From Study Guide Questions & Ans 100% Correctly Verified Graded A+

Parathyroid hormone (PTH) is stimulated by what? {Ans: When blood calcium levels decrease PTH levels increase and stimulates the release of calcium from bone and absorption of calcium in the small intestines and kidneys}Histamine {Ans: Histamine is a small molecule produced by mast cells and basophils as part of allergic reaction. It increases permeability of capillaries in the region causing localized swelling.}renal medulla (of kidney) {Ans: inner portion of the kidney}neuromuscular junction {Ans: point of contact between a motor neuron and a skeletal muscle cell}The sarcolemma is the {Ans: plasma membrane of a muscle fiber}What is the function of smooth muscle? {Ans: swallowing, contractions in the GI tract, uterine contractions, control blood pressure and blood flow, control airflow in lungs, pupillary diameter, expulsion of urine and feces, piloerector muscles}