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Explain how a cardiac myocyte in the sinoatrial (SA) node can contract rhythmically. In your explanation, be sure to discuss the role of voltage-gated sodium and calcium channels, as well as hyperpolarization-activated cyclic nucleotide (HCN) channels.
Development
The biological process through which organisms grow and develop, often involving morphological changes, from embryonic stages to adulthood.
Influenza Virus
A highly contagious viral infection that affects the respiratory system, causing symptoms like fever, cough, and aches.
Genes
Units of hereditary information made of DNA, residing on chromosomes, and containing instructions for the development, functioning, and reproduction of organisms.
Nonviral Organisms
Organisms that do not belong to the virus category and are capable of independent reproduction and metabolism.
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