IB Biology Topic B3.2.4 Measurement of Pulse Rates Revision Notes (SL/HL)

IB Biology Topic B3.2.4 Measurement of Pulse Rates Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Your Pulse Is a Direct Measure of Your Heart Rate

Every heartbeat sends a surge of blood through your arteries, creating a pressure wave that travels along the vessel walls.
Where arteries run close to the skin, such as the wrist or neck, you can feel this wave as a pulse.
Each pulse matches one heartbeat, so counting your pulse is a direct way to find your heart rate.

Definition

Pulse

A pulse is the pressure wave created by each heartbeat as blood travels through arteries near the skin’s surface.

Manual Measurement: Finding Your Pulse by Hand

Radial pulse (wrist): use the radial artery on the thumb side of your wrist.
1. Place two or three fingertips, not your thumb, lightly on the underside of your wrist just below the base of your thumb.
2. Press gently until you feel the rhythmic beats.
3. Count the beats for 30 seconds and multiply by two for beats per minute, or count a full minute for greater accuracy.

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Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Your Pulse Is a Direct Measure of Your Heart Rate

Every heartbeat sends a surge of blood through your arteries, creating a pressure wave that travels along the vessel walls.
Where arteries run close to the skin, such as the wrist or neck, you can feel this wave as a pulse.
Each pulse matches one heartbeat, so counting your pulse is a direct way to find your heart rate.

Definition

Pulse

A pulse is the pressure wave created by each heartbeat as blood travels through arteries near the skin’s surface.

Manual Measurement: Finding Your Pulse by Hand

Radial pulse (wrist): use the radial artery on the thumb side of your wrist.
1. Place two or three fingertips, not your thumb, lightly on the underside of your wrist just below the base of your thumb.
2. Press gently until you feel the rhythmic beats.
3. Count the beats for 30 seconds and multiply by two for beats per minute, or count a full minute for greater accuracy.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic B3.2.4: Measurement of Pulse Rates Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Your Pulse Is a Direct Measure of Your Heart Rate

Manual Measurement: Finding Your Pulse by Hand

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Your Pulse Is a Direct Measure of Your Heart Rate

Manual Measurement: Finding Your Pulse by Hand

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account