Where is the heart located?

• Center of chest

• Left leg

• Right arm

• Back of the head

The heart is located under the ______ and between the lungs.

• sternum

• clavicle

• rib

• scapula

Tags

NGSS.HS-LS1-2

The heart is about the size of your _____

• fist

• foot

• head

• knee

What is the average number of heart beats per minute?

• 72

• 50

• 90

• 120

What is the total output of the heart per minute?

• 5 liters per minute

• 2 liters per minute

• 10 liters per minute

• 1 liter per minute

How much does the heart weigh?

• 10.6 oz or 300 grams

• 2 lbs or 900 grams

• 1 oz or 28 grams

• 5 lbs or 2000 grams

The inner layer of the heart that lines the chambers and valves, and contains the Purkinje fibers, is called the ________.

• Endocardium

• Myocardium

• Epicardium

• Pericardium

The middle, thickest muscular layer of the heart, responsible for heart contraction, is called the ________.

• Myocardium

• Endocardium

• Pericardium

• Epicardium

The outside, thin layer of the heart that contains the coronary arteries is called the ________.

• Epicardium

• Endocardium

• Myocardium

• Pericardium

The double-layer sac that encloses the heart is called the ________.

• Pericardium

• Myocardium

• Endocardium

• Epicardium