Explain how the heart acts as a pump to ensure proper circulation of blood. What mechanisms prevent backflow?
Describe the function of intercalated discs in cardiac muscle cells and how they contribute to heart function.
Compare and contrast the symptoms and pathophysiology of hypertrophic cardiomyopathy in cats and dilated cardiomyopathy in dogs.
How do the atrioventricular and semilunar valves function differently during the cardiac cycle?
What role does calcium play in cardiac muscle contraction, and how is it regulated during the contraction-relaxation cycle?
Explain the functional significance of the thicker myocardium in the left ventricle compared to the right ventricle.
Describe the pathway of blood from the right atrium to the aorta. Include the valves and chambers involved.
What role does the blood-brain barrier (BBB) play in cerebral circulation, and why is it essential for brain health?
Compare the functions of arteries, veins, and capillaries in maintaining circulatory health. What structural differences help them perform their roles?
How does coronary circulation differ from systemic and pulmonary circulation, and what are the consequences of its impairment?
Describe the three main mechanisms of capillary exchange and provide examples of substances that utilize each method.
Explain the role of hydrostatic and osmotic pressures in the regulation of fluid movement across capillary walls. How do these pressures change from the arterial to venous ends of the capillary bed?
Compare and contrast the different types of capillaries (continuous, fenestrated, and sinusoidal) in terms of permeability and location. Why is this important for the organs they serve?
What are the primary causes of edema, and how do they disrupt the normal balance of fluid between blood and interstitial spaces? Provide examples from veterinary medicine.
How does the lymphatic system contribute to maintaining fluid balance in tissues, and what are the consequences if the system fails (e.g., lymphatic obstruction)?
Explain how hydrostatic and osmotic pressure work together to regulate fluid movement in capillaries. Provide an example of what happens when one of these pressures is disrupted.
Describe the myogenic response and its significance in protecting tissues during fluctuations in blood pressure. How does this response differ between pulmonary and systemic circulation?
Discuss the role of baroreceptors and chemoreceptors in regulating blood pressure. How do they interact with the cardiovascular center in the brain?
What physiological changes occur in the cardiovascular system during exercise? How does regular training influence heart rate and stroke volume?
Describe the renin-angiotensin-aldosterone system and its importance in regulating blood pressure. What would happen if the system were overactive?