How does the heart function as a pump Answer: How the heart works, and how it can cause sudden death In order to understand why sudden death can happen, it helps to understand how the heart works. Figure 1: How the heart functions electrically The heart's natural pacemaker – the SA node – sends out regular electrical impulses from the top chamber (the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle). The electrical impulse is then conducted to the ventricles through a form of 'junction box' called the AV node. The impulse spreads into the ventricles, causing the muscle to contract and to pump out the blood. The blood from the right ventricle goes to the lungs, and the blood from the left ventricle goes to the body. The heart has four chambers – two at the top (the atria) and two at the bottom (the ventricles). The normal trigger for the heart to contract arises from the heart's natural pacemaker, the SA node, which is in th
10 payo ng magulang? Answer: Explanation:Huwag aalis ng bahay. Huwag kumain ng tsitsirya. Mag aral ng mabuti. Mag papakabait sa iyong guro o kaklase. Kumain ng masustansiyang pagkain. Huwag maglaro sa putikan. Ubusin ang pagkain sa mesa. Huwag mag iinternet. Huwag sumama sa hindi mo ka kilala. Huwag sumabat sa usapan ng matatanda.
Do the following exercises. 1. Give 3 examples of well-defined sets. Answer: Here are examples of a well-defined set Step-by-step explanation: A well-defined set is a set with a precisely given collection of objects called elements. Well-defined simply pertains to any object that is either an element of that particular set or it is not. Note that the order of the elements doesn't matter. The notation x S is read as "x is an element of S" Here are three examples of a well-defined set: 1. The set of all even numbers between 1 to 13. This is a well-defined set because its individual members are exactly {2, 4, 6, 8, 10, 12} and nothing more or less. 2. The set of Grade 8 students in Xavier School with ages 13 and 14. This is a well-defined set because it only includes Grade 8 students in Xavier School with the mentioned ages. Any grade 8 student in Xavier who are not aged 13 and 14 are not included. 3. The set of right-handed female teachers in Miriam College.
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