Lamina propria is
Layer of loose connective tissue
It is a part of Mucosa layer of Alimentary canal
Also contain gland for secretion of gonadotropin harmones
Both 1 and 2
As we have learnt in
Mucosa: It is composed of simple epithelium cells and a thin connective tissue - areolar tissue. The layer of areolar connective tissue is called lamina propria. In addition, the mucosa has a thin, smooth muscle layer, called the muscularis mucosa. Mucosa forms glands in the stomach (gastric glands) and crypts in between the bases of villi in the intestine (crypts of Lieberkuhn).
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Hence, the correct answer is option d.