What condition occurs when fatty deposits (plaque) develop in the inner walls of arteries, clogging the passage way of blood flow.

What condition occurs when fatty deposits (plaque) develop in the inner walls of arteries, clogging the passage way of blood flow.

Answer: atherosclerosis

What large blood vessels carry blood from aorta to the tissues of the heart?

What large blood vessels carry blood from aorta to the tissues of the heart?

Answer: coronary arteries

What disease of the heart and blood vessels is responsible for 40% of all deaths in the U.S.?

What disease of the heart and blood vessels is responsible for 40% of all deaths in the U.S.?

Answer: cardiovascular disease

Exchanging wastes and nutrients, controlling chemical balance, controlling composition of blood, regulating body temperature, distributing hormones, and defending against foreign invaders are all ways the circulatory system maintains _____________.

Exchanging wastes and nutrients, controlling chemical balance, controlling composition of blood, regulating body temperature, distributing hormones, and defending against foreign invaders are all ways the circulatory system maintains _____________.

Answer: homeostasis

What condition is the cancer of white blood cells?

What condition is the cancer of white blood cells?

Answer: leukemia

What condition may result from the inability to clot blood?

What condition may result from the inability to clot blood?

Answer: hemophilia

Platelets release clotting factors that convert _______ to a threadlike protein called fibrin.

Platelets release clotting factors that convert _______ to a threadlike protein called fibrin.

Answer: fibrinogen

What component of blood adheres to damaged tissue to seal minor breaks?

What component of blood adheres to damaged tissue to seal minor breaks?

Answer: platelets

What component of blood are bits of membrane-wrapped cytoplasm pinched off from larger cells in bone marrow?

What component of blood are bits of membrane-wrapped cytoplasm pinched off from larger cells in bone marrow?

Answer: platelets

What is the smallest blood cell type?

What is the smallest blood cell type?

Answer: red blood cells

What blood cells help fight infection?

What blood cells help fight infection?

Answer: white blood cells

What hormone do the kidneys produce that boosts red blood cell production?

What hormone do the kidneys produce that boosts red blood cell production?

Answer: EPO (erythropoetin)

What condition is caused by abnormally low amounts of hemoglobin or red blood cells?

What condition is caused by abnormally low amounts of hemoglobin or red blood cells?

Answer: anemia

Red blood cells are shaped like discs, giving themselves more __________ for better gas exchange.

Red blood cells are shaped like discs, giving themselves more __________ for better gas exchange.

Answer: surface area

What is the iron-containing protein that transports oxygen?

What is the iron-containing protein that transports oxygen?

Answer: hemoglobin

What is most numerous blood cell type?

What is most numerous blood cell type?

Answer: red blood cell

What blood cell contains hemoglobin that transports oxygen?

What blood cell contains hemoglobin that transports oxygen?

Answer: red blood cell

45% of plasma consists of what 3 things?

45% of plasma consists of what 3 things?

Answer: red blood cells, white blood cells, platelets

About 90% of plasma is ______.

About 90% of plasma is ______.

Answer: water

About __% of blood is plasma.

About __% of blood is plasma.

Answer: 55

What is the yellowish liquid in blood called?

What is the yellowish liquid in blood called?

Answer: plasma

How many liters of blood do humans have?

How many liters of blood do humans have?

Answer: 5

What condition occurs when veins stretch and enlarge leaving the veins weakened and swollen, and causing cramps and blood clots?

What condition occurs when veins stretch and enlarge leaving the veins weakened and swollen, and causing cramps and blood clots?

Answer: varicose veins

What controls blood flow into capillary beds?

What controls blood flow into capillary beds?

Answer: muscles

What condition is characterized by persistent systolic blood pressure higher than 140 and/or diastolic blood pressure higher than 90. AKA "silent killer."

What condition is characterized by persistent systolic blood pressure higher than 140 and/or diastolic blood pressure higher than 90. AKA "silent killer."

Answer: hypertension

What is normal blood pressure?

What is normal blood pressure?

Answer: 120/80

What is the rhythmic stretching of the arteries called?

What is the rhythmic stretching of the arteries called?

Answer: pulse

What is the force that blood exerts against the walls of blood vessels?

What is the force that blood exerts against the walls of blood vessels?

Answer: blood pressure

_____ have 2 additional thick layers of connective tissue that allow them to stretch and recoil.

_____ have 2 additional thick layers of connective tissue that allow them to stretch and recoil.

Answer: arteries

All blood vessels are lined with ______________.

All blood vessels are lined with ______________.

Answer: epithelial cells

What device uses electrodes placed on the skin to record electrical currents produced by the pacemaker?

What device uses electrodes placed on the skin to record electrical currents produced by the pacemaker?

Answer: EKG

What part of the heart generates electrical impulses that cause the ventricles to contract?

What part of the heart generates electrical impulses that cause the ventricles to contract? (it's located between the right atrium and the right ventricle)

Answer: AV node (atrioventricular node)

What part of the heart helps all muscle cells beat in unison? (it's located in the right atrium)

What part of the heart helps all muscle cells beat in unison? (it's located in the right atrium)

Answer: pacemaker (SA node)

What heart condition occurs when blood squirts backward as a result of one or more defective valves?

What heart condition occurs when blood squirts backward as a result of one or more defective valves?

Answer: heart murmur

______ is measured during the contraction phase.

______ is measured during the contraction phase.

Answer: systole

_____ is measured during the relaxation phase of the heart cycle.

_____ is measured during the relaxation phase of the heart cycle.

Answer: diastole

Your ________ is a measure of the number of beats per minute.

Your ________ is a measure of the number of beats per minute.

Answer: heart rate

When muscles of the heart relax and contract rhythmically (1 heart beat) that is known as a __________.

When muscles of the heart relax and contract rhythmically (1 heart beat) that is known as a __________.

Answer: cardiac cycle

The ________ prevent oxygen rich and oxygen poor blood from mixing.

The ________ prevent oxygen rich and oxygen poor blood from mixing.

Answer: chambers

______ prevent backflow, and pump blood into the correct direction.

______ prevent backflow, and pump blood into the correct direction.

Answer: valves

The _______ ventricle pumps oxygen-rich blood out to body through arteries.

The _______ ventricle pumps oxygen-rich blood out to body through arteries.

Answer: left

The _______ atrium receives oxygen-rich blood from the lungs.

The _______ atrium receives oxygen-rich blood from the lungs.

Answer: left

The _____ ventricle pumps oxygen-poor blood to the lungs.

The _____ ventricle pumps oxygen-poor blood to the lungs.

Answer: right

The _____ atrium receives oxygen-poor blood from the two large veins.

The _____ atrium receives oxygen-poor blood from the two large veins.

Answer: right

What chambers in the heart pump blood out of the heart to other body organs?

What chambers in the heart pump blood out of the heart to other body organs?

Answer: ventricles

What chambers in the heart collect blood returning to the heart and pump it into the ventricles?

What chambers in the heart collect blood returning to the heart and pump it into the ventricles?

Answer: atria

What muscular organ pumps blood received from veins into the arteries, maintaining a circulatory flow?

What muscular organ pumps blood received from veins into the arteries, maintaining a circulatory flow?

Answer: heart

What is the largest blood vessel in the body?

What is the largest blood vessel in the body?

Answer: aorta

What blood vessels return blood back to the heart?

What blood vessels return blood back to the heart?

Answer: veins

What blood vessels collect blood from capillaries and converge to form veins?

What blood vessels collect blood from capillaries and converge to form veins?

Answer: venules