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It is actually both.
Cali Lubowitz
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Is whistling voluntary or involuntary?
voluntary, you cause your lips to form the shape to whistle, and cause the air to be pushed out. if whistling were involuntary, you would do it without making an effort (like your heart pumping, digesting things, etc)
What features do cell have?
muscle contain special proteins called contractile proteins, they contract and relax to cause movement. Muscles are generally of two types (1) voluntary muscle and (2) involuntary muscle.
Is a smooth muscle a voluntary muscle or involuntary muscle?
Yes, smooth muscle is involuntary muscle, meaning it will cause actions that you don't have to think about. For example, your vasculature is surrounded by smooth muscle to allow dilation or constriction of blood vessels to help control blood pressure and shunt blood away from or to certain regions of the body.
What causes involuntary sharp intake of breath?
An emotional shock or pain can cause a sharp intake of breath.
Which muscle type is voluntary in action?
The skeletal muscle is the only type of muscle which is voluntary.
Is a reflex is a voluntary action?
No, it is by definition involuntary. The neural impulses which cause the action do not go through the brain at all.
Why is voluntary muscle also called skeletal muscle?
They contract when stimulated by motor neurons of the Central Nervous System or CNS (Martini & Nath, 2009).Reference:Martini, F. & Nath, J. L. (2009). Fundamentals of anatomy & physiology. San Francisco: Pearson/Benjamin Cummings.Voluntary muscles are ones that you have the ability to consciously control: Arms, legs, mouth, head movement, etc. Most of the major muscle groups used or movement and communication are voluntary.Involuntary muscles would be things like your heart and the muscles around your intestines, which you generally cannot consciously control.The skeletal is called "voluntary" muscle because it is usually subject to conscious control.Voluntary muscles are muscles that move because you decide to cause them to move. You also have involuntary muscles that move on their own without your thinking about it, and usually you are not able to influence their movement much.Voluntary muscles are muscles that move because you decide to cause them to move. You also have involuntary muscles that move on their own without your thinking about it, and usually you are not able to influence their movement much.
What does shivering cause you to do?
Shivering causes you too involuntary contract and relax your muscles to increase heat production.
What causes uncontrollable muscle movements?
Involuntary muscle movement includes peristalsis in the GI tract and the beating of your heart. Generally involuntary muscles are smooth muscles (intestines, blood vessels), but the cardiac muscles are sometimes categorized as striated due to their structural similarities to skeletal muscles.
Can females flex their breast?
No. There is no voluntary muscle in the breast. They can flex the chest muscles under the breast and so cause them to move.
Does the human heart stop every time someone sneezes?
This is a fallacy, the heartbeat is an involuntary muscular contraction and has nothing to do with the muscles that cause a sneeze.
How the muscle of the heart different from other muscle of the heart?
The heart muscle is different from smooth and skeletal muscles because it does not require a nerve to cause it to contract. The heart has it's own built in conduction system that cause's the automatic contraction and relaxation that is required for circulation. Smooth and Skeletal muscle whether it uses voluntary or involuntary muscle contraction all have innervation to cause the contraction. Sara, RN
