ESS 345: CHAPTER 7 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
Blood
connective tissue composed of formed elements and plasma
Interstitial Fluid
fluid that bathes body cells
Route of O2 and nutrients
Diffuse from blood cells into interstitial fluid then into body cells
Ho is waste eliminated from body?
blood
What is blood made up of?
55-60% plasma
40-45% Formed elements (cells)
Hematocrit
percentage of blood volume occupied by red blood cells
>99% RBC
<1% WBC and platelets
Plasma
responsible for transport and distribution of elements, nutrients, hormones
,Red Blood Cells
erythrocytes, responsible for O2 transport
hemoglobin (O2 carrying protein)
Know how to draw heart
!!!!!!!
Cardiac Ouput
Amount of blood pumped by each ventricle per minute
L/min
Cardiac output represents blood flow for
Entire CV system
How many liters does the heart pump of blood
5 L/min
Maximum exertion of liters pumped per minute
25-30 L/MIN
stroke volume x heart rate
cardiac output
Higher cardiac output =
higher capacity to do more work
Where is the blood amount measured
, Left ventricle
Cardiac Output equation
Q (L/min)= HR (bpm) x SR (mL/beat)
BPM= 120 bpm
SV=90 ml/beat
Q=10, = 10.8 L/min
Linear relationship between work and
Cardiac ouput
Max cardiac ouput
plateaus
How to measure stroke volume
ECHO
Can be assumed that stroke volume improves when
Hr is lower for same work
Is all blood pumped out of the heart
no
can SV be superficially measured
no
What would have to change in left ventricle to increase stroke volume
WITH COMPLETE SOLUTIONS VERIFIED
Blood
connective tissue composed of formed elements and plasma
Interstitial Fluid
fluid that bathes body cells
Route of O2 and nutrients
Diffuse from blood cells into interstitial fluid then into body cells
Ho is waste eliminated from body?
blood
What is blood made up of?
55-60% plasma
40-45% Formed elements (cells)
Hematocrit
percentage of blood volume occupied by red blood cells
>99% RBC
<1% WBC and platelets
Plasma
responsible for transport and distribution of elements, nutrients, hormones
,Red Blood Cells
erythrocytes, responsible for O2 transport
hemoglobin (O2 carrying protein)
Know how to draw heart
!!!!!!!
Cardiac Ouput
Amount of blood pumped by each ventricle per minute
L/min
Cardiac output represents blood flow for
Entire CV system
How many liters does the heart pump of blood
5 L/min
Maximum exertion of liters pumped per minute
25-30 L/MIN
stroke volume x heart rate
cardiac output
Higher cardiac output =
higher capacity to do more work
Where is the blood amount measured
, Left ventricle
Cardiac Output equation
Q (L/min)= HR (bpm) x SR (mL/beat)
BPM= 120 bpm
SV=90 ml/beat
Q=10, = 10.8 L/min
Linear relationship between work and
Cardiac ouput
Max cardiac ouput
plateaus
How to measure stroke volume
ECHO
Can be assumed that stroke volume improves when
Hr is lower for same work
Is all blood pumped out of the heart
no
can SV be superficially measured
no
What would have to change in left ventricle to increase stroke volume
