voluntary muscle
Definition
Noun: A voluntary muscle is a type of striated muscle tissue that is under conscious, intentional control. It is primarily attached to the skeleton and enables movement of the body and limbs.
Usage
The term is used in biological, anatomical, and medical contexts to describe muscles whose contraction is consciously directed by the brain via the somatic nervous system. It contrasts with involuntary muscles (like cardiac or smooth muscle).
Examples
- Noun:
- Biceps and quadriceps are examples of voluntary muscles.
- Walking requires the coordinated action of many voluntary muscles.
Advanced Usage
- Physiological Context: Often discussed in relation to motor control, physical therapy, and exercise science.
- The study focused on how fatigue affects the performance of voluntary muscle.
Variants and Related Words
- Skeletal Muscle: A near-synonym, as nearly all voluntary muscles are skeletal muscles. However, some skeletal muscles can have involuntary reflex actions.
- Striated Muscle: A broader category that includes both voluntary skeletal muscles and the involuntary cardiac muscle.
Synonyms
- Skeletal Muscle (in most contexts)
Antonyms
- Involuntary Muscle: Muscle tissue that contracts without conscious control, such as smooth muscle in the digestive tract or cardiac muscle in the heart.
Noun
-
striated muscle that can be controlled voluntarily
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