[Trachea, monkey; x-section, PTS]. The lumen of the trachea is lined by pseudostratified columnar epithelium. Note that all the surface cells have cilia at their free (apical) surface.(What function do these cilia serve in the trachea?) Mucus-secreting unicellular gland cells (goblet cells) are interspersed among the ciliated cells.Trachea, monkey; x-section, PTS]. The lumen of the trachea is lined by pseudostratified columnar epithelium. Note that all the surface cells have cilia at their free (apical) surface.
Complex Carbs on Restrictive Low-Carb Diets. If you're on a restrictive low-carb diet, you may be limited to just 20 grams of net carbs per day. That excludes virtually any food rich in complex carbohydrates, as a single serving of any of the previously mentioned foods contains more than your daily limit.
If you exercise moderately, the ADA recommends consuming at least 2.3 g of carbohydrate per 1 lb. of body weight per day. Very active people should aim for at least 4.5 g of carbohydrate per 1 lb. of body weight. In other words, if you are extremely active and weigh 150 lbs., your daily diet should contain 675 g of carbohydrate and about 5,000 calories.