EVOLVE CH 31
.docx
keyboard_arrow_up
School
University of Texas, El Paso *
*We aren’t endorsed by this school
Course
5319
Subject
Biology
Date
Feb 20, 2024
Type
docx
Pages
5
Uploaded by AdmiralGazelleMaster949
1.
1.
1.
ID: 25066824811
Which cardiac chamber has the thickest wall?
A.
Left atrium
B.
Right atrium
C.
Left ventricle
Correct
D.
Right ventricle
Incorrect
The atria are approximately 1–2 mm thick. The right ventricle is 4–5 mm thick, and the left ventricle, the most muscular chamber, is approximately 12–15 mm thick.
Awarded 0.0 points out of 1.0 possible points.
2.
2.
ID: 25066824816
Which statement accurately describes blood flow through the heart?
A.
Blood flows from the left atrium through the tricuspid valve to the left ventricle.
B.
Blood flows from the right atrium through the aortic valve to the right ventricle.
Incorrect
C.
Blood flows from the right ventricle through the pulmonic semilunar valve.
Correct
D.
Blood flows from the left ventricle through the bicuspid valve.
Blood flows from the right atrium through the tricuspid valve to the right ventricle. Blood then travels from the right ventricle through the
pulmonic semilunar valve to the pulmonary circulation. Once in the pulmonary circulation, it is oxygenated and travels to the left atrium through the bicuspid valve to the left ventricle. Blood leaves the left ventricle through the aortic valve and enters the systemic circulation.
Awarded 0.0 points out of 1.0 possible points.
3.
3.
ID: 25066824821
Which statement correctly describes the A wave?
A.
The A wave is generated by atrial contraction.
Correct
B.
The filling of the atrium causes early diastolic peak of the A wave.
C.
The A wave is produced as a result of the descent of the tricuspid valve ring.
D.
The A wave reflects the rapid flow of blood from the great veins and right atrium into right ventricle.
The A wave is generated by atrial contraction. The V wave is the early diastolic peak caused by the filling of the atrium. The X descent
follows the A wave and is produced because of the descent of the tricuspid valve ring. The Y descent follows the V wave and reflects
the rapid flow of blood from the great veins and right atrium into the right ventricle.
Awarded 1.0 points out of 1.0 possible points.
4.
4.
ID: 25066824826
Which artery travels in the coronary sulcus between the left atrium and the left ventricle?
A.
Left anterior descending
Incorrect
B.
Circumflex
Correct
C.
Right coronary
D.
Left coronary
The circumflex artery travels in the coronary sulcus. The left anterior descending artery travels down the anterior surface of the interventricular septum. The right coronary artery originates from an ostium behind the right aortic cusp and travels behind the pulmonary
artery. The left coronary artery passes between the left atrial appendage and the pulmonary artery and generally divides into two branches.
Awarded 0.0 points out of 1.0 possible points.
5.
5.
ID: 25066824831
Which part of the heart is responsible for electrical impulse stimulation?
A.
Atrioventricular node
Incorrect
B.
Sinus node
Correct
C.
Bundle of His
D.
Right bundle branch
The sinus node, the pacemaker of the heart, is the site of impulse formation. The atrioventricular node is the junction of the electrical transmission between the atria and the ventricles. The impulse then travels to the bundle of His and, finally, to the right and left bundle branches. The terminal branches are the Purkinje fibers.
Awarded 0.0 points out of 1.0 possible points.
6.
6.
ID: 25066824836
Which cardiac event represents the measure of time from the onset of atrial activation to the onset of ventricular activation?
A.
PR interval
Correct
B.
QRS complex
C.
ST interval
D.
QT interval
The PR interval measures the time of onset of atrial activation to the onset of ventricular activation. The QRS complex represents the sum of all ventricular muscle cell depolarization. The ST interval is the time when the entire ventricular myocardium is depolarized. The QT interval is often called electrical systole.
Awarded 1.0 points out of 1.0 possible points.
7.
7.
