Cardiac cycle card sort

The Cardiac Cycle Card Sort

Instructions:

The basics Your aim is to build a correct functioning cardiac cycle Work in groups of three. When other members of the group are taking their turns, they cannot be interrupted, other

students should wait for their turn.

To build your cycle follow the steps below:1. Cut up all the cards and place them randomly face down.2. The first student to go turns over a card. They should then:

Read the card out loud Choose where to place the card in the growing cardiac cycle Explain the placement of their card

3. The next student can either: Turn over another card (see step 2) and place it Challenge the placement on an existing card, explain their reasoning and then move it

4. Continue to take turns until all cards have been placed.5. After the group has constructed their cycle they should discuss choices within the group,

then either check with their teacher, or discuss again together as a class. Optionally groups can be given time to compare their completed cycles with those constructed by other groups and then be given time to modify their own work.

Hints and help: Diastole is the stage of a heart beat in which the muscles in the heart relax whereas in

systole is the stage of a heart beat in which the muscles in the heart contract The event cards have been divided in such a way that more than one group of events may

match a particular stage of the cardiac cycle. People in a group may contradict each other, if you disagree with a choice, read the card

make a comment and move it.

https://bioknowledgy.wikispaces.com/ (Chris Paine)

Cardiac cycle card sort

Stages:

Atrial diastole

Atrial systole

Ventricular systole

Ventricular diastole

Diagrams:

https://bioknowledgy.wikispaces.com/ (Chris Paine)

Cardiac cycle card sort

Source of images: http://click4biology.info/

https://bioknowledgy.wikispaces.com/ (Chris Paine)

Cardiac cycle card sort

Events:

Semi-lunar valves are forced open Blood flows into the arteries

Muscular walls of the atria contract Volume of the atria reduces Hence pressure of the blood in the atria increases

All the heart muscle is relaxed All the valves are closed Blood is filling the atria

This closes Atrio-ventricular valves (blood hitting the A-V valves creates the ‘lub’ sound of the heart beat)

All the heart muscle is relaxed High blood pressure in the arteries forces the semi-lunar valves

to close. Blood is starting to flow into the atria

Atrio-ventricular valves are forced open Blood flows into the ventricles filling them Muscular walls of the ventricles contract Volume of the ventricles reduces Hence pressure of the blood in the ventricles increases

(blood hitting the semi-lunar valves creates the ‘dub’ sound of the heart beat)

https://bioknowledgy.wikispaces.com/ (Chris Paine)