The heart
What is the primary function of the heart?
To pump blood throughout the body
Veins rely on what structure to prevent backflow of blood?
valves
Which component of blood is responsible for transporting oxygen?
red blood cells
A person with type AB blood can receive blood from:
Any blood type
During exercise, why does the heart rate increase?
To deliver more oxygen to muscles.
How many chambers does the heart have?
4
Which blood vessel allows the exchange of oxygen, carbon dioxide, and nutrients with tissues?
capillaries
The liquid portion of the blood, plasma, is made mostly of:
Water
What blood type can a person with type O blood receive?
Only O
Which of the following blood components is found in the greatest amount?
plasma
Which side of the heart pumps blood to the rest of the body?
the left side
Arteries are characterized by:
Thick walls and carrying blood away from the heart
Platelets play a key role in:
Blood clotting
Which protein that, when introduced in the blood, triggers the production of an antibodies?
Antigens
Which side of the heart receives oxygen-poor blood from the body?
the right side
Which system carries blood to the lungs for gas exchange and returns it to the heart?
pulmonary circuit.
The thick muscular wall that separates the left and right sides of the heart is called the:
septum
What is the primary function of white blood cells?
Fighting infections
Blood type is determined by:
The presence or absence of specific antigens on red blood cells
Where would the oxygen levels be highest in the blood as it moves through the circulatory system?
Veins returning from the lungs
What are the four chambers called?
right atrium, right ventricle, left atrium, left ventricle
Which blood vessels have the thinnest walls?
capillaries
Hemoglobin is a protein found in:
red blood cells
What happens if a person receives the wrong blood type during a transfusion?
Their antibodies attack the transfused blood
A person has a genetic condition causing their red blood cells to be misshaped. How does this affect them?
Their blood cannot carry oxygen efficiently.