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Test Your Knowledge: Plural for Pneumothorax & Medical Terms

Think you can ace medical terminology plurals? Dive in and tackle the plural form for larynx, bronchus, and more!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration for medical terminology quiz on teal background

Use this quiz to practice the plural for pneumothorax and other tricky medical terms. You'll pick the right plurals for words like larynx and bronchus, get instant feedback, and see where you need more study before a test. For a quick review, check plurals basics and the respiratory terms guide .

What is the correct plural form of "pneumothorax"?
Pneumothoraxes
Pneumothorax
Pneumothoraces
Pneumothoraci
The term "pneumothorax" is of Greek origin where the suffix "-ax" becomes "-aces" in the plural (pneumothoraces). This follows the pattern seen in other Greek-derived medical terms. Common incorrect forms like "pneumothoraxes" apply English pluralization rules. For more details, see .
What is the plural form of "alveolus"?
Alveoli
Alveolae
Alveoluses
Alveola
"Alveolus" is a Latin diminutive meaning "small cavity." In Latin, the plural of "-us" becomes "-i," so "alveoli" is correct. The form "alveolae" is a mistaken attempt to apply a different Latin pattern. See for more.
What is the plural of "bronchus"?
Bronchia
Bronchi
Bronchii
Bronchuses
"Bronchus" follows the Latin second-declension pattern where "-us" becomes "-i" in the plural, yielding "bronchi." The form "bronchuses" uses English rules and is considered nonstandard in medical terminology. For more, see .
What is the correct plural of "atrium"?
Atria
Atriums
Atriis
Atrea
In Latin, the neuter noun "atrium" takes the plural ending "-a," forming "atria." The English plural "atriums" is sometimes seen but not preferred in medical contexts. See .
How should you pluralize "ovum"?
Ovi
Ovums
Ova
Ovus
"Ovum" is Latin for egg, and the standard Latin plural is "ova." While "ovums" appears in some texts, "ova" is the preferred medical term. More information at .
What is the plural of "bacterium"?
Bacteri
Bacteriums
Bacteria
Bacteriae
"Bacterium" is a singular Latin noun with the standard plural "bacteria." The English form "bacteriums" is nonstandard. For details, see .
What is the plural form of "vertebra"?
Vertebrae
Vertebra
Vertebras
Vertebraei
"Vertebra" is Latin for spinal bone, taking the plural ending "-ae" to become "vertebrae." The form "vertebras" is used informally in English but is less precise. See for more.
Which is the correct plural of "appendix" in medical terminology?
Appendicia
Appendixes
Appendixi
Appendices
The Latin plural of "appendix" is "appendices." While "appendixes" appears in nontechnical contexts, medical literature prefers "appendices." See .
What is the plural of "calculus" in a medical context?
Calculuses
Calculi
Calculase
Calci
"Calculus" is Latin for a small stone or concretion; in medicine, kidney or gallstones are called calculi in the plural. The form "calculuses" uses English rules but is less precise. For details see .
Which is the accepted plural of "diaphragm"?
Diaphragmata
Diaphragmata
Diaphragms
Diaphragas
Although Greek plurals like "diaphragmata" exist, the preferred English medical plural is "diaphragms." This aligns with modern usage in anatomy texts. See .
What is the plural of "stigma" when referring to a scar or mark?
Stigmata
Stigmii
Stigmae
Stigmas
"Stigma" is Greek in origin, and its classical plural is "stigmata." While "stigmas" appears in English, medical contexts often favor the original form. See .
How do you pluralize "prognosis"?
Prognoses
Prognosi
Prognosii
Prognosises
The term "prognosis" ends in "-is," a Greek singular ending. Its plural becomes "prognoses" with "-es." Other forms like "prognosises" are incorrect in medical writing. For more, refer to .
What is the plural of "iris" in anatomical terminology?
Iridi
Irises
Irides
Irisae
In anatomy, the Latin plural of "iris" (the colored part of the eye) is "irides." Common English usage may say "irises," but medical texts use "irides." See .
Which is the correct plural of "cortex"?
Corticis
Cortices
Cortixi
Cortexes
The Latin noun "cortex" (bark or outer layer) takes the plural ending "-ices," giving "cortices." The form "cortexes" is nonstandard in scientific contexts. See .
How should you pluralize "ovary"?
Ovari
Ovarys
Ovarays
Ovaries
"Ovary" follows English rules for nouns ending in "-y" after a consonant: the "y" becomes "i" and add "-es," forming "ovaries." See .
What is the classical plural of "sarcoma"?
Sarcomas
Sarcomae
Sarcomata
Sarcomi
"Sarcoma" is a Greek-derived term, and its classical plural is "sarcomata." While "sarcomas" is commonly used in general English, pathology literature may use "sarcomata." For reference see .
What is the plural of "thrombus"?
Thrombuses
Thrombi
Thrombii
Thrombii
"Thrombus" is Latin for a blood clot, and the plural is formed with "-i," giving "thrombi." The form "thrombuses" follows English rules but is less precise in medical writing. See .
What is the correct plural of "embolus"?
Emboluses
Embolii
Emboli
Emboli
"Embolus" refers to an object that lodges in a blood vessel; the proper Latin plural is "emboli." "Emboluses" uses English conventions and is less common in technical literature. For more, see .
How do you pluralize "papilla"?
Papillas
Papillii
Papillæ
Papillae
"Papilla" is Latin for a small nipple or projection; its plural is "papillae." The English form "papillas" is less precise. For details, consult .
What is the plural form of "phalanx"?
Phalanxes
Phalanx
Phalanges
Phalani
"Phalanx" refers to a bone in a finger or toe. Its plural is "phalanges," following Greek patterns where "-nx" becomes "-nges." See .
Which is the correct plural of "meninx"?
Meningii
Meninges
Meninxes
Meninces
"Meninx" is Greek for the membranes surrounding the brain and spinal cord; its plural is "meninges." The form "meninxes" applies English rules and is incorrect in anatomy. For more, see .
What is the plural of "bacillus"?
Bacilli
Bacilii
Bacilli
Bacilluses
The Latin noun "bacillus" takes the plural "bacilli." While "bacilluses" follows English plural rules, it is not used in formal microbiology. See .
How should you pluralize "viscus"?
Visci
Viscuses
Viscerae
Viscera
"Viscus" refers to an internal organ; its Latin plural is "viscera." English forms like "viscuses" are nonstandard in anatomy. For more information, see .
What is the classical plural of "placenta" in obstetrical contexts?
Placentas
Placenti
Placanatae
Placentae
The Latin noun "placenta" (meaning cake, referring to the organ) takes the plural "placentae." While "placentas" is common in everyday English, obstetrics texts may use "placentae." See .
What is the correct plural of "ischium"?
Ischiae
Ischii
Ischiums
Ischia
"Ischium" is Greek for a part of the pelvis, and its plural is "ischia," following the pattern of Greek neuter nouns that take "-a." The form "ischiums" is an English regular plural but not used in formal anatomy. See .
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Study Outcomes

