Bio 202
Study guide for Lecture Exam II Bio 202 (Heart, BV’s and Respiratory system)
1. The pulmonary circuit is supplied by which ‘side” of the heart? The systemic circuit? The right atrium
2. What is the functional difference between desmosomes and gap junctions? Desmosomes prevent adjacent cells from separating during contraction and gap junctions allow ions to pass from cell to cell transmitting current across the entire heart
3. What are the different effects of the PNS and SNS on heart rate? Parasympathetic slows heart rate SNS increases heart rate
4. Atrial hypertrophy would probably have what effect on an electrocardiogram? *spike the p wave
5. What is the function of the papilary muscles? i.e. what do they prevent? pappilary muscle is necessary for the integrity of mitral and tricuspid valve apparatus.they help in the closure and opening of the above said valves during myocardial contractility.any dysfunction of these muscles lead to regurgitation of the coresponding valves and poor myocardial performance ultimately may end up in heart failure. Prevent backflow.
6. The ventricles are almost empty at the end of what phase of the cardiac cycle? Isovolumetric relaxation
7. Blood flow through a capillary bed is regulated by what? Vasodialation and constriction
8. Generalized vasomotion can raise or lower what important homeostatic variable throughout the body? Blood pressure
9. What capillary factors can lead to edema?
10. The maximum amount of air the lungs can contain is known as what? Inspiratory capacity
11. The rate of oxygen diffusion is affected by what pressure gradient? Its own pressure gradient.
12. Gas transport is the process of carrying gasses from where to where? Aveoli to systemic tissue
13. Carbon monoxide competes with what structure for the same binding site on Hb. oxygen
14. Which major blood vessels carry oxygen-poor blood? Veins?superior vena cava*
Study guide for exam II Allison Hays Ph.D. Spring 2012 Anatomy &
1. The pulmonary circuit is supplied by which ‘side” of the heart? The systemic circuit? The right atrium
2. What is the functional difference between desmosomes and gap junctions? Desmosomes prevent adjacent cells from separating during contraction and gap junctions allow ions to pass from cell to cell transmitting current across the entire heart
3. What are the different effects of the PNS and SNS on heart rate? Parasympathetic slows heart rate SNS increases heart rate
4. Atrial hypertrophy would probably have what effect on an electrocardiogram? *spike the p wave
5. What is the function of the papilary muscles? i.e. what do they prevent? pappilary muscle is necessary for the integrity of mitral and tricuspid valve apparatus.they help in the closure and opening of the above said valves during myocardial contractility.any dysfunction of these muscles lead to regurgitation of the coresponding valves and poor myocardial performance ultimately may end up in heart failure. Prevent backflow.
6. The ventricles are almost empty at the end of what phase of the cardiac cycle? Isovolumetric relaxation
7. Blood flow through a capillary bed is regulated by what? Vasodialation and constriction
8. Generalized vasomotion can raise or lower what important homeostatic variable throughout the body? Blood pressure
9. What capillary factors can lead to edema?
10. The maximum amount of air the lungs can contain is known as what? Inspiratory capacity
11. The rate of oxygen diffusion is affected by what pressure gradient? Its own pressure gradient.
12. Gas transport is the process of carrying gasses from where to where? Aveoli to systemic tissue
13. Carbon monoxide competes with what structure for the same binding site on Hb. oxygen
14. Which major blood vessels carry oxygen-poor blood? Veins?superior vena cava*
Study guide for exam II Allison Hays Ph.D. Spring 2012 Anatomy &