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q what is the valve that separates the duodenum from the stomach called what is its functionthe valve that separates the stomach from the duodenum is
q what is the route of the ingested food from swallowing until the duodenumuntil reaching the duodenum the food enters the mouth passes the pharynx
q is the esophagus a muscular organ why even in a patient lying totally flat on a hospital bed can the swallowed food reach the stomachthe esophagus
q why doesnt the food enter the trachea instead of going to the esophaguswhen food is swallowed the swallow reflex is activated and the larynx closes
q what is the salivary digestive enzyme which type of food does it digest and into which smaller molecules does it transform the foodthe salivary
q what is the approximate ph of the salivary secretion is it an acid or basic fluid what are the main functions of salivathe saliva ph is
q what is the location of the salivary glands in humansthere are six major salivary glands and they are located one in each parotid gland two beneath
q from the lumen to the external surface what are the tissues that form the digestive tube wallfrom the internal surface to the external surface the
q what are peristaltic movements what is their role in human digestionperistalsis is the process of synchronized contractions of the muscular wall of
q which organs of the body is part of the human digestive systemthe digestive system also known as systema digestorium or gastrointestinal system is
q concerning extracellular digestion what is meant by chemical digestionchemical digestion is the series of enzymatic reactions to break
q what is mechanical digestion in molluscs earthworms arthropods birds and vertebrates in general which organs respectively participate in this type
q what are some evolutionary advantages of animals with complete digestive tubethe complete digestive tube permits animals to continuously feed
q what is the difference between an incomplete digestive and a complete digestive system system how are these types of digestive tubes associated or
q how is extracellular digestion related to tissue and cellular specializationa variety of specialized tissues and cells appeared with extracellular
q how different are extracellular and intracellular digestion what is the evolutionary advantage of extracellular digestionintracellular digestion is
q what is the importance of iron in diet what is the disease caused by iron deficiencyiron acts as a constituent of the hemoglobin molecule and of
q what are few examples of mineral salts from the diet that act as coenzymesmagnesium copper and zinc are examples of biological coenzymesq what is
q what are the main cellular functions of potassiummoreover being important for the osmotic regulation and for the acid-base equilibrium ph potassium
q what are the major mineral salts responsible for the cellular osmotic regulationthe main ions that act in the regulation of the osmotic pressure in
q what are the functions of pantothenic and biotin acid for the body how are these vitamins obtainedbiotin also known as vitamin b8 is a vitamin that
q why are some kinds of hemorrhagic diseases caused by genetic or acquired deficiency of the vitamin k metabolismdeficiency of vitamin k predisposes
q what is the function of vitamin e in which foods can it be foundvitamin e is also known as tocopherol is a fat-soluble vitamin that participates as
q what is the disease caused by vitamin d deficiency which tissue does it affectthe lack of vitamin d causes the disease known as rickets rachitis
q what is the association between sunrays and vitamin dvitamin d or calciferol is synthesized in the skin by the action of the ultraviolet range of