4/17/26, 10:48 PM Exam 1 Practice Questions
BIOL 242 (Tacoma Community College) RECENT EXAM ACTUAL
COMPLETE REAL EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!2026-2027
What are the internal ridges of myocardium found in the right atrium and
auricle?
Papillary muscles
Chordae tendineae
Trabeculae carneae
Pectinate muscles
pectinate muscles
the left and right ventricles are separated internally by the _______________
___________
interventricular septum
/ 1/43
,4/17/26, 10:48 PM Exam 1 Practice Questions
Which describes the location of the right
atrium? The right atrium is inferior to the left
ventricle.
The right atrium is superior to the right
ventricle. The right atrium is superior to the
left atrium.
The right atrium is superior to the right ventricle.
The thick-walled inferior chambers of the heart that pump blood into the arteries are
called Blank __ _.
Multiple choice question.
ventricles
atria
auricles
vessels
ventricles
tricuspid valve
valve between the right atrium and the right
ventricle AKA atrioventricular valve
Cardiocytes are described as _______ because individual cells can depolarize
on
their own without outside stimulation.
autorhythmic
/ 2/43
,4/17/26, 10:48 PM Exam 1 Practice Questions
short, thick, branched muscle cells of the heart are called _______________
cardiocytes or cardiomyocytes
cardiac muscle requires oxygen and therefore relies on _____ respiration to
produce ATP
aerobic
Which layer of the heart contains the cardiac conduction system?
myocardium
Which term refers to relaxation of the heart?
diastole
What is the ability to rhythmically depolarize without outside stimulation
called?
autorrhythmic
Cardiomyocytes are jointed end to end by thick connections called _.
intercalated discs
Cardiac muscle depends on aerobic respiration to make what?
ATP
/ 3/43
, 4/17/26, 10:48 PM Exam 1 Practice Questions
Choose all the structures that are considered to be part of the cardiac conduction system:
Foramen ovale
Purkinje fibers
Ligamentum arteriosum
Coronary sinus
SA node
AV node
purkinje fibers
SA node
AV node
When the AV node acts as pacemaker, the slower heartbeat has what
type of rhythm?
nodal
The vertebrate heartbeat is said to be ____ because the signal originates within
the heart muscle
itself.
autorhythmic
voluntary
myogenic
myogenic
The pacemaker potential of SA node cells is due to the influx of which ions?
sodium
/ 4/43
BIOL 242 (Tacoma Community College) RECENT EXAM ACTUAL
COMPLETE REAL EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!2026-2027
What are the internal ridges of myocardium found in the right atrium and
auricle?
Papillary muscles
Chordae tendineae
Trabeculae carneae
Pectinate muscles
pectinate muscles
the left and right ventricles are separated internally by the _______________
___________
interventricular septum
/ 1/43
,4/17/26, 10:48 PM Exam 1 Practice Questions
Which describes the location of the right
atrium? The right atrium is inferior to the left
ventricle.
The right atrium is superior to the right
ventricle. The right atrium is superior to the
left atrium.
The right atrium is superior to the right ventricle.
The thick-walled inferior chambers of the heart that pump blood into the arteries are
called Blank __ _.
Multiple choice question.
ventricles
atria
auricles
vessels
ventricles
tricuspid valve
valve between the right atrium and the right
ventricle AKA atrioventricular valve
Cardiocytes are described as _______ because individual cells can depolarize
on
their own without outside stimulation.
autorhythmic
/ 2/43
,4/17/26, 10:48 PM Exam 1 Practice Questions
short, thick, branched muscle cells of the heart are called _______________
cardiocytes or cardiomyocytes
cardiac muscle requires oxygen and therefore relies on _____ respiration to
produce ATP
aerobic
Which layer of the heart contains the cardiac conduction system?
myocardium
Which term refers to relaxation of the heart?
diastole
What is the ability to rhythmically depolarize without outside stimulation
called?
autorrhythmic
Cardiomyocytes are jointed end to end by thick connections called _.
intercalated discs
Cardiac muscle depends on aerobic respiration to make what?
ATP
/ 3/43
, 4/17/26, 10:48 PM Exam 1 Practice Questions
Choose all the structures that are considered to be part of the cardiac conduction system:
Foramen ovale
Purkinje fibers
Ligamentum arteriosum
Coronary sinus
SA node
AV node
purkinje fibers
SA node
AV node
When the AV node acts as pacemaker, the slower heartbeat has what
type of rhythm?
nodal
The vertebrate heartbeat is said to be ____ because the signal originates within
the heart muscle
itself.
autorhythmic
voluntary
myogenic
myogenic
The pacemaker potential of SA node cells is due to the influx of which ions?
sodium
/ 4/43
