brain stem
Definition
- Noun:
- The part of the brain continuous with the spinal cord: The brain stem is the lower, stalk-like portion of the brain that connects the cerebrum and cerebellum to the spinal cord. It is responsible for many vital involuntary functions.
Usage
The term "brain stem" is used in medical, biological, and anatomical contexts to refer to a specific, critical region of the brain. It is typically used as a singular noun.
Examples
- Noun:
- The brain stem controls essential life functions like breathing and heart rate.
- Damage to the brain stem can have severe consequences.
- The surgeon carefully avoided the patient's brain stem during the procedure.
Advanced Usage
- "Brain stem death": A clinical and legal definition of death based on the irreversible loss of all brain stem functions.
- After the accident, the patient was declared dead based on brain stem death criteria.
Variants and Related Words
- Brainstem: A common alternative spelling, written as one word.
- The brainstem is a conduit for motor and sensory pathways.
Synonyms
- Brainstem: The exact synonym, differing only in spelling.
- Truncus encephali: The Latin anatomical term.
Different Meanings
The term "brain stem" has a single, specific anatomical meaning. It does not have common idiomatic or figurative uses outside of technical descriptions.
Noun
-
the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus
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