Microscopic Anatomy of Cardi. 10. Describe the structure of the intercalated discs. What role does this structure play in the function of cardiac muscle?

D. Sheep Heart Dissection 1. Indicate the number of cusps composing the heart valves. Mitral Tricuspid 2. Compare the thickness of the valve cusps. Atrioventricular valves Semilunar valves 3. Which ventricle has the thicker wall? 4. Are the tendinous cords fragile or strong? Describe their function. The right valve has three cusps and the left valve has two cusps 292 Aortic Pulmonary. The left ventricle has the thickest wall They are strong They prevent cusps from being pushed too far into the atria by increased ventricular pressure. 5. Is the ventricular septum a thin sheet of connective tissue or a thick muscular wall? The ventricular septum in the sheep heart has a thick muscular wall Laboratory Report 19

4.4. R = R₁ + AR Ro Arterial Compliance: An artery of 1 cm diameter under diastolic pressure increases in diameter by 5% during systole. What is the artery's compliance if BP = 140/90 mmHg? (Use the definition of compliance given in class.)

Which of the following are parts of cardiac muscle O Dense bodies and sarcolemma OZ discs, triads, intercalated discs O Dense bodies, T-tubules, actin and myosin O Sarcolemma, calcium channels, intercalated discs

LT-VA16:Life-size Muscle Torso 27-part 3B Scientific The highlighted vessel becomes what vessel on it's way back to the heart?