Answer: The correct answer is option c.
Explanation:
Cardiac conduction system is formed by specialized cardiac muscle cells which enable the heart to contract in coordinated fashion.
The main component of this system are:
- Sinoatrial node
- Atrioventricular node
- Bundle of His
- Branched bundle
- Punkinje fibers
SA node consists of cells known as pacemaker cells. These cells spontaneously generate action potentials which lead to the contraction of atria.
These potentials are then passed to AV node which relay them to bundle of His. These bundles are branched into right and left bundle which ultimately transfer these potentials to Purkinje fibers.
The potentials from these fibers lead to the contraction of ventricles.
Answer:
B
Explanation:
Water, sunlight and amount of oxygen in water
Answer:
The correct answer option is True.
Explanation:
The measure of the amount of space which an object or a substance can occupy is said to be its volume.
The basic unit of volume in the metric system is a liter while the SI unit of the volume is the cubic meter.
Therefore, the given statement is true.
Answer: Option C) recombination
Explanation:
Recombination is the process in which the chromosomes are broken and the fragments are rejoined in new combinations.
In eukaryotes, recombination is achieved by reassortment of chromosomes during meiosis and by crossing over.