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

Can it be influenced by environmental factors, Variation exhibited in share...

Variation exhibited in shared traits present in a population is due to alleles of the shared genes. can be influenced by interactions of alleles of multiple genes. Can be influence

Mitral valve, This valve has the same basic features as  of the Tricuspid V...

This valve has the same basic features as  of the Tricuspid Valve. It has an anterior and a posterior cusp. The anterior cusp is larger and is attached on the upper right part of t

Explain fusion inhibitor, Fusion inhibitor  After HIV binds to the host...

Fusion inhibitor  After HIV binds to the host cell surface, a conformational change occurs in the transmembrane glycoprotein sub- unit (gp41) of the viral envelope, facilitatin

Explain trifluridine, Explain Trifluridine  (Viroptic)  Trifluridine is...

Explain Trifluridine  (Viroptic)  Trifluridine is a nucleoside analog active against herpes viruses, including acyclovir-resistant strains. Marketed in an ophthalmic preparatio

Explain about oral irrigation devices, Oral irrigation Devices The use ...

Oral irrigation Devices The use of oral irrigation devices has been controversial due to concerns about incomplete plaque removal and potential separation of connective issue f

What is a biodigester, What is a biodigester? A biodigester is equipmen...

What is a biodigester? A biodigester is equipment that creates carbon dioxide, hydrogen sulfide and fuel gases (biogases) like methane from organic material under decomposition

Explain about crossing over, What is crossing over? How is meiosis related ...

What is crossing over? How is meiosis related to this phenomenon? Linked alleles, for instance, A-b and a-B, form the gametes A-b and a-B that maintain the linkage of the allel

External budgets - nutrient budgets, External budgets - Nutrient Budgets ...

External budgets - Nutrient Budgets In contrast the external budgets pertain to the input and output of the entire ecosystem in relation to other ecosystems. For instance volc

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