  1. Understand Medical Terminology Plurals -

    Identify common Latin and Greek noun endings and how they determine medical term plurals.

  2. Recall the Plural for Pneumothorax -

    Learn and memorize that the plural for pneumothorax is pneumothoraces to boost your vocabulary accuracy.

  3. Apply Plural Rules to Larynx and Bronchus -

    Practice forming the plural form for larynx and the plural form of bronchus by applying morphological patterns.

  4. Differentiate Regular and Irregular Plurals -

    Analyze exceptions in medical terminology plurals and distinguish irregular forms from standard rules.

  5. Enhance Documentation Accuracy -

    Self-assess your understanding through quiz feedback to improve precision in using plural medical terms.

Cheat Sheet

  1. Latin and Greek Suffix Rules -

    Medical terminology plurals often follow Latin and Greek rules, where endings like - us change to - i and - on change to - a, as outlined by Harvard Medical School resources. Use the mnemonic "Sue Is Old On All Aboard" to recall that - us→ - i and - um→ - a helps in decoding many terms. Mastering these patterns provides a solid foundation for tackling irregular plurals.

  2. Plural for Pneumothorax -

    The plural for pneumothorax is pneumothoraces, following the - ax to - aces rule detailed by the University of Washington School of Medicine. A handy trick is to think "one thorax, many thoraces" to cement the shift from - ax to - aces. This ensures you confidently use the correct form in clinical write-ups and exams.

  3. Plural Form for Larynx -

    According to Johns Hopkins Medicine, the plural form for larynx is larynges, reflecting the - nx to - nges change common in Greek-derived terms. Remember the rhyme "larynx sings in larynges" to link voice box singular to plural. This mnemonic boosts recall during rapid-fire quizzes.

  4. The Plural Form of Bronchus -

    The plural form of bronchus is bronchi, as noted by the Mayo Clinic's medical dictionary, following the typical - us→ - i conversion. Picture a tree branching into two bronchi to visualize the singular bronchus splitting into bronchi. Using imagery strengthens retention of these irregular endings.

  5. Common Irregular Medical Plurals -

    Beyond pneumothorax and bronchus, terms like fungus→fungi and diagnosis→diagnoses often trip learners, so consult sources like the National Library of Medicine for verification. Create flashcards grouping - is→ - es and - ex→ - ices to practice patterns systematically. Regular review of these lists builds automaticity under exam stress.

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