Cardiac venous return, values and control

Select all the below that help with venous return.

• Gravity

• The digestive system

• Valves

• Skeletal muscle contractions

• Hair follicles

What is a normal value at rest for cardiac output

• 5L/min

• 5L

• 0.5ml

• 5ml/min

What is a normal value for heart rate?

• 60-100bpm

• 140bpm

• 60-100

• 30bpm

What word defines the volume of blood leaving the ventricle per heart beat?

• Stroke volume

• Cardiac output

• Tidal volume

• Stroke output

What is a normal stroke volume during exercise?

• 70-100ml/beat

• 5L

• 120ml/beat

• 0.5ml/beat

What happens to cardiac output during exercise?

• It reduces

• It increases to 35L

• It increases to 5L

• It reduces to 5L

When heart rate is controlled chemoreceptors, what is detected in the blood?

• CO2

• Pressure

• Heart Rate

• Muscle action

Sympathetic nervous system has what effect on heart rate?

• Increases

• Decreases

• Stays the same