Which Structure Surrounds and Protects the Brain in All Vertebrates

question 93

Multiple Choice

Which structure surrounds and protects the brain in all vertebrates?

• A) pharynx
• B) neural crest
• C) oral hood
• D) notochord
• E) cranium

---

Definitions:

Methadone

A synthetic opioid used medically both for pain management and as a treatment for narcotic addiction, especially heroin.

Toxemia

A medical condition in pregnant women characterized by high blood pressure, swelling, and protein in the urine, also known as pre-eclampsia.

Thalidomide

A drug originally marketed in the 1950s as a sedative, but later found to cause birth defects when taken by pregnant women, leading to strict controls on its use.

Kaposi's Sarcoma

A type of cancer that forms in the lining of blood and lymph vessels, often associated with weakened immune systems, like in AIDS.