BIO 102 Blood Vessels

Which blood vessel type is stronger and why?

Arteries are stronger than veins, because arteries need to be able to handle the ventricles' systolic pressure. Veins do not need to be as strong, because veins undergo less pressure and blood slows down before reaching the veins.

Which blood vessel is tough yet elastic and why?

Arteries are tough yet elastic. Arteries are tough so arteries can handle the pressure of the ventricles' systole/contractions, but arteries are elastic so arteries can expand when receiving blood.

What do arteries ALWAYS do?

Arteries carry blood out of the heart.

What do arteries do?

Arteries carry oxygenated blood away from the heart.

What is the exception for the arteries in terms of carrying oxygenated blood?

Arteries carry oxygenated blood, except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs.

Describe how arteries contract.

Arteries expand as a pressure wave, but arteries prevent over expansion because arteries contract after expansion.

Which blood vessel type has more smooth muscle: veins or arteries?

Arteries have more smooth muscle than veins.

Fill in the blanks: At _________ capillary beds, deoxygenated blood oxygenates and veins become arteries, while at ___________ capillary beds, oxygenated blood deoxygenates and arteries become veins.

At PULMONARY CAPILLARY BEDS, deoxygenated blood oxygenates and veins become arteries, while at SYSTEMIC CAPILLARY BEDS, oxygenated blood deoxygenates and arteries become veins.

Fill in the blank: In terms of color, veins are ______, while arteries are ______.

In terms of color, veins are BLUE, while arteries are RED.

Fill in the blanks: __________ capillary beds dump CO2 and pick up oxygen, while _________ beds dump oxygen and pick up CO2

PULMONARY CAPILLARY BEDS dump CO2 and pick up oxygen, while SYSTEMIC CAPILLARY BEDS dump oxygen and pick up CO2.

How do the arteries assist the ventricles?

The arteries help the ventricle work less hard because the arteries do some of the work, carrying blood throughout the body.

What does the brain's regulation of the the arteries' vasoconstriction and vasodilation do?

The brain's regulation of the arteries' vasoconstriction and vasodilation helps to control blood pressure.

What is the exception for veins in terms of carrying deoxygenated blood?

The exception for veins in terms of carrying deoxygenated blood is the pulmonary vein, which carries oxygenated blood away from the lungs to the heart.

Where are the pulmonary capillary beds in the lungs located?

The lungs' pulmonary capillary beds are located in the alveoli.

What are the two types of capillary beds?

The two types of capillary beds are the pulmonary capillary beds in the lungs/respiratory tissue and the systemic capillary beds in the body tissues

What unique feature of veins prevent blood from falling back down the veins back to the capillary beds under the force of gravity?

The veins' valves prevent blood from falling back down the veins back to the capillary beds under the force of gravity.

Fill in the blanks: ________ blood is deoxygenated, CO2 rich and oxygen poor. _________ blood is oxygenated, oxygen rich and CO2 poor.

VEINOUS BLOOD is deoxygenated, VEINOUS BLOOD is CO2 rich and oxygen poor. ARTERIAL BLOOD is oxygenated, oxygen rich and CO2 poor.

What do veins ALWAYS do?

Veins always carry blood to the heart.

Where do veins and arteries meet?

Veins and arteries meet at the capillary beds.

What do veins do?

Veins carry deoxygenated blood filled with CO2 back to the heart.