Rules for forming plurals of medical terms

Question 1

Singular:
x

Answer 1

Plural:
c or g, and add es

Example:
- apex => apices
- thorax => thoraces
- meninx => meninges
- appendix => appendices
- phalanx => phalanges

Question 2

Singular:
is

Answer 2

Plural:
es

Example:
- diagnosis => diagnoses
- prognosis => prognoses

Question 3

Singular:
oma

Answer 3

Plural:
omata

Example:
- stoma => stomata
-sarcoma => sarcomata
- carcinoma => carcinomata (but carcinomas is also acceptable)

Question 4

Singular:
a

Answer 4

Plural:
ae

Example:
- sequela => sequelae
- vertebra => vertebrae
- pleura => pleurae

Question 5

Singular:
um

Answer 5

Plural:
a

Example:
- ovum => ova
- bacterium => bacteria
- diverticulum => diverticula

Question 6

Singular:
us

Answer 6

Plural:
i

Example:
- fungus => fungi
- streptococcus => streptococci
- thrombus => thrombi
- bronchus => bronchi

Question 7

Singular:
on

Answer 7

Plural:
a

Example: ganglion => ganglia

Question 8

Singular:
en

Answer 8

Plural:
ina

Example : lumen => lumina