Ch 18 Blood And Cha 19 Heart

38 Questions | By Dru31988 | Updated: Mar 21, 2022 | Attempts: 314

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1.

These are the least abundant formed elements,
- A.
  
  Erythrocytes
- B.
  
  Basophils
- C.
  
  Neutrophils
- D.
  
  Eosinophils
- E.
  
  Platelets
2.

The Volume of blood ejected by each ventricle in one minute is called
- A.
  
  The cardiac reserve
- B.
  
  The Cardiac output
- C.
  
  The stroke volume
- D.
  
  The afterload
- E.
  
  The preload
3.

____________ is the most abundant protein in Plasma
- A.
  
  Creatine
- B.
  
  Insulin
- C.
  
  Bilirubin
- D.
  
  Creatinine
- E.
  
  Albumin
4.

Mitral valve prolapse (MVP) generates a murmur associated with the ________ heart sound that occures when the ________.
- A.
  
  Dupp (S2); ventricles relax
- B.
  
  Dupp (S2); atria relax
- C.
  
  Lubb (S1); atria contract
- D.
  
  Lubb (s1); ventricles relax
- E.
  
  Lubb (S1); ventricles contract
5.

These are features of cardiac muscle finers except
- A.
  
  They have about the same endurance as skeletal muscle fibers.
- B.
  
  They depend almost exclusively on aerobic respiration
- C.
  
  They are very rich in myoglobin.
- D.
  
  They are rich in glycogen
- E.
  
  They have huge mitochondria
6.

The _________ is the pacemaker that initiates each heart beat.
- A.
  
  Sinoatrial (SA) Node
- B.
  
  Autonomic nervous system
- C.
  
  Sympatheic division of nervous system
- D.
  
  Atrioventricular (AV) node
- E.
  
  Cardiac conducation system
7.

This is the correct sequence of events of the cardiac cycle.
- A.
  
  Ventricular filling → ventricular ejection→ isovolumetric contraction → isovolumetric rekaxation.
- B.
  
  Ventricular filling → isovolumetric relaxtion Ventricular filling → isovolumetric contraction → ventricular ejection.
- C.
  
  Ventricular filling → isovolumetric relaxation → ventricular ejection → isovolumetric contraction.
- D.
  
  Ventricular filling → isovolumetric contraction → isovolumetric relaxtion → ventricular ejection.
- E.
  
  Ventricular filling → isovolumetric contraction → ventricular ejection → isovolumetric relaxation.
8.

Pericardial fluid is found between
- A.
  
  The visceral pericardium and the epicardium
- B.
  
  The visceral pericardium and the myocardium
- C.
  
  Myocardium and endocardium
- D.
  
  Epicardium and myocardium
- E.
  
  The parietal and visceral membranes
9.

Cardiac muscle shares this feature with skeletal muscle
- A.
  
  Cardiac muscle fibers communicate by electrical (gap) junctions
- B.
  
  Some cardiac muscle fibers are autorhythmic
- C.
  
  Cardiac muscle fibers have striations
- D.
  
  All cardiac muscle fibers depend on nervous stimulation
- E.
  
  Cardiac muscle fibers are joined end to end by intercalated discs
10.

Cardioinhibitory centers in the __________ receive input from __________.
- A.
  
  Thalamus; chemoreceptors in the medulla oblongata.
- B.
  
  Pons; baroreceptors in the internal carotid
- C.
  
  Cortex; proprioceptors in the muscles
- D.
  
  Hypothalamus; propriocepters in the joints
- E.
  
  Medulla oblongata; chemoreceptors in the pernicious anemia.
11.

A deficency of _______ can cause pernicious anemia.
- A.
  
  Vitamin B12
- B.
  
  Iron
- C.
  
  Folic acid
- D.
  
  EPO secretion
- E.
  
  Vitamin C
12.

Differential count of ________ typically increases in response to bacterial infection
- A.
  
  Erythrocytes
- B.
  
  Neutrophils
- C.
  
  Monocytes
- D.
  
  Eosinophils
- E.
  
  Basophils.
13.

The__________preforms the work of the heart.
- A.
  
  Pericardial cavity
- B.
  
  Endocardium
- C.
  
  Myocardium
- D.
  
  Epicardium
- E.
  
