This allows the load cell to be hidden in the base of the pedals, where it is bolted to another piece of timber glued across the base. The clutch has a regressive action, with a linkage that pivots upwards on a couple of sealed bearings. The load cell is anchored at the top rear of the base. As the pedal moves into itâs travel, the stiffness decreases and the spring rotates upwards on a pair of bearings (hidden behind the bolts which are covering the spring in the pic below). You can see the 608-2RS bearings in the spring backplate, epoxied in place.
Intercalated discs Histology/Morphology. The cardiac muscle is normally found only in the heart. Here, the myocardial cells usually appear short, branched, and closely interconnected to form a continuous fabric. The cross-bands, however, get heavily stained between the adjacent cells during histological examination of the cardiac tissue.
Aims. Describe how heart action is coordinated with reference to the sinoatrial node (SAN), the atrioventricular node (AVN) and the Purkyne tissue. Be able to interpret and explain electrocardiogram (ECG) traces, with reference to normal and abnormal heart activity. The heart is made of cardiac muscle. When the cells receive an electrical impulse they contract-causing a heartbeat. Cardiac muscle is myogenic-it can contract on its own, without needing nerve impulses. Sinoatrial node (SA node) This specialized node is found on the upper inside wall of the right atrium. The SA node is known as the pacemaker of the heart and initiates a heartbeat every 0.85 seconds. This signal travels across the atria causing them to contract and load the ventricles with blood.