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Hypertonicity Often Occurs Synergistically

a) Elbow ___ion
b) Forearm ___ion
c) Humerus _____ed, _____ rotated
d) Finger ____ion and ___ ion

1 Answer

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Final answer:

The student's question concerns the physical movements corresponding to different states of hypertonicity in the limbs and fingers. The correct terms include flexion, pronation, adduction, and medial rotation. Additionally, the origin of the wrist flexors is at the medial epicondyle of the humerus.

Step-by-step explanation:

The question pertains to the muscular actions involved in different movements of the human body, commonly studied within the fields of anatomy and physiology.

When referring to hypertonicity and its synergy with other movements, the missing terms can be filled as follows: a) Elbow flexion b) Forearm pronation c) Humerus adducted, medially rotated d) Finger flexion and adduction.

Figure 12.11 highlights the role of the biceps muscle in the flexion and supination of the forearm around the elbow with tension TM. Using these movements in a synergistic fashion can result in hypertonicity, a condition of excessive muscle tone. The origin of the wrist flexors is at the medial epicondyle of the humerus, as indicated by the multiple-choice question provided.

It is also important to understand the different joints and possible injuries, such as the distal humerus fracture in children, which can occur from an impact to the elbow, resulting in complications like ischemia that may cause damage to the forearm muscles. Knowledge of these anatomical structures and their functions is crucial for healthcare professionals and those studying related disciplines.

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