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What kind of muscle is thick in the middle and tapered at each end?
fusiform
Is the adductor longus parallel or pennate?
parallel
How are muscle fibers arranged to form a muscle?
Muscle fibers can be arranged into two basic structural patterns, fusiform and pinnate. Most human muscles are fusiform, with the fibers largely arranged parallel along the muscle's longitudinal axis. In many of the larger muscles the fibers are inserted obliquely into the tendon, and this arrangement resembles a feather. The fibers in a pinnate (feather) muscle are shorter than those of a fusiform muscle. The arrangement of pinnate muscle fibers can be single or double, as in muscles of the forearm, or multipinnate, as in the gluteus maximus or deltoid.
What are examples of Fusiform fish?
Fusiform fish are characterized by their streamlined, torpedo-shaped bodies, which help them swim efficiently in water. Examples include tuna, mackerel, and swordfish, all of which are known for their speed and agility. Other examples are the barracuda and the marlin, which also exhibit this fusiform body shape, aiding in their predatory lifestyles. These adaptations make them well-suited for life in open waters.
Is the deltoid fusiform or intrinsic?
The deltoid muscle is considered an intrinsic muscle of the shoulder. It is not fusiform; instead, it has a multipennate structure, which means its fibers are oriented at multiple angles to the tendons, allowing for a greater range of motion and strength. The deltoid plays a crucial role in shoulder abduction, flexion, and extension.
What is fusiform?
Fusiform refers to a shape that is tapered at both ends and wider in the middle, resembling a spindle or an elongated oval. This term is often used in biology to describe certain types of cells or structures, such as fusiform muscle fibers, which are designed for efficient contraction. In botany, fusiform can describe the shape of certain fruits or seeds. The term can also apply in various contexts, including anatomy and design, to indicate a streamlined form.
Are muscles are bundles of muscle fibers d together by connective tissue?
muscles are made up of cells
Why are multipennate muscles more likely to generate muscle contraction forces than fusiform muscles?
Multipennate muscles have a greater number of muscle fibers packed into a given volume compared to fusiform muscles, allowing for a larger cross-sectional area. This increased density of fibers enables multipennate muscles to produce more force during contraction. Additionally, the arrangement of fibers in a multipennate structure allows for more effective force transmission to the tendon, enhancing overall muscle strength. In contrast, fusiform muscles, while capable of producing faster contractions, have less overall force-generating potential due to their longer, more parallel fiber arrangement.
What are examples of muscular system?
Some examples are smooth muscle and cardiac muscle.
What is the body shape of squirrelfish?
fusiform
Describe the differences between a fusiform and pennate muscle?
In non pennate or fusiform structure, fibers run in line with the line of pull. There is a longer fiber length associated with a fusiform structure, but often not a very thick cross-section -Weaker overall, but greater ROM (range of movement) making it good for speed In a pennate or penniform muscle structure, there is an oblique fiber pattern. Fibers do not pull in the same direction as the line of muscle pull. There is a shorter fiber length but usually a thicker cross sectional area. -There are three pennate types 1) Unipennate: One-sided feather such as in the semimembranous 2) Bipennate: Two-sided feather such as in the gastrocnemius 3) Multipennate: many-headed two sided feather such as in the deltoids -Good for strength, smaller ROM, meaning it is not as great for speed
What shape is a white shark?
Sharks are typically "fusiform".
