Plurals

Question 1

For words ending in a, retain the a and add e

Answer 1

vertebra —- vertebrae
bursa —- bursae

Question 2

Words ending in -us
commonly form their plural by dropping -us and adding -i.

Answer 2

nucleus → nuclei
bronchus → bronchi
thrombus → thrombi

Question 3

Words ending in is, drop the is and add es

Answer 3

metastasis— metastases

Question 4

Drop the ex or ix and add ices for words ending in ex and ix.

Answer 4

apex apices
varix varices

Question 5

For words ending in on, drop the on and add an E

Answer 5

ganglion ganglia

Question 6

For words ending in us, drop the us and add i.

Answer 6

bronchus bronchi
calculus calculi
nucleus nuclei

Two exceptions to this rule are virusesand sinuses.