Structures of the heart and path of blood flow
The beating heart
Blood vessels
The bloodstream
The immune response
100
The top chambers of the heart
What are the atria?
100
The pacemaker of the heart
What is the sinoatrial node?
100
Structures which allow veins to prevent blood from flowing in the wrong direction.
What are valves?
100
Cells of the blood that lack a nucleus.
What are erythrocytes and platelets?
100

The term used to refer to non-specific leukocytes.

What are phagocytes?

200
The side of the heart that handles oxygenated blood
What is the left side? (left atrium and left ventricle)
200
The atrioventricular node transmits an electric signal through this structure to the Purkinjie fibres
What is the Bundle of His?
200
These blood vessels are part of the systemic pathway, carrying oxygenated blood away from the heart.
What are arteries?
200
The liquid portion of the blood.
What is the plasma?
200

Seeks out an intruder, makes a blueprint and signals an attack

What are T cells?

300
Deoxygenated blood is pumped from the right ventricle through pulmonary arteries to this location
What are the lungs?
300
This is the first chamber of the heart to contract with each pulse.
What is the right atrium?
300
Blood vessels that are composed of a single layer of cells.
What are capillaries?
300
An iron-containing respiratory pigment required for erythrocytes to bind oxygen
What is hemoglobin?
300
Proteins present on the cell membranes of pathogens and red blood cells.
What are antigens?
400
A structure that prevents the mixing of oxygenated and deoxygenated blood in the heart
What is the septum?
400
The term used to refer to the minimum pressure of blood vessels before ventricular contraction.
What is diastolic pressure?
400
Medical term used to describe the blockage of arteries due to the buildup of plaque.
What is arteriosclerosis?
400
The scientific name for cells of the blood that play a role in the immune response.
What are leukocytes?
400

Type O- blood is also known as 

What is the Universal donor? 

500
Blood vessels which are responsible for returning oxygenated blood to the heart from the lungs
What are the pulmonary veins?
500
Purkinjie fibres control the contraction of these structures
What are the ventricles?
500
Blood vessels undergo this process in order to conserve heat.
What is vasoconstriction?
500

Cancer of the WBC. Crowding out of the RBCS


What is leukemia?

500
Part of the third line of defense, these lymphocytes monitor Killer T-cells to make sure they do not destroy healthy tissues.
What are Suppressor T-cells?
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