Question

multiple choice question
a bony or cartilage - rich ______ surrounds and protects the brain in most chordates.
o sternum
o gill
o cranium
o scapula

Explanation:

• The sternum is a flat bone in the center of the chest and does not protect the brain.
• Gills are respiratory organs in aquatic animals and have no relation to protecting the brain.
• The cranium is the part of the skull that encloses and protects the brain.
• The scapula is the shoulder blade and is not involved in protecting the brain.

Answer:

cranium