The Space in the Midline of the Chest, Between the Lungs

question 5

Multiple Choice

The space in the midline of the chest, between the lungs and behind the breastbone, contains the heart, the large blood vessels, and the thymus. The correct spelling for this space is:

• A) mediastinum.
• B) medialstenium.
• C) mediasternum.
• D) midstinum.

---

Definitions:

Frontal Lobes

The part of the brain located just behind the forehead that is involved in complex cognitive functions, emotional regulation, and voluntary movement.

Pineal Gland

A small endocrine gland in the brain responsible for producing melatonin, a hormone that regulates sleep-wake cycles.

Environmental Changes

Modifications to the surroundings or habitat, often caused by human activities or natural phenomena, which can impact ecosystems and living conditions.

Recorded Messages

Pre-made audio or video content that has been captured and stored for later replay or distribution.