Complete the following sentence that describe the alimentary canal and its walls:
the contains the surface epithelium that allows for absorption of nutrients, as wells as glands for secretion.

Mucosa

Explanation:

The mucosa is the innermost layer of the wall of the digestive tract. It is a moist epithelial membrane and is rich in mucus-secreting goblet cells. The mucosa of the wall of the digestive tract contains glandular epithelial cells. The function of these cells is to secrete the digestive enzymes.

The Lamina propria of the mucosa is loose areolar connective tissue with an extensive network of capillaries. This layer of mucosa serves in the absorption of digested nutrients.

b. heterotroph

explanation:

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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