Which Two Cavities Are Continuous with Each Other

question 27

Multiple Choice

Which two cavities are continuous with each other?

• A) pericardial and pleural
• B) cranial and spinal
• C) the two pleural cavities
• D) thoracic and abdominopelvic

---

Definitions:

Nitrogenous Bases

Organic molecules that make up the building blocks of nucleic acids, DNA and RNA, including adenine, guanine, cytosine, thymine (in DNA), and uracil (in RNA).

Beta Pleated Sheets

A structural motif in proteins characterized by zigzag folding of the peptide chain, contributing to the protein's overall stability.

Alpha Helices

A common structural motif in proteins where the polypeptide chain forms a coiled structure stabilized by hydrogen bonds between backbone atoms.

Protein Structure

The three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins have a complex structure, including primary, secondary, tertiary, and quaternary formations, that determines their function in biological systems.