muscles of head pl.n.
The muscles of facial expression, mastication, and the suboccipital muscles considered as a group.
- Muscle spasm
muscle spasm n. Persistent increased tension and shortness in a muscle or group of muscles that cannot be released voluntarily.
noun 1. Cell Biology. a proprioceptor in skeletal muscle, composed of striated muscle fibers and sensory nerve endings in a connective tissue sheath, that conveys information via the spinal nerves on the state of muscle stretch, important in the reflex mechanism that maintains body posture. muscle spindle n. A stretch receptor found in vertebrate muscle.
[muhs-kohn] /ˈmʌs koʊn/ noun, Chemistry. 1. an oily, very slightly water-soluble, large cyclic ketone containing a 15-membered ring, C 1 6 H 3 0 O, obtained from musk: used in the perfume industry.
[muhs-kuh-vey-doh, -vah-] /ˌmʌs kəˈveɪ doʊ, -ˈvɑ-/ noun 1. raw or unrefined sugar, obtained from the juice of the sugar cane by evaporating and draining off the molasses. /ˌmʌskəˈvɑːdəʊ/ noun 1. raw sugar obtained from the juice of sugar cane by evaporating the molasses