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Blood pressure

Transcript: Blood Pressure What is Blood Pressure? Blood Pressure is the force exerted against the blood vessels. This varies on different parts of your body, but it is strongest in your left arm. There are 2 parts to taking blood pressure, systolic and diastolic. Blood Pressure is written similar to a fraction. The way it is written is systolic over diastolic. Systolic- Systolic pressure is the pressure exerted against the arteries as the heart beats. Diastolic- Diastolic pressure is the pressure exerted against the arteries as the heart relaxs between beats. Taking Blood pressure! First, get the correct devices you will need. (Stethoscope and Blood Pressure Cuff) Second, put the cuff on snuggly on your elbow. Third, put the stethoscope under the cuff, posterior of the elbow. Inflate the cuff to 180, and slowly release pressure. When you hear the first heart beat, that is the systolic. Once the heart beat can no longer be heard, that is your diastolic. Example: Pulse rate is also an important part to blood pressure, as it is what you are listening to. Pulse rate is the number of times your heart beats in a given time. Typically, you count the number of beats in a 15 second time span and multiply by 4. You can find your heart rate in multiple places on your body. Two locations for finding your pulse is on your neck and wrist. For an average adult, the resting heart rate should be between 60-100. If you are an athletic human, it can get as low as 40. A lower heart rate generally implies that the person has a more efficent cardiovascular fitness and heart function.

Blood Pressure

Transcript: Blood Pressure Negative Loop The blood pressure negative loop is a cyclical process common in the physiology of mammals. It's function is to reestablish homeostasis, the general process of regaining physiological balance in order to survive. The loop is also a major process in the circulatory system, and so involves the use of the heart, veins and arteries. The brain also plays a significant part of the blood pressure negative loop. Integration Center-The Brain Stimulus-Blood Pressure Increases Increases in blood pressure are actually naturally occurring, as they are a means to supply our bodies' muscles with the oxygen they need. Similarly, when the body is deprived of food, the normal range of metabolism can be reset to a less than normal value. And so decreases in blood pressure are also naturally occurring. Whenthese increases or decreases go unregulated either the muscles can burn-out from a lack of oxygen supply or that the body will ever metabolize and likely starve the animal to death. In conclusion, although there is no end to this loop, many animals bodies (including humans) require this function to survive. References By Patrick B. Richardson Now what? The brain then signals the heart and blood vessels to compensate for the measured increase in blood pressure. Nerve receptors in the Carotid arteries detect and access the increase in blood pressure. Response-Blood Pressure Decreases Recepter-Carotid Arteries First blood pressure is increased to supplement the muscles with more oxygen, thus activating the loop. Effectors-Heat and Blood Vessels After the nerves in the Carotid Arteries detect an in crease in blood pressure, they signal the brain and ask what needs to be adjusted in order to achieve stability in the body, AKA homeostasis. What is it? Lastly the animal's heart rate decreases and the diameter of its blood vessels increases, causing the animals blood pressure to revert back to its normal range.

Blood Pressure

Transcript: Listen to the music and think of a nightmare that you have had Put this memory and feeling into words. You can do this however you want How did you do that? What techniques did you use? Nightmares Learning Objective: To understand the function of the nightmare Lets have a look at the nightmare What technqiues does the writer use? Are they the same as yours? What is good about the opening? What doesn't work? What does this suggest about the rest of the novel? Genre- a type of literature or film Where do you think 'Blood Pressure' belongs? LO: To Recap the novel so far To analyse how the writer uses language 1. Find a sentence from Chapter one that builds tension and explain how it does this. 2.How can we tell that Aiden has mixed feelings about going to Liverpool? 3. Why do you think Aiden wants to meet the girl he met at the end of Chapter 1? 4. What can we tell about Aiden from the way he judges people, like the people in the cafe and his grandparents? Skim read the chapters and give a breif overview of how relationships have changed and developed in this chapter Scan the text and find examples of the following A Simile A Metaphor Alliteration Hyperbole and comment on their effect On the pieces of sugar paper you have, track the relationship between Aiden and his Mum and Jade Think about why these relationships change Does this change our original predictions? With your partner discuss: Meets Dave Gorman Blood Pressure (cc) image by jantik on Flickr 2002 March Arrives in Liverpool What has happened? Does the tone of the novel change? How and why?

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