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bios 255 exam 1 Questions and Correct
Answers/ Latest Update / Already Graded
name the structure and whether it contains oxygenated or deoxygenated blood
Ans: right atrium; deoxygenated
name the structure
Ans: aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that contain
iron
Ans: erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function, clotting,
and gas transfer-in that order?
Ans: leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3)
Ans: 1) plays a role in immune function
2) temp regulation
3) pH regulation
4) gas/nutrients/ waste transport
5) regulates water loss
a patient has a stroke volume of 70ml/beat, a heart rate of 70 beats/min, a mean
arterial pressure of 100, systolic BP of 95 and diastolic BP of 60. calculate output
of this patient
Ans: CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
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which ions mediate the upstroke, plateau, and downstroke of a cardiac action
potential. indicate the contraction phase that correlates to these events
Ans: upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart?
Ans: epicardium, myocardium, endocardium
what is the fluid filled sac called that surrounds the heart?
Ans: pericardium
when red blood cells get broken down, the iron molecule is transferred from the
macrophage to the liver with which transfer protein?
Ans: transferrin
Which wave indicates atrial depolarization?
Ans: P wave
what makes up this component of whole blood?
Ans: serum, water, plasma proteins, nutrients, dissolved gases and electrolytes
what type of white blood cell is displayed in this image
Ans: eosinophils
where does the breakdown of red blood cells start?
Ans: in a macrophage
bios 255 exam 1 Questions and Correct
Answers/ Latest Update / Already Graded
name the structure and whether it contains oxygenated or deoxygenated blood
Ans: right atrium; deoxygenated
name the structure
Ans: aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that contain
iron
Ans: erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function, clotting,
and gas transfer-in that order?
Ans: leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3)
Ans: 1) plays a role in immune function
2) temp regulation
3) pH regulation
4) gas/nutrients/ waste transport
5) regulates water loss
a patient has a stroke volume of 70ml/beat, a heart rate of 70 beats/min, a mean
arterial pressure of 100, systolic BP of 95 and diastolic BP of 60. calculate output
of this patient
Ans: CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
, 2 | Page
which ions mediate the upstroke, plateau, and downstroke of a cardiac action
potential. indicate the contraction phase that correlates to these events
Ans: upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart?
Ans: epicardium, myocardium, endocardium
what is the fluid filled sac called that surrounds the heart?
Ans: pericardium
when red blood cells get broken down, the iron molecule is transferred from the
macrophage to the liver with which transfer protein?
Ans: transferrin
Which wave indicates atrial depolarization?
Ans: P wave
what makes up this component of whole blood?
Ans: serum, water, plasma proteins, nutrients, dissolved gases and electrolytes
what type of white blood cell is displayed in this image
Ans: eosinophils
where does the breakdown of red blood cells start?
Ans: in a macrophage
