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Do skeletal muscle fibers contain sarcomeres whereas smooth muscle fibers do not?
Yes, skeletal muscle fibers contain sarcomeres, which are the repeating units responsible for muscle contractions. In contrast, smooth muscle fibers do not have sarcomeres in the same organized structure but still have contractile proteins.
What muscle must be supplied by a somatic motor nerve?
All skeletal muscles in the body must be supplied by somatic motor nerves. These nerves carry signals from the brain to the muscles, controlling voluntary movements.
What tiny cubes contain smooth muscle that can contract and relax thereby affecting the flow of air into the alveoli?
You do not have any such cubes in your respiratory system.
Does sympathetic and parasympathetic nerves supply voluntary skeletal muscles?
No, sympathetic and parasympathetic nerves do not supply voluntary skeletal muscles. These nerves primarily innervate smooth muscle, cardiac muscle, and glands, helping to regulate involuntary functions in the body. Voluntary skeletal muscles are under the control of the somatic nervous system.
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.
What muscle is controlled by two nerves?
All of them....or do you mean the autonomic nervous system?
What nerves send signals to smooth muscle cardiac muscle and glands?
Autonomic
Which type of muscles contain spindle shaped cells?
Skeletal muscle tissue has cylindrical cells. Due to the cells in the skeletal muscle, the muscle can now allow movement to the bones in the body.
What effect does adrenaline have on gut smooth muscle?
It makes the muscle totally relax as it blocks the action potential in the nerves.
What muscle tissue type do not contain sarcomeres?
Smooth.
What happens when smooth muscles in blood vessels contract in the dermis?
When smooth muscle in the walls of dermal vessels contracts, the body conserves heat.
Autonomic nerves innervate what three things?
Smooth muscle Cardiac muscle Gland
How many nucleus does smooth muscle have?
smooth muscles and cardiac muscles contain a single, centrally located nuclei, where as skeletal muscle cells are very large and contain many nuclei.
Which of the following structures do not contain smooth muscle A brain B heart C arm muscles D leg muscles E intestines?
These structures do not contain smooth muscle A brain - The brain does not contain muscles!C arm musclesD leg musclesThese DO contain smooth muscle:B heartE intestines
How is cardiac muscle similar to stomach smooth muscle?
Cardiac muscle is similar to smooth muscle in that both are involuntary. Cardiac muscle is similar to skeletal muscle because they are both striated.
Do skeletal muscle fibers contain sarcomeres whereas smooth muscle fibers do not?
Yes, skeletal muscle fibers contain sarcomeres, which are the repeating units responsible for muscle contractions. In contrast, smooth muscle fibers do not have sarcomeres in the same organized structure but still have contractile proteins.
What muscle internal organs contain?
the muscles are smooth muscles!
