Some peptide/ protein hormones (angiotensin II, basic fibroblast growth factor -2, parathyroid hormone-related protein) also interact with intracellular receptors located in the cytoplasm or nucleus by an intracrine mechanism.eptide hormones are produced by many different organs and tissues, however, including the heart (atrial-natriuretic peptide (ANP) or atrial natriuretic factor (ANF)) and pancreas (glucagon, insulin and somatostatin), the gastrointestinal tract (cholecystokinin, gastrin), and adipose tissue stores (leptin).
Foot-and-Ankle Group. While your core muscles control ski-specific balance, your foot-and-ankle muscle group takes responsibility for the edging, pressure and rotational movements used in skiing. Your feet have intrinsic and extrinsic muscles.
The jump is a three-stage process. First, the grasshopper fully flexes the lower part of the leg (tibia) against the upper part (femur) by activating the flexor tibiae muscle (the back legs of the grasshopper in the top photograph are in this preparatory position).