ID: 25066824841
Which two items are related in the Frank-Starling law of the heart?
A.
Resting sarcomere length to tension generation
Correct
B.
Resting sarcomere length to end-diastolic volume
C.
Tension generation and left ventricular pressure
D.
Tension generation and diastolic filling pressures
The Frank-Starling law of the heart relates resting sarcomere length (expressed as the volume of blood in the heart at the end of diastole or end-diastolic volume) to tension generation (development of left ventricular pressure). In summary, this means the volume of blood in the heart at the end of diastole is directly related to the force of contraction of the next systole.
Awarded 1.0 points out of 1.0 possible points.
8.
8.
ID: 25066824846
Which statement correctly defines preload?
A.
Resistance to the ejection of blood from the left ventricle
B.
Wall tension that is related to internal blood vessel radius
C.
Pressure generated by atrial contraction
Incorrect
D.
Pressure generated by the end-diastolic volume
Correct
Preload is the pressure generated in the left ventricle at the end of diastole (end-diastolic volume). Afterload is the resistance or impedance to the ejection of blood from the left ventricle. Wall tension is directly related to the product of the intraventricular pressure and internal radius, and inversely related to the wall thickness (Laplace’s law). A tension curve lower than normal is characteristic of congestive heart failure.
Awarded 0.0 points out of 1.0 possible points.
9.
9.
ID: 25066824851
Which process is responsible for slowing the heart rate?
A.
Sympathetic excitation
Incorrect
B.
Parasympathetic excitation
Correct
C.
Bainbridge reflex
D.
Baroreceptor reflex
The parasympathetic excitation slows the heart rate and is often referred to as the cardioinhibitory center. The sympathetic stimulation is often called the cardioexcitation center because the heart rate increases. The Bainbridge reflex causes the heart rate to increase after intravenous infusions of blood or fluid. The baroreceptor reflex facilitates blood pressure changes and heart rate changes.
Awarded 0.0 points out of 1.0 possible points.
10.10.
ID: 25066824856
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Questions
3. Match the terms in the key to the descriptions provided below.
Key:
1. location of the heart in the thorax
a
atria
2. tricuspid and mitral valves
b.
atrioventricular valves
3. discharging chambers of the heart
C.
coronary arteries
4. visceral pericardium
d.
coronary sinus
5. receiving chambers of the heart
endocardium
e.
6. layer composed of cardiac muscle
f.
epicardium
7. provide nutrient blood to the heart muscle
mediastinum
g.
8. lining of the heart chambers
h. myocardium
9. pulmonary and aortic valves
i.
semilunar valves
10. drains blood into the right atrium
j.
ventricles
arrow_forward
You are assessing a 62 y/o with chief complaint of chest pain. The 12 lead indicates the pt is having an extensive anterior wal MI. Which of the following is the most likely life threatening problem that will develop?
a. Pulmonary edema from left heart failure
b. Bradycardia for. Complete HB
c. Ventricular aneurysm from inflected tissue
d. SVT from cardiac irritation
arrow_forward
I need the answer as soon as possible
arrow_forward
1. The nurse is caring for Mr. Adrian, an 82-year-old man with CHF who has a past medical history of diabetes and renal insufficiency. He is prescribed digoxin (Lanoxin) 0.125 mg IV and then 0.125 mg PO daily.a. What are the therapeutic effects of cardiac glycosides?b. Is this patient at risk for digoxin toxicity? Explain.c. What are the adverse effects of digoxin?Discuss the nursing considerations for digoxin administration.
arrow_forward
16. Causes of artifacts on an EKG tracing include:
A. Muscle tremor
OB. Poor electrode contact with the skin
C. External chest compression
OD. All of the above
arrow_forward
3. Match the terms in the key to the descriptions provided below.
1. drains blood into the right atrium
2. tricuspid and mitral valves
3. discharging chambers of the heart
4. innermost layer of the pericardium
5. receiving chambers of the heart
6. layer composed of cardiac muscle
7. provide nutrient blood to the heart muscle
8. visceral pericardium 18
9. pulmonary and aortic valves
V1878
1610
Key:
atria
atrioventricular valves
aths coronary arteries
coronary sinus
endocardium
epicardium
myocardium
semilunar valves
Bhoventricles
arrow_forward
Please answer all questions
arrow_forward
a.06: Which one of the following drug is useful for the treatment of CCF,
Hypertension, Cardiac Arrhythmia and Angina pectoris?
