Lecture 2 Basic structure and function

Question 1

What is the primary function of the heart?

Answer 1

to convert chemical energy into hydraulic energy in order to maintain a physiological circulation

Question 2

What will the CVS do to preserve function

Answer 2

act to change structure

Question 3

What do capillaries do?

Answer 3

exchange metabolites

Question 4

What does the CVS consist of?

Answer 4

Pump, Pipes, Regulatory system (neuronal, hormonal, sensors, effectors, instrinsic electrical)
Medium transported

Question 5

What happens in a healthy heart?

Answer 5

Generates a unidirectional flow of blood as a result of its structure and chambers and valves

Question 6

Holes in the heart?

Answer 6

Atrial septal defect and ventricular septal defect

Question 7

Sticky valves

Answer 7

Aortic valve stenosis

Question 8

What methods do you use to assess structure?

Answer 8

Imaging:

Naked eye, ultrasound, MRI, Radionuclide scintigraphy, x-rays

Question 9

What methods do you use to assess function?

Answer 9

Pressure, flow, volume, energy?heat, effects on symptoms and exercise capacity

Question 10

Ultrasound of heart?

Answer 10

echocardiogram

Question 11

Which is the most thick walled part of the heart?

Answer 11

Left Ventricle

Is the pump that fails the most often resulting in heart failure and death

Question 12

Blood diverted to rapidly metabolizing tissues via?

Answer 12

vasodilation