How is heart contraction triggered, Biology

Assignment Help:

How is heart contraction triggered?

Heart contraction is independent from neuronal stimulus (although it can be modulated by the autonomous nervous system). In the heart there are pacemaker cells that trigger by themselves the action potentials that start the muscle contraction. These cells are concentrated at two special points of the heart: the sinoatrial node (SA node) situated in the superior portion of the right atrium and the atrioventricular node (AV node) situated near the interatrial septum.

 


Related Discussions:- How is heart contraction triggered

State the term - psychophysiology, State the term - Psychophysiology Th...

State the term - Psychophysiology This refers to the study of psychological theories using physiological measures. In other words, psycho-physiologists normally try to understa

Why bacteria can be transmitted from person to person, Identify three ways ...

Identify three ways that bacteria can be transmitted from person to person. Diseases affecting nerves contain botulism and tetanus; diseases affecting the intestine include sa

What are the three main parts of a eukaryotic cell, The eukaryotic cell can...

The eukaryotic cell can be separated into two major portions: the cell membrane that divides the intracellular space from the outer space phisically delimiting the cell; the cytopl

Lysosomes, Lysosomes Lysosomes are small vesicles which are bounded ...

Lysosomes Lysosomes are small vesicles which are bounded by a single membrane & contain hydrolytic enzymes in the form of minute crystalline or semi crystalline granules of

Phylum mollusca, PHYLUM  MOLLUSCA Definition  and Introduction B...

PHYLUM  MOLLUSCA Definition  and Introduction Basically bilateral and protostomial eucoelomate  eumetazoans  whose soft body (L. Millis  or molluscum= soft) is unsegmente

Health hazards with poor management of bio-medical waste, Health Hazards wi...

Health Hazards with poor management of Bio-medical waste Health hazards associated with poor management of Bio-medical waste are: - Injury from sharps to staff and waste han

Risk factor modification, Risk Factor Modification :  Even after CABG,...

Risk Factor Modification :  Even after CABG, patients are at risk of progression of native coronary artery disease and development of lesions in the conduits. Modification of

Characteristics of genetically modified foods, Normal 0 false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

What are the major terrestrial biomes, What are the major terrestrial biome...

What are the major terrestrial biomes? The main terrestrial biomes are: tundra, taigas (or boreal forest), tropical forests, temperate forests, grasslands and deserts.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd