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The esophagus contains both smooth and skeletal muscle fibers?
The esophagus has two types of muscles. The upper third of the esophagus is composed of striated muscles, while the lower third contain smooth muscles. The muscles in the middle are a mixture of both striated and smooth.
The iris is composed primarily of two smooth muscle layers?
the radial fibers contract,enlarging the pupil and allowing more light to enter the eye
The iris of the eye has two fibers what are they?
Circular and Radius set of muscle fibers
Muscle sphincters are composed of what two types of muscle fibers?
Smooth Muscle Fiber
Two main muscle fibers?
Muscle fibers can be smooth or striated. Smooth muscle is often involuntary and line the blood vessels and gastrointestinal tract. Striated muscles may be voluntary, such as skeletal muscle, or involuntary such as cardiac muscle.
What is the role of slow muscle fibers and fast muscle fibers in the response of a muscle to different types of exercise?
There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.
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 is the innermost part of the muscle?
There are two types of muscle in the body. The Cardiac Muscle and the Skeletal Muscle. The skeletal muscle is made up of intrafusal and extrafusal fibers. The Muscle Belly is made up entirely of extrafusal fibers (even in the deepest parts). The intrafusal fibers are located throughout the muscle. The cardiac muscle is distinct from skeletal muscle, one of the main differences is the amount of mitochondria it has is increased, and so technically at the deepest part of cardiac muscle is mitochondria (but there are other components as well).
What are the fibers that muscles are made of called?
Muscle fibers, or muscle cells, are made up of two kinds of fibers, or myofilaments. The thin ones are called actin, and the thick ones are called myosin.
What is a layer of the heart largely composed of cardiac muscle tissue?
This word can be broken down into two parts that will reveal the answer to your question. Myo is the medical term for muscle and cardio is the medical term for heart. Therefore, your answer would be the muscle that is the heart.
What statement would you use to correctly describe the muscular system of a flatworm?
It is made up of two layers of muscle.It is made up of two layers of muscle.
Where is the highest concentration of vaginal musculature?
That would be the myometrium, which is located in the second layer of the vagina. It goes between the other two layers known as the perimetrium and the endometrium. The myometrium is made of longitudinal and circular muscle fibers that interweave like the fibers of a basket. This enables the uterus to stretch during pregnancy and contract during labor and orgasm.
