Biol 235 Final Review Questions With
Correct Detailed Answers 2025.
Which of the following blood cell types normally compromises the highest percentage of
the blood component labeled 2 in the figure?
A) eosinophils
B) monocytes
C) lymphocytes
D) neutrophils
E) basophils - ANSWER- D
The process by which the formed elements of the blood develop is called
A) hematospermia
B) hemopoiesis
C) thrombocytosis
D) hemostasis
E) polycythemia - ANSWER- B
The major functions of a red blood cell is
A) nutrient transport
B) cytokine stimulation
C) blood cell proliferation
D) gas transport
E) disease resistance - ANSWER- D
Which of the following blood cells is a phagocyte?
A) neutrophil
B) platelet
C) lymphocyte
D) basophil
E) erythrocyte - ANSWER- A
Which of the following hormones stimulates the development of megakaryoblasts?
A) erythropoietin
B) thrombopoietin
C) nitric oxide
D) human growth hormone
E) heparin - ANSWER- B
The intrinsic and extrinsic pathways of blood clotting are identical after formation of
A) thromboplastin
B) prothrombinase
C) clotting factor XII
,D) fibrin
E) tissue factor - ANSWER- B
Clotting of an unbroken blood vessel is called?
A) embolism
B) hemolysis
C) fibrinolysis
D) agglutination
E) thrombosis - ANSWER- E
What blood type is a person if their plasma contains only anti-A agglutinin?
A) A
B) B
C) O
D) AB
E) not enough information is provided to answer the question - ANSWER- B
The anatomical region found between the lungs that extends from the sternum to the
vertebral column and from the first rib to the diaphragm?
A) epicardium
B) abdominal cavity
C) pericardium
D) mediastinum
E) thoracic cavity - ANSWER- D
Through which structure does blood pass from the right atrium to the right ventricle?
A) bicuspid valve
B) interventricular septum
C) tricuspid valve
D) mitral valve
E) ascending aorta - ANSWER- C
Which valve below prevents blood from flowing back into the right ventricle?
A) tricuspid valve
B) bicuspid valve
C) pulmonary semilunar valve
D) aortic semilunar valve
E) mitral valve - ANSWER- C
Which structure in the figure is labeled C? - ANSWER- arch of aorta
Why does not a significant amount of blood flow back into the vena cava and coronary
sinus during atrial contraction?
A) the tricuspid valve blocks the venous openings
B) the bicuspid valve blocks the venous openings
C) the contraction of the atria compresses and closes the venous openings
, D) the semilunar valves block the venous openings
E) the venous valves block the venous openings - ANSWER- D
Cardiac muscle fibers are electrically connected to neighboring fibers by...
A) desmosomes
B) tight junctions
C) gap junctions
D) interneurons
E) chordae tendinae - ANSWER- C
Which of the following occurs at the beginning of the ventricular diastole?
A) p wave
B) r wave
C) q wave
D) qrs complex
E) t wave - ANSWER- D
In comparison the skeletal muscle fibers, the contractile fibers of the heart are
depolarized for ______ period of time.
A) a shorter
B) a longer
C) the same - ANSWER- B
Which term refers to the period of time during a cardiac cycle when contraction of a
chamber occurs and pressure within the chamber rises?
A) filling
B) systole
C) repolarization
D) diastole
E) fibrillation - ANSWER- B
Which event occurs during ventricular systole?
A) depolarization of the SA node
B) isovolumetric contraction
C) filling of the atria
D) opening of the AV valves
E) ventricular pressure drops - ANSWER- B
The frank starling law of the heart states that the heart is dependent upon the
autonomic nervous system for a stimulus contract...
A) the heart is dependent upon the autonomic nervous system for a stimulus to contract
B) the absolute refractory period for the heart must be longer than the duration of
contraction for efficient heart functioning
C) the heart contracts to the fullest extent possible for the conditions, or not at all
D) cardiac output equals heart rate multiplied by stroke volume - ANSWER- D
Correct Detailed Answers 2025.