  Fiberous skeleton
14.

Anemia has these potential consequences except
- A.
  
  The individual is lethargic
- B.
  
  More fluid transfers from the bloodstream to the intercellular space
- C.
  
  Blood viscosity is increased
- D.
  
  Blood osmolarity is reduced
- E.
  
  Blood resistance to flow is reduced
15.

This figure shows the events of the cardia cycle. What does "4" represent?
- A.
  
  AV valve closing
- B.
  
  Both aortic and AV valves opening
- C.
  
  Aortic valve closing
- D.
  
  AV valve opening
- E.
  
  Aortic valve opening
16.

This figure shows the e vents of the cardiac cycle. At 0.2 sec in the Gragh _______.
- A.
  
  The aortic Valve in open
- B.
  
  The AV valve is open
- C.
  
  The ventricles have reached end-diastolic volume
- D.
  
  The ventricles are in systole
- E.
  
  The ventricles are in the isovolumetric phase
17.

Most of the ventricle fillinf occurs
- A.
  
  During atrial diastole.
- B.
  
  During atrial systole
- C.
  
  During ventricular systole
- D.
  
  During isovolumetric contraction
- E.
  
  When the AV valve is closed
18.

The main reason why an individual AB, Rh-negative cannot donarw blood to an individual A, Rh-positive is because
- A.
  
  Anti-D antibodies in the donor will agglutinate RBC of the recipient
- B.
  
  Anto-B antibodies in rhw donor ill agglutinate RBCs of the recipient
- C.
  
  Anti-A antibodies in the recipient will agglutinate RBCs of the donor.
- D.
  
  Anti-B antibodies in the recipient will agglutinate RBCs of the donor.
- E.
  
  Anti-B antibodies in the donor will agglutinate RBCs of the recipient
19.

An individual has type B, Rh-positive blood. The individual has _______ antigen can produce anti- ________ antibody(ies)
- A.
  
  D;A and B
- B.
  
  A and D;B
- C.
  
  B and D; A
- D.
  
  B; A and D
- E.
  
  A; B and D
20.

Which of these is not part of the cardiac conduction system.
- A.
  
  The tendinous cords (TC)
- B.
  
  The Purjinje fiber
- C.
  
  The sinoatrial (SA) node
- D.
  
  The atrioventicular (AV) bundle (bubdle of His)
- E.
  
  The atrioventicular (AV) node
21.

Any abnormal cardia rhythm is called
- A.
  
  Ectopic focus
- B.
  
  Arrhythmia
- C.
  
  Nodal rhythm
- D.
  
  Heart block
- E.
  
  Sinus rhythm
22.

Atrial depolarization begins during
- A.
  
  Atria systole
- B.
  
  The T wave
- C.
  
  The first heart sound
- D.
  
  The QRS complex
- E.
  
  The P wave
23.

This is the correct path of an electrial excitation from the pacemaker to a cardiocyete in the left ventricle.
- A.
  
  Sinoatrial (SA) node - atrioventricular (AV) bundle - atrioventricular (AV)node - Purjinje fibers - cardiocyte in LV
- B.
  
  Sinoatrial (SA) node - atrioventricular (AV)node - atrioventricular (AV)bundle- purjinje fiber - cardiocyte in LV
- C.
  
  Atrioventricular (AV) node - purjinje fiber- atrioventricular (AV) bubdle - sinoatrial (SA) node- Cardiocyte in LV
- D.
  
  Sinoatrial (SA) node - atrioventricular (AV)node - purjinje fiber- atrioventricular (AV)bundle[ cardiocyte in LV
- E.
  
  Atrioventricular (AV) node - sinoatrial (SA) node - atrioventricular (AV) bundle - purjinje finer cardiocyte in LV
24.

The plateau in the action potential of cardiac muscle results from the action of
- A.
  
  Fast CO2+ channels
- B.
  
  K+ inflow.
- C.
  
  Na+ Inflow
- D.
  
  K+ outflow
- E.
  
  Slow Ca2+ channels
25.

These are the most abundant agranulocytes
- A.
  
  Monocytes
- B.
  
  Neutrophils
- C.
  
  Eosinophils
- D.
  
  Lymphocytes
- E.
  
  Marcrophages