Download Circle the term that does not belong in each of the following

BIO 104
Heart homework
revised s08
NAME ___________________________________________Use this sheet for answers
WRITE NEATLY
1. Fill-in in the spaces provided
The heart is cone-shaped and located within the (1) cavity. The apex
(1) ____________________
of the heart rests on the (2). The (3, 4, 5) vessels empty blood into the
(2) ____________________
right atrium. The pulmonary trunk and pulmonary arteries carry
(3) ____________________
blood to the (6). The four pulmonary veins empty into the (7) chamber.
(4) ____________________
The (8) chambers can be thought of as receiving chambers and
(5) ____________________
the (9) as sending chambers. The branches off the ascending aorta which
(6) ____________________
supply the muscles of the heart are the (10) arteries. The (11) trunk is the first
(7) ____________________
branch off the arch of the aorta. The function of the pericardial fluid
(8) ____________________
is to decrease (12) during heart activity. The myocardium of the heart
(9) ____________________
is composed of (13) tissue.
(10) ____________________
(11) ____________________(12) ____________________ (13) ____________________
2. Fill in the spaces provided.
Contraction of ventricles is called (1) and relaxation called (2).
(1)____________________
The first heart sound (lub) occurs due to closure of the (3) valves
(2) ____________________
and the closure of the (4) valves is the second sound (dup).
(3) ____________________
When the atria contract the (5) valves are open and (6) valves closed.(4) _________________
When the ventricles contract the (7) valves are open and (8) closed. (5) ___________________
Abnormal heart sounds, or (9), may indicate valve problems.
(7) ____________________
(6) ____________________
(8) ____________________ (9) ____________________
3. Fill in blood flow through the heart:
The superior vena cava, __________________, and _____________ carry deoxygenated blood to the
__________ chamber of the heart. Blood then flows through the _________ valve to the _______(chamber).
When this chamber contracts, blood flows through the _______________ valve to the pulmonary _________
(vessel) and pulmonary arteries to the lungs. Blood becomes oxygenated at the lungs. From the lungs, blood
flows through the 4 _________________ (vessels) to the __________________ (chamber). This massive
chamber contracts and sends oxygenated blood through the _________ valve to the aorta and its branches.
4. Where (be specific) are the following structures located?
Tricuspid valve ________________________________________________________________________
Aortic valve
________________________________________________________________________
Left ventricle________________________________________________________________________
Bicuspid valve ________________________________________________________________________
Papillary muscle________________________________________________________________________
Fibrous pericardium __________________________________________________________________
SA node
________________________________________________________________________
Interatrial septum______________________________________________________________________
Coronary sinus________________________________________________________________________
Endocardium ________________________________________________________________________
5. Oxygenated (O) or deoxygenated (D) blood ?
_____ pulmonary arteries
_____ left ventricle
_____ aorta
_____ coronary arteries
_____ cardiac veins
_____pulmonary veins
_____ right side of the heart
_____ superior vena cava
_____ bicuspid valve
Arteries USUALLY carry oxygenated blood. List 1 that is an exception ________________
Veins USUALLY carry deoxygenated blood. List 1 that is an exception ________________
6. Match
__________ heart rate X stroke volume
A. preload
__________ expressed in beats per minute
B. heart rate
__________ ml blood in ventricles after atrial systole
C. systole
__________ expressed in ml/minute
D. cardiac output
__________ contraction pumps blood out of chamber
E. end systolic volume (ESV)
__________ 50 ml blood left in ventricle
F. stroke volume
__________ relaxation of a heart chamber
G. end diastolic volume (EDV)
__________ percent of EDV that is stroke volume
H. ejection fraction
_________ stretching of ventricles during diastole
I. diastole
7. What do the following stand for:
a. CO_________________________________________
b. SV _________________________________________
c. EDV _________________________________________
d. ESV _________________________________________
e. HR _________________________________________
Which 3 of the above are expressed in units of milliliters? ________________________
Which 1 of the above is expressed in units of milliliters per minute? _________________
Which 1 of the above can also be expressed as an ejection fraction? ____________________
Which 1 of the above is expressed in beats per minute? _________________________________________
8. If the normal cardiac output is 5250 ml/min and the stroke volume is lowered to 50 ml/beat, how much of an
increase in heart rate is required to maintain the CO?
9. Which term does not belong in each of the following.
1. AV valves closed
AV valves open
Ventricular systole
Semilunar valves open
2. Bicuspid valve
Mitral valve
Left AV valve
Right AV valve
3. Foramen ovale
Interatrial septum
Interventricular septum
4. Electrical activity of the ventricles
QRS wave
P wave
Fossa ovalis
AV node
5. Right side of heart
Left side of heart
Superior vena cava
Pulmonary trunk
6. Chordae tendinae
Pulmonary valve
Papillary muscles
AV valve
7. Ventricular systole
AV valves open
Blood flow through aorta
SL valves open
10. Starling's Law of the Heart states that the more the muscle cells in the ventricles are stretched, the greater
force of the contraction. How does the rate of venous blood return affect ventricular systole and stroke volume
11. Will the following increase, or decrease, cardiac output?
a. caffeine
e. greater pre-load
b. digitalis
f. exercise
c. parasympathetic impulse
g. greater ESV
d. beta blocker drugs
h. epinephrine
i. decrease in ESV
j. nicotine
k. greater venous return to RA