1 Exampromax - Stuvia US 2025/2026
BIOL 2313 EXAM 2 Questions and Answers
(100% Correct Answers) Already Graded A+
The P-wave of a normal EKG indicates
Ans: atrial depolarization
Blood within the pulmonary veins returns to the
Ans: left atrium
During the cardiac cycle the bicuspid valve closes
Ans: When the ventricle is in a systole
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Exampromax - Stuvia US
Select the correct statement about the heart valves
Ans: The AV valves are supported by chordae tendinae so that they do not blow
back up into the atria during the ventricular contraction
Select the correct statement about Cardiac output
Ans: A slow heart rate increases end diastolic volume, stroke volume, and force
of contraction.
The pericardial cavity
Ans: Contains a lubricating fluid called pericardial fluid
Isovolumetric contraction
Ans: Refers to the short period during ventricular systole when the ventricles are
completely closed chambers and refers to the short period during ventricular
systole when the pressure in the ventricular increase drastically
Epinephrine is a
Ans: Negative inotropic agent
If the vagal nerves to the heart were cut the result would be
Ans: The heart rate would increase by about 25 bpm
, 2 Exampromax - Stuvia US 2025/2026
Which of the following are involved in pulmonary circulation
Ans: Right ventricle, pulmonary artery, and left atrium
If the length of the absolute refractory period in the cardiac muscle cells
was the same as it is for skeletal muscle cells
Ans: Tetanic contractions might occur which would stop the hearts pumping
action
Compared to skeletal muscle, cardiac muscle
Ans: Has gap junctions that allow it to act as a functional syncytium
As Karla worked at her dissection, she became frustrated that several of the
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structures she had to learn about had more than one name. Provide another
name for the atrioventricular bundle
Exampromax - Stuvia US
Ans: Bundle of his
The pressure that must be overcome for the ventricles to eject blood is
called
Ans: Afterload
_____________ venous return, such as might results from
exercise_____________ EDV and SV
Ans: High, increase
Electrical signals move through the heart in a particular order which order
is that?
Ans: SA node, internadal pathway, AV node, bundle of His, Purkinje fibers
The longer the blood vessel the greater the resistance
Ans: True
The elastic nature of the aorta helps to maintain stable blood pressure
during ventricle diastole
Ans: True
BIOL 2313 EXAM 2 Questions and Answers
(100% Correct Answers) Already Graded A+
The P-wave of a normal EKG indicates
Ans: atrial depolarization
Blood within the pulmonary veins returns to the
Ans: left atrium
During the cardiac cycle the bicuspid valve closes
Ans: When the ventricle is in a systole
© 2025 Assignment Expert
Exampromax - Stuvia US
Select the correct statement about the heart valves
Ans: The AV valves are supported by chordae tendinae so that they do not blow
back up into the atria during the ventricular contraction
Select the correct statement about Cardiac output
Ans: A slow heart rate increases end diastolic volume, stroke volume, and force
of contraction.
The pericardial cavity
Ans: Contains a lubricating fluid called pericardial fluid
Isovolumetric contraction
Ans: Refers to the short period during ventricular systole when the ventricles are
completely closed chambers and refers to the short period during ventricular
systole when the pressure in the ventricular increase drastically
Epinephrine is a
Ans: Negative inotropic agent
If the vagal nerves to the heart were cut the result would be
Ans: The heart rate would increase by about 25 bpm
, 2 Exampromax - Stuvia US 2025/2026
Which of the following are involved in pulmonary circulation
Ans: Right ventricle, pulmonary artery, and left atrium
If the length of the absolute refractory period in the cardiac muscle cells
was the same as it is for skeletal muscle cells
Ans: Tetanic contractions might occur which would stop the hearts pumping
action
Compared to skeletal muscle, cardiac muscle
Ans: Has gap junctions that allow it to act as a functional syncytium
As Karla worked at her dissection, she became frustrated that several of the
© 2025 Assignment Expert
structures she had to learn about had more than one name. Provide another
name for the atrioventricular bundle
Exampromax - Stuvia US
Ans: Bundle of his
The pressure that must be overcome for the ventricles to eject blood is
called
Ans: Afterload
_____________ venous return, such as might results from
exercise_____________ EDV and SV
Ans: High, increase
Electrical signals move through the heart in a particular order which order
is that?
Ans: SA node, internadal pathway, AV node, bundle of His, Purkinje fibers
The longer the blood vessel the greater the resistance
Ans: True
The elastic nature of the aorta helps to maintain stable blood pressure
during ventricle diastole
Ans: True
