Author: Reviewer: 2.8: Lab Exercise 10- Major Muscles of the Body When a parallel muscle has a central, large belly that is spindle-shaped, meaning it tapers as it extends to its origin and insertion, it sometimes is called fusiform. 1. Edinburgh: Churchill Livingstone. These terms arereversed for the opposite action, flexion of the leg at the knee. There are some sections within other muscles that can also assist with flexion of the hip joint, for example, the anterior fibers of gluteus minimus and gluteus medius can assist with flexion of the hip joint, depending on the position of the hip when its being flexed. 29 terms. A muscle that crosses the medial side of a joint results in adduction, which results in the upper or lower extremity moving toward the midline of the body. Likewise, our body has a system for maintaining the right amount of tension at a joint by balancing the work of a muscle agonist with its antagonist. Anatomical Attachments: Origin: Attaches to the lateral supracondylar ridge at the distal end of the humerus. I would honestly say that Kenhub cut my study time in half. For example, the coracobrachialis muscle is a fixator for biceps brachii. 11.1 Interactions of Skeletal Muscles, Their Fascicle - BCcampus The end of the muscle attached to a fixed (stabilized) bone is called the origin and the moveable end of the muscle that attaches to the bone being pulled is called the muscles insertion. It slides over the lateral surface of the elbow joint, entering the anterolateral cubital area. During forearm flexion, for examplelifting a cup, a muscle called the biceps brachii is the prime mover. The Cardiovascular System: The Heart, Chapter 20. Brachioradialis: Origin, insertion, innervation, action | Kenhub