Which of the following blood cell types normally compromises the highest percentage of
the blood component labeled 2 in the figure?
A) eosinophils
B) monocytes
C) lymphocytes
D) neutrophils
E) basophils - ANSWER- D
The process by which the formed elements of the blood develop is called
A) hematospermia
B) hemopoiesis
C) thrombocytosis
D) hemostasis
E) polycythemia - ANSWER- B
The major functions of a red blood cell is
A) nutrient transport
B) cytokine stimulation
C) blood cell proliferation
D) gas transport
E) disease resistance - ANSWER- D
Which of the following blood cells is a phagocyte?
A) neutrophil
B) platelet
C) lymphocyte
D) basophil
E) erythrocyte - ANSWER- A
Which of the following hormones stimulates the development of megakaryoblasts?
A) erythropoietin
B) thrombopoietin
C) nitric oxide
D) human growth hormone
E) heparin - ANSWER- B
The intrinsic and extrinsic pathways of blood clotting are identical after formation of
A) thromboplastin
B) prothrombinase
C) clotting factor XII
,D) fibrin
E) tissue factor - ANSWER- B
Clotting of an unbroken blood vessel is called?
A) embolism
B) hemolysis
C) fibrinolysis
D) agglutination
E) thrombosis - ANSWER- E
What blood type is a person if their plasma contains only anti-A agglutinin?
A) A
B) B
C) O
D) AB
E) not enough information is provided to answer the question - ANSWER- B
The anatomical region found between the lungs that extends from the sternum to the
vertebral column and from the first rib to the diaphragm?
A) epicardium
B) abdominal cavity
C) pericardium
D) mediastinum
E) thoracic cavity - ANSWER- D
Through which structure does blood pass from the right atrium to the right ventricle?
A) bicuspid valve
B) interventricular septum
C) tricuspid valve
D) mitral valve
E) ascending aorta - ANSWER- C
Which valve below prevents blood from flowing back into the right ventricle?
A) tricuspid valve
B) bicuspid valve
C) pulmonary semilunar valve
D) aortic semilunar valve
E) mitral valve - ANSWER- C
Which structure in the figure is labeled C? - ANSWER- arch of aorta
Why does not a significant amount of blood flow back into the vena cava and coronary
sinus during atrial contraction?
A) the tricuspid valve blocks the venous openings
B) the bicuspid valve blocks the venous openings
C) the contraction of the atria compresses and closes the venous openings
, D) the semilunar valves block the venous openings
E) the venous valves block the venous openings - ANSWER- D
Cardiac muscle fibers are electrically connected to neighboring fibers by...
A) desmosomes
B) tight junctions
C) gap junctions
D) interneurons
E) chordae tendinae - ANSWER- C
Which of the following occurs at the beginning of the ventricular diastole?
A) p wave
B) r wave
C) q wave
D) qrs complex
E) t wave - ANSWER- D
In comparison the skeletal muscle fibers, the contractile fibers of the heart are
depolarized for ______ period of time.
A) a shorter
B) a longer
C) the same - ANSWER- B
Which term refers to the period of time during a cardiac cycle when contraction of a
chamber occurs and pressure within the chamber rises?
A) filling
B) systole
C) repolarization
D) diastole
E) fibrillation - ANSWER- B
Which event occurs during ventricular systole?
A) depolarization of the SA node
B) isovolumetric contraction
C) filling of the atria
D) opening of the AV valves
E) ventricular pressure drops - ANSWER- B
The frank starling law of the heart states that the heart is dependent upon the
autonomic nervous system for a stimulus contract...
A) the heart is dependent upon the autonomic nervous system for a stimulus to contract
B) the absolute refractory period for the heart must be longer than the duration of
contraction for efficient heart functioning
C) the heart contracts to the fullest extent possible for the conditions, or not at all
D) cardiac output equals heart rate multiplied by stroke volume - ANSWER- D
