Systolic vs. diastolic pressure Classify the following as characteristic of systolic or diastolic blood pressure. One choice applies to both. Systolic Diastolic The lowest arterial pressure Decreases with distance from the left ventricle Occurs while the heart ventricles are relaxing The highest arterial pressure Reached during ejection of blood from the heart Normal level is 120 mm Hg Normal level is 80 mm Hg
Added by Andrea C.
Close
Step 1
Step 1:** Identify the characteristics of systolic blood pressure: - The highest arterial pressure - Reached during ejection of blood from the heart - Normal level is 120 mm Hg - Decreases with distance from the left ventricle ** Show more…
Show all steps
Your feedback will help us improve your experience
Riaan S and 58 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents the results. Use a TI-84 calculator to answer the following. Systolic Diastolic Systolic Diastolic 115 83 130 76 113 77 116 70 123 77 133 91 119 69 112 75 118 88 107 71 Based on results published in the Journal of Human Hypertension
Paul A.
A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury (mmHg), for a sample of eight adults. The following table presents the results. Systolic Diastolic 127 92 125 94 135 87 110 75 123 89 121 87 118 87 127 93 The least-squares regression equation is ŷ = 18.7841 + 0.5616x. If the systolic pressures of two patients differ by 8 mmHg, by how much would you predict their diastolic pressures to differ?
David N.
Blood pressure. Systemic blood pressure is expressed as the ratio of the systolic pressure (when the heart first ejects blood into the arteries) to the diastolic pressure (when the heart is relaxed): systemic blood pressure $=\frac{\text { systolic pressure }}{\text { diastolic pressure }}$ Both pressures are measured at the level of the heart and are expressed in millimeters of mercury (or torr), although the units are not written. Normal systemic blood pressure is $\frac{120}{80}$ . (a) What are the maximum and minimum forces (in newtons) that the blood exerts against each square centimeter of the heart for a person with normal blood pressure? (b) As pointed out in the text, blood pressure is normally measured on the upper arm at the same height as the heart. Due to therapy for an injury, a patient's upper arm is extended 30.0 $\mathrm{cm}$ above his heart. In that position, what should be his systemic blood pressure reading, expressed in the standard way, if he has normal blood pressure? The density of blood is 1060 $\mathrm{kg} / \mathrm{m}^{3}$ .
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD