Functional properties of cardiac muscle, Biology

Functional Properties of Cardiac Muscle

The functional properties of cardiac muscle differ from the skeletal muscle in two important respects. One is that, when a contraction starts in one area of the heart muscle mass, it rapidly spreads throughout the muscle mass. During contraction the cell membrance of the cardiac muscle fibres undergoes electric changes, known as action potentials.

The second peculiarity of the heart muscle is that, the cell membrane after completion of an action potential remains in a refractory state for a long enough time to allow the muscle to relax. Because of this refractory period, the cardiac muscle cannot go into a sustained contraction. The refractory period is thus essential for the alternation between contraction and relaxation vis-a-vis normal rhythmic contraction of the heart.

Posted Date: 1/16/2013 4:43:54 AM | Location : United States







Related Discussions:- Functional properties of cardiac muscle, Assignment Help, Ask Question on Functional properties of cardiac muscle, Get Answer, Expert's Help, Functional properties of cardiac muscle Discussions

Write discussion on Functional properties of cardiac muscle
Your posts are moderated
Related Questions
Explain Micafungin It is an echinocandin indicated for treatment of esophageal candidiasis and prophylaxis of invasive Candida infections in patients undergoing hematopoietic s

What are fluid and deposit feeding in holozoic animals

Determine about the Parameters of Fitness? There are five basic components of physical fitness, which involve heart, lungs, strength, endurance and flexibility. To improve the

CHONDROITI N SULPHATE It is a linear polymer of sulphated N-acetylgalactosamine alternating with glucuronic or iduronic acid. The complex also occurs in skin, tendon and ca

Which of the following is an effect of the following drugs? A. Drug A is an agonist of the Vasopressin2 Receptor (V2R).  High levels of Drug A in the extracellular spaces surro

CRANIAL NERVES 12 pairs. Total weight 12 gms. Upto amphibian 10 pairs cranial nerves are present. 1, 2, 8, - sensory. 3, 4, 6, 11, 12, motor. 5, 7, 9, 10 - mixed. 3

Q. What is Goitrogens anti-thyroid substance? Ans. Goitrogenslanti-thyroid substances present in certain plant foods have been found to interfere with the uptake of iodine

What is Ascending Aortic Aneurysm ? Ascending Aortic Aneurysm :  In aneurysms confined to ascending aorta well below the innominate artery origin, the technique used is

Explain Acute Renal failure Acute Renal failure:  Renal failure associated with burns or other trauma or with sharp infection or obstruction of the urinary tract.

Q. What is the difference between simple closed circulation and double closed circulation? Double closed circulation or Closed circulation is that in which the blood circulates