osteocytes or chondrocytes, cells essential for bone maintenance and cartilage elasticity.

Canaliculi

Microscopic canals in bones that allow for the exchange of nutrients and wastes between blood vessels and osteocytes.

Periosteum

A dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints, crucial for bone growth and healing.