Endocrine, Blood and Heart Exam 1
Questions and Answers A+ Guide
The protein which binds and transports oxygen and carbon dioxide in the
blood is _____.
a) Located in white blood cells
b) Heme
c) Hemoglobin
d) Albumin - correct answers✅✅Hemoglobin
Closure of the bicuspid valve _____.
a) Occurs at the same time as the pulmonary semilunar valve
b) Prevents blood in the left ventricle from entering the left atrium
c) Occurs when the atria contract
d) Prevents blood in the left ventricle from entering the pulmonary artery -
correct answers✅✅Prevents blood in the left ventricle from entering the
left atrium
When positively charged ions move into a cell, the interior of the cell
becomes more positive. This is referred to as _________.
a) Repolarization
b) Depolarization
c) Hyperpolarization
d) Refractory - correct answers✅✅Depolarization
During an action potential of a cardiac pacemaker cell, depolarization is due
to _____.
a) Ca2+ influx through voltage-gated Ca2+ channels
b) Na+ influx through voltage-gated Na+ channels
c) K+ influx through voltage-gated K+ channels
, Endocrine, Blood and Heart Exam 1
Questions and Answers A+ Guide
d) K+ efflux through voltage-gated K+ channels - correct
answers✅✅Ca2+ influx through voltage-gated Ca2+ channels
If a patient has Addison's syndrome, what symptoms are they likely to
exhibit?
a) Diabetes
b) Low blood sugar and Low blood pressure
c) Hypersecretion of corticosteroids
d) Diuresis (excess urination) - correct answers✅✅Low blood sugar and
Low blood pressure
Which wavelet correlates to atrial depolarization on a typical
electrocardiogram?
a) QRS complex
b) T wave
c) Q-T interval
d) P wave - correct answers✅✅P wave
Which statement is FALSE?
a) Growth hormone (GH) is released from the anterior pituitary b) Antidiuretic
hormone (ADH) is released from the adrenal cortex
c) Adrencorticotropic hormone (ACTH) is a tropic hormone
d) Thyroid releasing hormone (TRH) targets the anterior pituitary - correct
answers✅✅Antidiuretic hormone (ADH) is released from the adrenal cortex
Which statement is FALSE?
a) The smallest component of whole blood is plasma
Questions and Answers A+ Guide
The protein which binds and transports oxygen and carbon dioxide in the
blood is _____.
a) Located in white blood cells
b) Heme
c) Hemoglobin
d) Albumin - correct answers✅✅Hemoglobin
Closure of the bicuspid valve _____.
a) Occurs at the same time as the pulmonary semilunar valve
b) Prevents blood in the left ventricle from entering the left atrium
c) Occurs when the atria contract
d) Prevents blood in the left ventricle from entering the pulmonary artery -
correct answers✅✅Prevents blood in the left ventricle from entering the
left atrium
When positively charged ions move into a cell, the interior of the cell
becomes more positive. This is referred to as _________.
a) Repolarization
b) Depolarization
c) Hyperpolarization
d) Refractory - correct answers✅✅Depolarization
During an action potential of a cardiac pacemaker cell, depolarization is due
to _____.
a) Ca2+ influx through voltage-gated Ca2+ channels
b) Na+ influx through voltage-gated Na+ channels
c) K+ influx through voltage-gated K+ channels
, Endocrine, Blood and Heart Exam 1
Questions and Answers A+ Guide
d) K+ efflux through voltage-gated K+ channels - correct
answers✅✅Ca2+ influx through voltage-gated Ca2+ channels
If a patient has Addison's syndrome, what symptoms are they likely to
exhibit?
a) Diabetes
b) Low blood sugar and Low blood pressure
c) Hypersecretion of corticosteroids
d) Diuresis (excess urination) - correct answers✅✅Low blood sugar and
Low blood pressure
Which wavelet correlates to atrial depolarization on a typical
electrocardiogram?
a) QRS complex
b) T wave
c) Q-T interval
d) P wave - correct answers✅✅P wave
Which statement is FALSE?
a) Growth hormone (GH) is released from the anterior pituitary b) Antidiuretic
hormone (ADH) is released from the adrenal cortex
c) Adrencorticotropic hormone (ACTH) is a tropic hormone
d) Thyroid releasing hormone (TRH) targets the anterior pituitary - correct
answers✅✅Antidiuretic hormone (ADH) is released from the adrenal cortex
Which statement is FALSE?
a) The smallest component of whole blood is plasma
