Table of Contents
- 1 Which muscle is arranged into fascicles?
- 2 Have fibers arranged concentrically around an opening or recess?
- 3 How are muscles arranged?
- 4 Which muscle has a convergent pattern of fascicles quizlet?
- 5 How are fascicle arrangements related to the function of muscles?
- 6 When do fascicles come to a common attachment point?
Which muscle is arranged into fascicles?
One is the arrangement of the fascicles in the skeletal muscle. Fascicles can be parallel, circular, convergent, pennate, fusiform, or triangular.
What are the muscles that are found at openings?
A&P I Chapter 10
|What are the muscles that are found at openings of the body collectively called?
|the frontal belly of the epicranius
|Which of the following muscles is involved in producing horizontal wrinkles in the forehead?
Have fibers arranged concentrically around an opening or recess?
The muscle fibers in a circular muscle are concentrically arranged around an opening or recess. A circular muscle is also called a sphincter, because contraction of the muscle closes off the opening. A convergent muscle has widespread muscle fibers that converge on a common attachment site.
How are the fascicles arranged in convergent muscle?
Covering a broad surface these fibers allow for more versatile types of movement. Because the fascicles pull on the tendons at an angle, they do not move the tendon as far as their parallel muscle counterparts.
How are muscles arranged?
Muscles are arranged in pairs based on their functions. For muscles attached to the bones of the skeleton, the connection determines the force, speed, and range of movement. These characteristics depend on each other and can explain the general organization of the muscular and skeletal systems.
What are the circular muscles?
We do this consistent with measured local shortening of longitudinal muscle and measured coordination with circular muscle contraction.
Which muscle has a convergent pattern of fascicles quizlet?
Triangular muscles, such as the pectorals major in the chest, usually have a convergent fascicle arrangement. A convergent muscle is a broad muscle that uniformly tapers to a ________ tendon. Triangular muscles, such as the pectorals major in the chest, usually have a convergent fascicle arrangement.
What is the muscle arrangement in which the fascicles have a broad origin and narrow to a single tendon attachment?
Shapes of Skeletal Muscles A convergent pattern is found in triangular-shaped muscles, in which fascicles attach along a broad tendon at one end of the muscle and converge to a narrow tendon at the other. Fascicles in a pennate pattern are attached like plumes of a feather to an elongate tendon.
Fascicle arrangements determine what type of movement a muscle can make. For instance, circular muscles act as sphincters, closing orifices. Muscles work in pairs to facilitate movement of the bones around the joints. Agonists are the prime movers while antagonists oppose or resist the movements of the agonists.
How are fascicles related to the range of motion?
When a group of muscle fibers is “bundled” as a unit within the whole muscle it is called a fascicle. Fascicles are covered by a layer of connective tissue called perimysium (see Figure 10.3). Fascicle arrangement is correlated to the force generated by a muscle and affects the muscle’s range of motion.
When do fascicles come to a common attachment point?
When a muscle has a widespread expansion over a sizable area and the fascicles come to a single, common attachment point, the muscle is called convergent. The attachment point for a convergent muscle could be a tendon, an aponeurosis (a flat, broad tendon), or a raphe (a very slender tendon).
How are circular muscles used to close orifices?
For instance, circular muscles act as sphincters, closing orifices. Muscles work in pairs to facilitate movement of the bones around the joints. Agonists are the prime movers while antagonists oppose or resist the movements of the agonists.