a. Digoxin.
b. Propranolol.
c. Captopril.
d. Losartan.
e. Furesamide
arrow_forward
29)
During a routine clinic visit, the nurse determines that a 5-
year-old girls systolic blood pressure is greater than the 90th
percentile. Which action should the nurse implement next?
A. Take the blood pressure two more times during the visit
and determine the average of the three readings.
B. Conduct a head-to-toe assessment and omit repeated
blood pressure during the examination.
C. Refer child to the healthcare provider and schedule
evaluation of blood pressure in two weeks.
D. Measure the child's blood pressure three times during
the visit and determine the highest of the readings.
words
201
Acchool age child procent with now oncat tuna 1 dinhotos
English (United States) Accessibility: Investigate
MacBook Pro
arrow_forward
A client is receiving an intravenous magnesium infusion to correct a serum level of 1.4 mEq/L. Which of the following assessments would alert the nurse to immediately stop the infusion?
A. Absent patellar reflex C. Premature ventricular contractions
B. Diarrhea D. Increase in blood pressure
Rationale:
Reference/s:
arrow_forward
23.Match the following
arrow_forward
1. Differentiate the platelet aggregometry from platelet closure time as to: (2 sentence each to differentiate per item)
a. principle
b. procedure
c. diagnostic importance
2. Give the pathology in : 1 sentence each only
a. hemolytic-uremic syndrome
b. thrombocytopenia with absent radii syndrome
c. Ehlers- Danlos syndrome
d. Osteogenesis imperfecta
e. Henoch-Schonlein purpura
f. senile purpura
g. purpura simplex
h. Hereditary hemorrhagic telangiectasia
i. scurvy
j. Scott syndrome
arrow_forward
I need the answer as soon as possible
arrow_forward
Which of the following assessment findings in a client who is receiving atenolol (Tenormin) for angina would be cause for the nurse to hold the drug and contact the provider? (Select all that apply.)a. Heart rate of 50 beats/minuteb. Heart rate of 124 beats/minutec. Blood pressure 86/56d. Blood pressure 156/88e. Tinnitus and vertigoWhy letter A and C are the right answer and why the remaining choices are not applicable to this.
arrow_forward
I need the answer as soon as possible
arrow_forward
A Stud X
H Sign x
Hom x
P Do H X
3.2 C X
DASI X
Bb
S Sign x
.com/courses/9532/quizzes/128043/take
> Quizzes > Warm-up: Medical Math # 55
Warm-up: Medical Math # 55
arted: Feb 11 at 8:56pm
Quiz Instructions
Question 1
100 pts
#55: You gave your patient the goal to reduce her blood pressure by 10%. Her
normal blood pressure was running 150/90. During her las visit, it was measured
at 130/80.
a) Did she meet her goal?
arrow_forward
3. Identify structures of the heart on the following pictures.
A.
В.
C.
H
D.
E.
F.
G.
Н.
G
I.
J.
A.
В.
C.
D.
E.
F.
G.
Н.
D
I.
J.
A.
В.
C.
D.
E.
F.
G.
Н.
I.
D
J.
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Cardiopulmonary Anatomy & Physiology
Biology
ISBN:9781337794909
Author:Des Jardins, Terry.
