R
The blood vessels that carry blood from the heart to the rest of the body.
Arteries
What catalyses the reaction between CO2 and H20?
Carbonic anhydrase
It is a pale yellow liquid that is made of 95% water. Substances are dissolved in it and are transported in the blood from one part of the body to another. What is it?
Blood Plasma
During ventricular systole, where is the pressure greater? The Ventricle or the Atrium?
Higher in the Ventricle
Point to the Left ventricle: (look at my screen )
correct spot
What does Carbonic Acid dissociate into? Give the names of the two ions and their formula ( including the charge on each ion)
HCo3 - and H+
Hydrogencarbonate ion and hydrogen iion
What is the name of the process that occurs when haemoglobin decreases its affinity for O2 in the presence of CO2?
The bohr shift
Where are old red blood cells broken down? And where are new red blood cells formed? State two placed in the body.
Broken down in the liver and new ones formed in the bone marrow
What are the three types of arteries called?
Elastic, Muscular and arterioles
Which blood vessels have the thickest walls of them all?
Arteries
What are the two parts of the mammalian circulatory system called?
Systemic and Pulmonary
Point to where the Atrioventricular valve opens on the diagram below.
correct spot
Tissue fluid is almost identical to Blood plasma, however it contains far fewer [ WHAT?] molecules. Why is that?
State the substance and the reason.
Protein molecules because they are too large to pass through, so tissue fluid does not contain these.
What do the muscular arteries do?
Tell me which direction do they carry blood? And from which type of arteries do they branch from?
They are branched from elastic arteries and the muscular arteries carry blood from the elastic arteries and deliver it close to the blood’s final destination.
What is AVN short for?
Atrioventricular node
What does the term myogenic mean?
Used to describe muscle tissue that can contract and relax even iwthout stimulation from a nerve.
What is SAN short for?
Sinoatrial node
Where does each cardiac cycle begin in the heart? Location and why?
In the right atria because the SAN node is located there
Where is the AVN located?
Septum
There are two names for the atrioventricular valves. What are their names and where are they in relation to their location in the heart?
Bicuspid valve on the left side and tricuspid on the right side.
What occurs during Atriole Systole? List:
What contracts
What is relaxed
Where the blood flows to and where from?
the valves that are closed
Contracts - Atria
Relaxed - ventricle
Blood flows from atria to ventricle
Valves closed semilunar valves
Why is it important to have a delay between the impulse of the SAN and the AVN?
It allows time for the ventricles to fill with blood. Otherwise both the atria and the ventricles will contract at the same time.
What is the purpose of the AVN?
To transfer the wave of excitation from the walls of the atria to the purkyne tissue.
What is the difference between AV valves and Semilunar valves?
Focus on their location
Atrioventricular valves are between the atria and the ventricles whereas the semilunar valvesa are between the ventricles and the major arteries( pulmonary and aorta).
What is the difference between carboxyhaemoglobin and carbaminohaemoglobin?
Carboxyhaemoglobin is when Carbon monoxide binds with haemoglobin and carbaminohaemoglobin is when carbon dioxide binds with haemoglobin