ESS345 EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS RATED A++
What are the 6 cardiovascular system functions?
1. delivers O2 and nutrients (glucose, ffa's)
2. removes CO2 and other waste (lactic acid, p1, heat)
3. Transports hormones
4. supports temperature balance/fluid regulation
5. maintains acid-base balance
6. regulate immune function
3 major Circulatory elements of the Cardiovascular system?
1. Pump (heart)
2. Channels or Tubes (blood vessels)
3. Fluid Medium (blood)
What is the pathway of blood through the heart?
vena cava, right atrium, tricuspid valve, right ventricle, pulmonary artery, pulmonary
vein, left atrium, mitral valve, left ventricle, aorta
Differences between pulmonary and systemic circulation
Pulmonary Circulation: deoxygenated blood to the lungs, low pressure
Systemic Circulation: oxygenated blood to body, high pressure
What does the vena cava do?
Brings deoxygenated blood from the body to the heart
, Aorta function?
oxygenated blood leaves left ventricle toward body, main artery
Chordae tendinae function
keep the valve in place so blood can go back in the wrong direction
Intraventricular septum properties with aerobic exercise
left ventricle size will increase, and there will be more muscular walls.
Properties of the left ventricle involving the myocardium?
The LV has the most myocardium. Pumps blood to the entire body, has the thickest
walls that can adapt the most: weightlifting can increase wall size
What is myocardium?
cardiac muscle
Properties of cardiac muscle cells? (cardiomyocytes)
Connected by intercalated discs, only 1 fiber type, high capillary density, high number of
mitochondria, striations
Function of intercalated discs in cardiac muscle?
HOLDS CELLS IN AN ORGANIZED STRUCTURE, gap junctions conduct action
potentials.
**synchronized contractions important for cardiac muscle, allows proper blood flow.
Cardiac vs. Skeletal Muscles?
Cardiac(myocardial):
- small, short
- one nucleus
- continuous, involuntary contractions
COMPLETE SOLUTIONS RATED A++
What are the 6 cardiovascular system functions?
1. delivers O2 and nutrients (glucose, ffa's)
2. removes CO2 and other waste (lactic acid, p1, heat)
3. Transports hormones
4. supports temperature balance/fluid regulation
5. maintains acid-base balance
6. regulate immune function
3 major Circulatory elements of the Cardiovascular system?
1. Pump (heart)
2. Channels or Tubes (blood vessels)
3. Fluid Medium (blood)
What is the pathway of blood through the heart?
vena cava, right atrium, tricuspid valve, right ventricle, pulmonary artery, pulmonary
vein, left atrium, mitral valve, left ventricle, aorta
Differences between pulmonary and systemic circulation
Pulmonary Circulation: deoxygenated blood to the lungs, low pressure
Systemic Circulation: oxygenated blood to body, high pressure
What does the vena cava do?
Brings deoxygenated blood from the body to the heart
, Aorta function?
oxygenated blood leaves left ventricle toward body, main artery
Chordae tendinae function
keep the valve in place so blood can go back in the wrong direction
Intraventricular septum properties with aerobic exercise
left ventricle size will increase, and there will be more muscular walls.
Properties of the left ventricle involving the myocardium?
The LV has the most myocardium. Pumps blood to the entire body, has the thickest
walls that can adapt the most: weightlifting can increase wall size
What is myocardium?
cardiac muscle
Properties of cardiac muscle cells? (cardiomyocytes)
Connected by intercalated discs, only 1 fiber type, high capillary density, high number of
mitochondria, striations
Function of intercalated discs in cardiac muscle?
HOLDS CELLS IN AN ORGANIZED STRUCTURE, gap junctions conduct action
potentials.
**synchronized contractions important for cardiac muscle, allows proper blood flow.
Cardiac vs. Skeletal Muscles?
Cardiac(myocardial):
- small, short
- one nucleus
- continuous, involuntary contractions
