Hey frnd
Muscular to pump blood over long distance;
- Myogenic cardiac muscles which contract and relax rhythmically without fatigue; hence heart continues pumping;
- Cardiac muscle fibres interconnected to form a network of fibre to ensure rapid and uniform spread of excitation throughout the walls of the heart;
- Heart divided into 4 chambers which are hollow to accommodate more blood;
- Ventricles have thicker walls than auricles to generate higher pressure to drive blood over long
distance into more elaborate circulation/to the lungs and to all body tissues
