HS 350 And the Beat Goes On

What is the primary function of the myocardium in the horse's heart?

• To control blood flow direction

• To provide a protective outer layer

• To pump blood through the heart

• To exchange oxygen and nutrients

Through which vessels does blood return to the heart in the horse's cardiovascular system?

• Arteries

• Arterioles

• Capillaries

• Veins

Which layer of the heart is responsible for its pumping action?

• Epicardium

• Myocardium

• Endocardium

• Pericardium

What is the role of capillaries in the horse's cardiovascular system?

• To pump blood

• To exchange substances with cells

• To carry blood away from the heart

• To protect the heart

What is the function of the pericardium?

• It pumps blood to the lungs.

• It surrounds and protects the heart.

• It measures blood pressure.

• It stimulates heart contractions.

Which part of the heart pumps blood to the lungs?

• Left atrium and left ventricle

• Right atrium and right ventricle

• Superior vena cava

• Inferior vena cava

What is the role of the sinoatrial (SA) node?

• It measures blood pressure.

• It prevents blood from backing up.

• It coordinates contractions of the heart.

• It returns blood from the body.

What is the difference between systole and diastole?

• Systole is relaxation, diastole is contraction.

• Systole is contraction, diastole is relaxation.

• Both are types of blood vessels.

• Both are types of heart valves.

Where is the aortic valve located?

• Between the right atrium and right ventricle

• Between the left atrium and left ventricle

• Between the left ventricle and the aorta

• Between the right ventricle and the pulmonary artery

What does an electrocardiogram (ECG) record?

• Electrical activity of the heart

• Blood pressure levels

• Oxygen levels in the blood

• Muscle contractions