The Heart 1

Which side of the heart receives blood from the body and pumps blood through the pulmonary circulation?

• left

• right

Which side of the heart receives blood from the lungs and pumps blood through the systemic circulation?

• left

• right

The _____ circulation carries blood to the lungs and returns it to the left side of the heart

• pulmonary

• systemic

In the lungs, _____ diffuses from the blood into the lungs and _____ diffuses from the lungs into the blood

• carbon dioxide; oxygen

• oxygen; carbon dioxide

Contractions of the heart generate _____, which is responsible for moving blood through the blood vessels

• blood pressure

• blood mass

• blood acceleration

• blood force

The valves of the heart ensure ____ through the heart and blood vessels

• three-way blood flow

• two-way blood flow

• one-way blood flow

• four-way blood flow

The _____ of heart contractions change to meet the metabolic needs of the tissues (which vary depending on conditions such as rest, exercise, and change in body position)

• acceleration and mass

• pressure and mass

• rate and pressure

• rate and force

The adult heart is shaped like a _____

• blunt cone

• sharp egg

• valentine

• rhombus

The adult heart is approximately the size of ____

• your head

• your eyeball

• your closed fist

• your open mouth

The adult heart has slightly more mass in an average _____ than in an average _____

• female; male

• male; female