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Atrial natriuretic peptide (ANP) or atrial natriuretic factor (ANF) is a natriuretic peptide hormone secreted from the cardiac atria that in humans is encoded by the NPPA gene. [5] Natriuretic peptides (ANP, BNP , and CNP ) are a family of hormone/paracrine factors that are structurally related. [ 6 ]
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
These cells produce an electrical impulse known as a cardiac action potential that travels through the electrical conduction system of the heart, causing it to contract. In a healthy heart, the SA node continuously produces action potentials, setting the rhythm of the heart (sinus rhythm), and so is known as the heart's natural pacemaker.
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.
C-type natriuretic peptide (CNP), the third hormone, was isolated from the swine brain and could relax smooth muscle. The three hormones share a similar structural makeup but come from different genes. [3] These preliminary findings produced more investigation to establish the genetic makeup and regulatory mechanisms of these molecules.
The process of depolarization is entirely dependent upon the intrinsic electrical nature of most cells. When a cell is at rest, the cell maintains what is known as a resting potential. The resting potential generated by nearly all cells results in the interior of the cell having a negative charge compared to the exterior of the cell.
Major factors influencing cardiac output – heart rate and stroke volume, both of which are variable. [1]In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols , ˙, or ˙, [2] is the volumetric flow rate of the heart's pumping output: that is, the volume of blood being pumped by a single ventricle of the heart, per unit time (usually measured ...
4879 18158 Ensembl ENSG00000120937 ENSMUSG00000029019 UniProt P16860 P40753 RefSeq (mRNA) NM_002521 NM_001287348 NM_008726 RefSeq (protein) NP_002512 NP_002512 NP_001274277 NP_032752 Location (UCSC) Chr 1: 11.86 – 11.86 Mb Chr 4: 148.07 – 148.07 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Brain natriuretic peptide (BNP), also known as B-type natriuretic peptide, is a hormone ...