ch. 14 the heart

This system is a continuous one-way circuit of blood vessels, through which blood is pumped by the heart

• Respiratory system

• Circulatory system

• Digestive system

• Nervous system

Lines the heart’s interior

• Epicardium

• Endocardium

• Myocardium

• Pericardium

Thickest layer, heart muscle

• Endocardium

• Pericardium

• Myocardium

• Epicardium

Thin outermost layer of heart

• Endocardium

• Pericardium

• Epicardium

• Myocardium

Sac that encloses the heart, holds heart in place.

• Epicardium

• Pericardium

• Myocardium

• Endocardium

Formed of two layers: Parietal layer fused to fibrous pericardium. Visceral layer (epicardium) fused to myocardium

• Endocardium

• Pericardium

• Serous pericardium

• Myocardium

Space between serous layer

• Pericardial cavity

• Chest cavity

• Thoracic cavity

• Myocardium

Lightly striated, single nucleus, involuntary, has intercalated disks and branching fibers

• Skeletal muscle tissue

• Fibers

• Muscle cells

• Cardiac muscular tissue

Tags

NGSS.HS-LS1-2

Which side pumps blood low in oxygen to the lungs via pulmonary circuit?

• Left

• Right

Which side pumps oxygen rich blood to remainder of the body via systemic circuit?

• Left

• Right