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Protraction and retraction is an anterior (protraction) or posterior (retraction) movement, [44] such as of the arm at the shoulders, although these terms have been criticised as non-specific. [45] Reciprocal motion is alternating motions in opposing directions. [46] Reposition is restoring an object to its natural condition. [47]
The major muscles involved in retraction include the rhomboid major muscle, rhomboid minor muscle and trapezius muscle, [2] [3] whereas the major muscles involved in protraction include the serratus anterior and pectoralis minor muscles. [4] [5]
Human physiology. Retracted (phonetics), a sound pronounced to the back of the vocal tract, ... Retraction (kinesiology), an anatomical term of motion;
As a result, protraction and retraction forces are transmitted primarily to the symphysis via the lateral and ventral bars. During protraction, the entire upper jaw is raised and the tip of the jaw is bent up. Additionally, in retraction, the tip bends down with respect to the rest of the upper jaw. [15] Rhynchokinesis (see below)
Human anatomy, physiology, and biochemistry are basic medical sciences, which are generally taught to medical students in their first year at medical school. Human anatomy can be taught regionally or systemically; [ 1 ] that is, respectively, studying anatomy by bodily regions such as the head and chest, or studying by specific systems, such as ...
Their main functions are altering the tongue's position allowing for protrusion, retraction, and side-to-side movement. [6] The genioglossus arises from the mandible and protrudes the tongue. It is also known as the tongue's "safety muscle" since it is the only muscle that propels the tongue forward.
This is a list of human anatomy mnemonics, categorized and alphabetized.For mnemonics in other medical specialties, see this list of medical mnemonics.Mnemonics serve as a systematic method for remembrance of functionally or systemically related items within regions of larger fields of study, such as those found in the study of specific areas of human anatomy, such as the bones in the hand ...
The articulating surfaces of synarthroses have little or no mobility, and are strongly united to each other. For example, most of the joints of the skull are held together by fibrous connective tissue and do not allow for movement between the adjacent bones.