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Which type of muscle can contract without being stimulated by the nervous system?
cardiac muscle tissue
Before a muscle cell can be stimulated to contract again what must occur?
Repolarization
When a muscle is stimulated do all motor units fire why or why not?
When a muscle is stimulated not all motor units in the nerve are fired. More muscle fibers are stimulated, however and smaller nerves are stimulated before larger ones.
What kind of muscle makes your heart?
You call it as cardiac muscles. The muscle fibers contract rhythmically. The muscle fibers are attached to each other end to end. This facilitates the conduction of the impulse. The muscle fiber can be stimulated to give you contraction of the the same.
What is the function of the muscle fibers?
Muscle fibers contract to generate force and produce movement in the body. They are responsible for actions such as lifting objects, running, and even maintaining posture. Additionally, muscle fibers play a vital role in regulating body temperature and supporting various bodily functions.
The ability of a muscle to contract and relax is dependent on the flow of what?
The ability of a muscle to contract and relax is dependent on the flow of calcium ions. When a muscle is stimulated, calcium is released from storage sites within the muscle cell, allowing the muscle fibers to slide past each other and generate force. Removal of calcium from the muscle cell leads to relaxation of the muscle.
Which type of muscle CANNOT contract without being stimulated by the nervous system?
Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.
Which type of muscle ca be stimulated by norepinephrine?
smooth muscle
Does skeletal muscle need stimulation to contract?
Yes! Although we have total control over these muscles, they still need stimulation to contract. The difference with muscles that we don't control is that we decide if we want to make this stimulation.
How are voluntary and involuntary muscle different from each other?
Generally, voluntary muscles are striated and skeletal muscles, while involuntary muscles are smooth muscles and are visceral (located in organs). Voluntary muscles are muscles that can be consciously contracted, while involuntary muscles are muscles that are contracted at certain times or at all times without the conscious consent of the brain.
Which muscle trait is the ability to shorten and produce movement when stimulated?
The muscle trait that refers to the ability to shorten and produce movement when stimulated is called "contractility." This characteristic allows muscle fibers to contract in response to neural stimulation, generating force and enabling movement of body parts. Contractility is essential for all types of muscle movements, including voluntary actions like walking and involuntary actions like heartbeat.
What happens when The radial muscles of the iris contract?
When the eye is stimulated by bright light, the circular muscle of the iris contracts, decreasing the size of the pupil.
