Rehabilitacja obejmuje terapię manualną.

Because it is the direct object of the verb obejmuje.

The verb obejmować takes the accusative case, so both the noun and the adjective have to change:

• terapia → terapię
• manualna → manualną

This is a very common pattern with feminine singular nouns ending in -a.

So:

• terapia manualna = nominative, the basic dictionary form
• terapię manualną = accusative, used here because it is what rehabilitation includes

Because rehabilitacja is the subject of the sentence, and subjects are normally in the nominative case.

In this sentence:

• Rehabilitacja = the thing doing the including
• obejmuje = includes
• terapię manualną = the thing being included

So rehabilitacja stays in its basic form.

Obejmuje is:

• 3rd person singular
• present tense
• from the verb obejmować

It agrees with rehabilitacja, which is a singular noun.

So the structure is like:

• rehabilitacja obejmuje = rehabilitation includes

This verb is imperfective, so it is good for general statements, descriptions, and repeated or ongoing situations.

That is a very natural order in Polish for many established terms, classifications, and formal expressions.

So terapia manualna is a standard medical term meaning manual therapy.

In Polish, adjectives often come before the noun, but they can also come after it. When they come after, it often sounds:

• more technical
• more official
• like a fixed category or recognized term

So terapia manualna is perfectly normal and idiomatic.

Yes. Polish word order is more flexible than English because case endings show what each word is doing.

The most neutral order here is:

• Rehabilitacja obejmuje terapię manualną.

But other orders are possible, for example for emphasis:

• Terapię manualną obejmuje rehabilitacja.
• Obejmuje rehabilitacja terapię manualną.

These are grammatically possible, but they sound marked or context-dependent. For a learner, the original sentence is the best standard version to use.

A rough pronunciation guide is:

re-ha-bee-lee-TA-tsya ob-eye-MOO-ye te-RA-pye ma-noo-AL-non

A few helpful notes:

• Polish stress usually falls on the second-to-last syllable:

  • re-ha-bi-li-TA-cja
  • obej-MU-je
  • te-RA-pię
  • ma-nu-AL-ną
• j in Polish sounds like English y in yes
• cj in -tacja sounds like tsy-a
• ę and ą are nasal vowels, but many learners first just aim for a close approximation rather than a perfect nasal sound

Often yes, but in real usage it can be a bit broader or more practical than the English word.

In medical contexts, rehabilitacja can refer to:

• rehabilitation in general
• rehab treatment
• physiotherapy/physical rehab services

So depending on context, it may sound closer to:

• rehabilitation
• rehab
• physical rehabilitation

No. Polish does not have articles.

So:

• Rehabilitacja can mean rehabilitation or the rehabilitation
• terapię manualną can mean manual therapy or the manual therapy

The exact meaning depends on context, not on an article.

The endings show it.

Here the forms are feminine singular accusative:

• terapię
• manualną

A plural form would look different, for example:

• terapie manualne in nominative/accusative plural for non-masculine-personal nouns

So in your sentence, it clearly means one type/category of manual therapy, not multiple therapies.

The dictionary forms are:

• rehabilitacja → already in dictionary form
• obejmować → the infinitive
• terapię → terapia
• manualną → manualny as the dictionary adjective form, though the feminine nominative form is manualna

So if you were looking these up, that is what you would search for.