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Why do you have sphincter muscles at the entrance and exist of the stomach?
Wiki User
∙ 11y ago
to help keep everything in line
Wiki User
∙ 11y ago
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What would happen if your heart or stomach were made out of voluntary muscles?
If such things were voluntary we would not exist.
What controls the passage of material from the small intestine to the large intestine?
There are structural (anatomical) and functional (physiological) ways the digestive system regulates how food is passed from the stomach to the small intestine. The major anatomical regulators are the pyloric sphincter (a muscular band that acts like a valve to open and close the connection between the stomach and small intestine) and the pyloric antrum (the part of the stomach commonly associated with stomach motility, mixing, and propulsion of stored foodstuffs into the small intestine). When the pyloric sphincter is relaxed and the antrum is active, food is propelled into the small intestine; when the sphincter is constricted and the antrum is relaxed, food is stored in the stomach. A number of physiological factors exist that regulate the activity of the pyloric sphincter and antrum. The principal regulators are nerves and hormones involved in the digestive process. The vagus nerve is an example of a nerve with major regulatory effects on motility of the stomach and small intestine. Gastrin and cholecystokinin (CCK) are gut hormones also involved in stomach motility. Gastrin is secreted in response to food (particularly amino acids, the building blocks of proteins) in the stomach and stimulates antral motility that serves to mix food. Strong antral contractions cause opening of the pyloric sphincter and the movement of food into the small intestine. CCK is released in response to foodstuffs (particularly fats) in the small intestine and inhibits antral motility of the stomach.
What are some examples of circular muscles?
There are some radial muscles that exist in the eye. Radial muscles have a similar structure to that of spokes on a bike, radiating outward from their source. The extraocular muscles of the eyes connect to the eye in several different locations around it to allow movement in different directions according to which extraocular muscle contracts.
What other involuntary muscles exist besides the heart?
If by involuntary you mean acting of its own accord, the organ the lungs act without you controlling them, even when you hold your breath eventually you will breathe of your own accord. The stomach and intestines are involuntary muscles.
What risks exist for the patient in undergoing an external sphincter electromyography?
Complications of external sphincter electromyography are rare. Occasionally patients report blood in their urine after being tested with needle electrodes. Also, the urethra may become mildly irritated causing a change in the normal.
What is a contractile myoblast?
Myoblasts are a type of stem cells that exist in muscles.
How do muscles help you do everything you do?
Without muscles, we couldn't see the computer screen, move our fingers, type on the keyboard, walk, or even eat or drink food. In fact, without muscles, we couldn't exist.
How can hydrochloric acid exist in stomach without hurting you?
The concentration of hydrochloric acid in stomach is not so great; but above the normal concentration HCl is dangerous.
What happens when sensory nerves are cut or removed in the stomach?
When sensory nerves are cut or removed in the stomach, changes in eating habits will occur. Hunger itself will still exist though.
What would happen when we wouldn't have any muscles?
We would not exist. Remember, apart from needing muscles attached to our bones to provide movement, the heart is a vital four cambered muscular pump!
Do man eating pies exist?
They could, if they had some type of chemical in them that eats skin or your stomach walls. REAL nice question!!!
What is a weave lane?
A weave lane is the part of the highway or freeway where both an entrance and exit exist. It is called this because cars will be weaving in and out of lanes to either enter or exit.
