Which term describes a star-shaped cell in the nervous system?

• A. Astrocyte
• B. Arthrography
• C. Arthroscope
• D. Atherosclerosis

Answer: (A)

Star-shaped cells in the nervous system are called astrocytes. They’re a type of glial cell with many processes that give them their characteristic star-like appearance. Astrocytes support neurons in several essential ways: they help maintain the chemical balance around neurons, regulate neurotransmitter levels, contribute to the blood-brain barrier, provide structural support, and participate in repair after injury. The other terms refer to different body systems or processes—arthrography is a joint-imaging procedure, an arthroscope is a tool used during joint surgery, and atherosclerosis is the buildup of plaque in arteries.