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The heart muscle is myogenic and initiates a heartbeat through an electrical conduction system; both the sinoatrial node and atrio-ventricular node are essential in this mechanism.
Within the heart the atria contract creating a high pressure and squeezing blood into the ventricles. The semi lunar valves are closed so pressure within the ventricles builds up.Pressure within the ve...
Phylogeny is the study of the evolutionary relationships of organisms. A good acronym to learn this is King Plays Cards on Fat Girls Stomach.K - Kingdomp - PhylumC - ClassO - OrderF - Family G - Genus S -...
Throughout your answer to this question make sure that you are cramming as much key language into it as possible! Phrases like 'islets of Langerhans', 'beta/alpha cells', and 'transporter proteins' will a...
The cardiac cycle is what happens during a single heartbeat.
To understand the cycle it helps to know that the heart is made up of four chambers, the top 2 chambers are called the atria a...
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