Ad
related to: flexion vs extension of neck muscles definitionamazon.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
When the chin is against the chest, the neck is flexed, and the trunk is flexed when a person leans forward. [10] Flexion of the shoulder or hip is movement of the arm or leg forward. [11] Extension is the opposite of flexion, a straightening movement that increases the angle between body parts. [12] For example, when standing up, the knees are ...
Flexion and extension describe the basic ways your body moves at its joints. Here's what that means for your workouts and training.
In anatomy, extension is a movement of a joint that increases the angle between two bones or body surfaces at a joint. Extension usually results in straightening of the bones or body surfaces involved. For example, extension is produced by extending the flexed (bent) elbow. Straightening of the arm would require extension at the elbow joint.
Movements of the neck includes: flexion, extension, (nodding yes), and rotation (shaking head no). The mouth has evolved to support chewing, (mastication) and swallowing (deglutition), and speech (phonation). In addition to the teeth, other structures that aid chewing are the lips, cheeks, tongue, hard palate, soft palate, and floor of the mouth.
Torticollis is a fixed or dynamic tilt, rotation, with flexion or extension of the head and/or neck. The type of torticollis can be described depending on the positions of the head and neck. [1] [3] [4] laterocollis: the head is tipped toward the shoulder; rotational torticollis: the head rotates along the longitudinal axis towards the shoulder [5]
Laterocollis is the tilting of the head from side to side. This is the "ear-to-shoulder" version. This involves many more muscles: ipsilateral sternocleidomastoid, ipsilateral splenius, ipsilateral scalene complex, ipsilateral levator scapulae, and ipsilateral posterior paravertebrals. The flexion of the neck (head tilts forwards) is anterocollis.
In anatomy, flexor is a muscle that contracts to perform flexion (from the Latin verb flectere, to bend), [1] a movement that decreases the angle between the bones converging at a joint. For example, one's elbow joint flexes when one brings their hand closer to the shoulder , thus decreasing the angle between the upper arm and the forearm .
A muscle that fixes or holds a bone so that the agonist can carry out the intended movement is said to have a neutralizing action. A good famous example of this are the hamstrings; the semitendinosus and semimembranosus muscles perform knee flexion and knee internal rotation whereas the biceps femoris carries out knee flexion and knee external ...