Publisher:Cengage Learning,
Related Questions
- 3. Match the terms in the key to the descriptions provided below. Key: 1. location of the heart in the thorax a atria 2. tricuspid and mitral valves b. atrioventricular valves 3. discharging chambers of the heart C. coronary arteries 4. visceral pericardium d. coronary sinus 5. receiving chambers of the heart endocardium e. 6. layer composed of cardiac muscle f. epicardium 7. provide nutrient blood to the heart muscle mediastinum g. 8. lining of the heart chambers h. myocardium 9. pulmonary and aortic valves i. semilunar valves 10. drains blood into the right atrium j. ventriclesarrow_forwardYou are assessing a 62 y/o with chief complaint of chest pain. The 12 lead indicates the pt is having an extensive anterior wal MI. Which of the following is the most likely life threatening problem that will develop? a. Pulmonary edema from left heart failure b. Bradycardia for. Complete HB c. Ventricular aneurysm from inflected tissue d. SVT from cardiac irritationarrow_forwardI need the answer as soon as possiblearrow_forward
- 1. The nurse is caring for Mr. Adrian, an 82-year-old man with CHF who has a past medical history of diabetes and renal insufficiency. He is prescribed digoxin (Lanoxin) 0.125 mg IV and then 0.125 mg PO daily.a. What are the therapeutic effects of cardiac glycosides?b. Is this patient at risk for digoxin toxicity? Explain.c. What are the adverse effects of digoxin?Discuss the nursing considerations for digoxin administration.arrow_forward16. Causes of artifacts on an EKG tracing include: A. Muscle tremor OB. Poor electrode contact with the skin C. External chest compression OD. All of the abovearrow_forward3. Match the terms in the key to the descriptions provided below. 1. drains blood into the right atrium 2. tricuspid and mitral valves 3. discharging chambers of the heart 4. innermost layer of the pericardium 5. receiving chambers of the heart 6. layer composed of cardiac muscle 7. provide nutrient blood to the heart muscle 8. visceral pericardium 18 9. pulmonary and aortic valves V1878 1610 Key: atria atrioventricular valves aths coronary arteries coronary sinus endocardium epicardium myocardium semilunar valves Bhoventriclesarrow_forward
- Please answer all questionsarrow_forwarda.06: Which one of the following drug is useful for the treatment of CCF, Hypertension, Cardiac Arrhythmia and Angina pectoris? a. Digoxin. b. Propranolol. c. Captopril. d. Losartan. e. Furesamidearrow_forward29) During a routine clinic visit, the nurse determines that a 5- year-old girls systolic blood pressure is greater than the 90th percentile. Which action should the nurse implement next? A. Take the blood pressure two more times during the visit and determine the average of the three readings. B. Conduct a head-to-toe assessment and omit repeated blood pressure during the examination. C. Refer child to the healthcare provider and schedule evaluation of blood pressure in two weeks. D. Measure the child's blood pressure three times during the visit and determine the highest of the readings. words 201 Acchool age child procent with now oncat tuna 1 dinhotos English (United States) Accessibility: Investigate MacBook Proarrow_forward
- A client is receiving an intravenous magnesium infusion to correct a serum level of 1.4 mEq/L. Which of the following assessments would alert the nurse to immediately stop the infusion? A. Absent patellar reflex C. Premature ventricular contractions B. Diarrhea D. Increase in blood pressure Rationale: Reference/s:arrow_forward23.Match the followingarrow_forward1. Differentiate the platelet aggregometry from platelet closure time as to: (2 sentence each to differentiate per item) a. principle b. procedure c. diagnostic importance 2. Give the pathology in : 1 sentence each only a. hemolytic-uremic syndrome b. thrombocytopenia with absent radii syndrome c. Ehlers- Danlos syndrome d. Osteogenesis imperfecta e. Henoch-Schonlein purpura f. senile purpura g. purpura simplex h. Hereditary hemorrhagic telangiectasia i. scurvy j. Scott syndromearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:CengageCardiopulmonary Anatomy & PhysiologyBiologyISBN:9781337794909Author:Des Jardins, Terry.Publisher:Cengage Learning,
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Cardiopulmonary Anatomy & Physiology
Biology
ISBN:9781337794909
Author:Des Jardins, Terry.
Publisher:Cengage Learning,