Regulation of heartthe number of electrical impulses, Ask an Expert

Academics

Regulation of Heart

The number of electrical impulses initiated by the SA node is primarily the result of its innervation by fibers from both sympathetic and parasympathetic branches of the autonomic nervous system. Sympathetic branch have a positive chronotropic effect (increase in rate) while parasympathetic branch have a negative chronotropic effect (decrease in rate). Parasympathetic innervations occurs by way of the vagus nerve. Sympathetic nerve fibers, when stimulated release norepinephrine at the nerve endings and comprise what is called the adrenergic system.

The central nervous system regulate the heat through the cardiac center in medulla and the hypothalamous.

View complete question

Biology, Academics

Category:- Biology
Reference No.:- M9514234

Have any Question?Write your Review or question?

Related Questions in Biology

What changes would you expect to see in the liver cells of

What changes would you expect to see in the liver cells of someone suffering from chronic alcoholism?

Two true-breeding stocks of pea plants are crossed one

Two true-breeding stocks of pea plants are crossed. One parents has red, axial flowers and the other has white terminal flowers; all F1 individuals have red, axial flowers. The genes for flower color and location assort ...

1 is a vitamin that sunlight on the skin typically

1. __________ is a vitamin that sunlight on the skin typically triggers within the body. 2. The specific cell type that produces bone tissue is called _____________. 3. The four components of a negative feedback loop ___ ...

Use of molecular tools and bioinforrnatics in the diagnosis

Use of Molecular Tools and Bioinforrnatics in the Diagnosis Characterization of Enteric Pathogens from a Case Study Purpose: The purpose of this project is to familiarize the student with modern molecular tools and bioin ...

What is the difference between systole and diastole and how

What is the difference between systole and diastole, and how do they relate to Systolic blood pressure and diastolic blood pressure?

Discussion board 3 dnaafter reading the prompt below post

Discussion Board 3: DNA After reading the prompt below, post your answer using about 200 words. Post your initial response at least 24 hours prior to the assignment due date, then return to respond to another classmate's ...

Question darwin was not the first to consider evolution as

Question: Darwin was not the first to consider evolution as a process but he did come up with the first effective explanation for how it happens. Describe Darwin's theory of evolution by natural selection. Explain how th ...

Assignment -the upper-case blue letters are the 14th exon

Assignment - The upper-case, blue letters are the 14th exon (of 20) in the Hephl1 gene in mice. The lower-case (black) letters are from the flanking introns. The highlighted bases indicate primers that may be used to ge ...

Question - gene cloning a please write the steps to clone

Question - Gene Cloning a) Please write the steps to clone the protease gene from Bacillus strain whose genome sequence is not known. b) Express the protease gene to obtain the enzyme in high yield, please plan your prot ...

Question write a 525- to 700-word paper on the genetic

Question: Write a 525- to 700-word paper on the genetic disorder (Sickle Cell Disease ). Include the following in your paper: Summarize the Chromosomal Theory of Inheritance and how chromosomal abnormalities can lead to ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Biology Expert