EEOB 2520 Exam 11 Test Questions
with Complete Solutions.
What is blood pressure caused by? - Answer space contraction by heart chambers
What type of relationship does pressure and volume have? - Answer inverse
What are the two phases of a cycle of the heart? - Answer systole and diastole
What is systole? - Answer contraction to empty the heart
What is diastole? - Answer relaxation to fill the heart
Which happens more: systole or diastole? - Answer Diastole
What is stroke volume? - Answer EDV- ESV
What is EDV? - Answer End Diastolic Volume; pre-contraction volume
How much was in before the contraction
What is ESV? - Answer End Systolic Volume; post-contraction volume
How much is left after the contraction
What is the maximum volume of EDV? - Answer 135 mL
What is the minimum volume of ESV? - Answer 65 mL
What is the heart rate (HR)? - Answer cycles per min
What is the cardiac output (CO)? - Answer HR x SV; about 4.9 L per min
What can you change to regulate the CO? - Answer SV, HR, or EDV and ESV
How can you regulate the HR with the sympathetic NS? - Answer Inc. input to SA node
Inc. conduction speed (membrane potential)
, How can you regulate the HR with the parasympathetic NS? - Answer The exact opposite of
what you do for the sympathetic NS
What are the other ways to regulate the HR? - Answer epinephrine, body temp, electrolytes
(charged ions), endocrines
What does epinephrine do to the HR? - Answer increase it
How do you regulate the stroke volume (SV)? - Answer inc. EDV
change arterial pressure
sympathetic NS
What happens when you increase the EDV? - Answer inc. contraction force when volume
stretches the muscle
What happens in congestive heart failure? - Answer actin and myosin separated due to too
much stretch of the sarcomeres
What happens when you change the arterial pressure? - Answer ventricles eject into arteries
creates a pressure gradient and resistance to that movement
What are all types of blood vessels lined with? - Answer endothelial cells
Which way do arteries carry blood? - Answer away from the heart
Which way do veins carry blood? - Answer to the heart
When are arteries dilated? - Answer When blood is flowing
Characteristics of arteries are: - Answer highly elastic
smooth muscle
highest hydrostatic pressure
What happens when you have high hydrostatic pressure? - Answer causes artery to expand
when pressure at heart is bigger
with Complete Solutions.
What is blood pressure caused by? - Answer space contraction by heart chambers
What type of relationship does pressure and volume have? - Answer inverse
What are the two phases of a cycle of the heart? - Answer systole and diastole
What is systole? - Answer contraction to empty the heart
What is diastole? - Answer relaxation to fill the heart
Which happens more: systole or diastole? - Answer Diastole
What is stroke volume? - Answer EDV- ESV
What is EDV? - Answer End Diastolic Volume; pre-contraction volume
How much was in before the contraction
What is ESV? - Answer End Systolic Volume; post-contraction volume
How much is left after the contraction
What is the maximum volume of EDV? - Answer 135 mL
What is the minimum volume of ESV? - Answer 65 mL
What is the heart rate (HR)? - Answer cycles per min
What is the cardiac output (CO)? - Answer HR x SV; about 4.9 L per min
What can you change to regulate the CO? - Answer SV, HR, or EDV and ESV
How can you regulate the HR with the sympathetic NS? - Answer Inc. input to SA node
Inc. conduction speed (membrane potential)
, How can you regulate the HR with the parasympathetic NS? - Answer The exact opposite of
what you do for the sympathetic NS
What are the other ways to regulate the HR? - Answer epinephrine, body temp, electrolytes
(charged ions), endocrines
What does epinephrine do to the HR? - Answer increase it
How do you regulate the stroke volume (SV)? - Answer inc. EDV
change arterial pressure
sympathetic NS
What happens when you increase the EDV? - Answer inc. contraction force when volume
stretches the muscle
What happens in congestive heart failure? - Answer actin and myosin separated due to too
much stretch of the sarcomeres
What happens when you change the arterial pressure? - Answer ventricles eject into arteries
creates a pressure gradient and resistance to that movement
What are all types of blood vessels lined with? - Answer endothelial cells
Which way do arteries carry blood? - Answer away from the heart
Which way do veins carry blood? - Answer to the heart
When are arteries dilated? - Answer When blood is flowing
Characteristics of arteries are: - Answer highly elastic
smooth muscle
highest hydrostatic pressure
What happens when you have high hydrostatic pressure? - Answer causes artery to expand
when pressure at heart is bigger
