BIOS 255 EXAM 1 2023 QUESTIONS AND
ANSWERS GRADED A+ VERIFIED
name the structure and whether it contains oxygenated or deoxygenated blood -
ANSWER right atrium; deoxygenated
name the structure - ANSWER aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that contain
iron - ANSWER erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function, clotting,
and gas transfer-in that order? - ANSWER leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3) - ANSWER 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 - ANSWER CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
which ions mediate the upstroke, plateau, and downstroke of a cardiac action
potential. indicate the contraction phase that correlates to these events -
ANSWER upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? - ANSWER epicardium, myocardium,
endocardium
ANSWERS GRADED A+ VERIFIED
name the structure and whether it contains oxygenated or deoxygenated blood -
ANSWER right atrium; deoxygenated
name the structure - ANSWER aortic semilunar valve
oxygen is carried by _______ cells. it binds to proteins called ______ that contain
iron - ANSWER erythrocytes; hemoglobin
of the formed elements, which cells are responsible for immune function, clotting,
and gas transfer-in that order? - ANSWER leukocytes, platelets, erythrocytes
what are the major functions of blood? (you must name 3) - ANSWER 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 - ANSWER CO=SVxHR=70ml/beat/min=4900ml/min=4.9L/min
which ions mediate the upstroke, plateau, and downstroke of a cardiac action
potential. indicate the contraction phase that correlates to these events -
ANSWER upstroke=sodium; depolarization
plateau=calcium; contraction
downstroke=potassium; relaxation
what are the three layers of the heart? - ANSWER epicardium, myocardium,
endocardium
