During pregnancy the hormones which relax smooth muscle in other parts of the body (for example, the uterus and lining of the blood vessels) also relax the muscle at the entrance of the stomach (called the cardiac sphincter). Because of…
During pregnancy the hormones which relax smooth muscle in other parts of the body (for example, the uterus and lining of the blood vessels) also relax the muscle at the entrance of the stomach (called the cardiac sphincter). Because of…