Which correctly relates a function with a type of tissue?
contraction of the heart : skeletal muscle tissue
constriction of blood vessels : voluntary muscle tissue
insulation of the body : nervous tissue
stomach acid secretion in the digestive tract : epithelial tissue.

Stomach acid secretion in the digestive tract : epithelial tissue correctly relates a function with a type of tissue.  

Epithelium tissue is a membranous tissue that is composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs; internally (the lining of blood vessels and other small cavities), and externally (the skin). Part of the functions of epithelial cells is secretion. Some epithelial cells secrete certain chemical compounds and mucous onto their surfaces.  Examples are; the secretion of stomach acid in the digestive tract, and the secretion of mucous in the respiratory tract. Other functions of epithelium tissues include; protection of the body, selective absorption and sensing.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.