Question

Which of the following explains correctly, the movement of muscles that bends a joint to a more acute angle?
A) Flexion
B) Insertion
C) Tonus
D) Diastole
E) Extension

Answer 1

It is a movement that occur in a sagittal plane. It refers to a movement that decreases the angle between two body parts. For example, it is a movement between the ulna and the humerus.

Complete step by step answer: There are six types of movements which the joints can exhibit. These are extension, flexion, abduction, addiction, circumduction and rotation. Hinge joints allow flexion and extension only.
A. Flexion: Flexion refers to the movement specific to bending of a joint so as to bring the involved bones closer. This moment is primarily seen in elbow and knee joints which is capable of bending within ranges of acute angles. This occurs when a joint angle is decreasing for example, when one does a bicep curl, the elbow flexes. The leg flexes as it prepares to kick a ball.
B. Insertion: Insertion refers to the point of attachment between bone and muscle.
C. Tonous: Tonous refers to the passive muscle tension or contractions which is primarily responsible for postures maintenance.
D. Diastole: Diastole refers to the long phase of the cardiac cycle during which the quick contraction of heart muscles is observed.
E. Extension: it refers basically to straightening of the limb or extending it. This movement is primarily seen in elbow and knee joints and is capable of bending within the range of acute angles.
Thus, the answer is option A.

Note: Myopathies are neuromuscular disorders that occur in the skeletal muscle due to dysfunction of muscle fibres. Symptoms of myopathy can include muscle cramps, stiffness and spasm.