Intercalated discs Definition. These are transverse bands that separate the adjacent ends in cardiac muscle fibers. Normally these structures appear as stained irregular lines at 90 degrees to the striped sarcomeric pattern.ntercalated discs Location. As mentioned earlier, these discs connect the individual heart cells called cardiomyocytes to form the atrial syncitium. In fact, both intercalated discs and pacemaker cells are characteristic of cardiac muscle tissues.
There are 3 levels (grades) of sprains. Grade 1 sprain: minor sprain; 1-4 weeks to heal. Grade 2 sprain: medium to significant sprain. Swelling, bruising and pain included. Micro-fracture included as well ; 4-8 weeks to heal. Grade 3 sprain: Usually a gales tired or broken bone or torn ligament. Associated with severe swelling and bleeding and inability to move limb; 8-12 weeks or more depending on severity.
It usually takes 5 to 14 days to recover from a grade one ankle sprain. This is when slight stretching and damage occurs to the ligaments. With a grade one sprain, there is slight instability, pain, swelling, joint stiffness, and trouble walking. Grade two sprains can take 4 to 6 weeks to heal. This involves partial tearing of the ligaments. Signs of a grade two sprain include instability, moderate to severe pain, swelling, stiffness and possible bruising. Grade three sprains can take 8 to 12 weeks to heal. This is a complete tear of the ligament.