Anatomy & Physiology C – EXAM
2019 UMD Invitational
Team Number (on your wristband): _____
Team/School Name:___________________________________
No abbreviations / PRINT LEGIBLY
Student Names (First & Last): PRINT LEGIBLY
1. ____________________________________________
2. ____________________________________________
Total Points Possible (written test): 100
Total Points Earned: __________
Team # ________
School:
1. (5 POINTS) Electrocardiograms (ECG/EKG)...
a. measure the mechanical activity of the heart.
b. are most useful in diagnosing heart murmurs.
c. show the summed electrical potentials generated by all cells of the heart.
d. have only two major components: waves and nodes.
e. display the action potential waveform of the cardiomyocytes.
2. (10 POINTS) Label the following five features of a normal EKG reading:
P-wave, QRS complex, T-wave, PR-segment, ST segment
Of the above five features, match each feature to one of the following phenomenon:
a)________________________ : Atrial depolarization
b)________________________ : Atrial contraction
c)________________________ : Ventricular depolarization
d) ________________________: Ventricular contraction
e)________________________ : Ventricular repolarization
3. (5 POINTS) Ivabradine selectively blocks If (funny current) channels in the heart. With
this drug applied, what would happen to an individual’s heart rate?
______________________________________
4. (5 POINTS) The ECG of a person suffering from complete heart block at the Bundle of
His would show:
a. an increased PR interval.
b. an inverted P wave.
c. no visible T wave.
d. a smaller QRS complex.
e. more P waves than QRS complexes per minute.
Team # ________
School:
5. (5 POINTS) What condition is shown in the FIRST EKG in the picture below? A normal
EKG is presented BELOW this condition for reference.
_______________________________________
6. (10 POINTS) Patients who have been lying down for an extended period of time and
rapidly switch to a standing position have been shown to have increased norepinephrine
and epinephrine levels in the blood and an elevated heart rate immediately after standing.
What phenomenon in the body accounts for this? Briefly describe how this phenomenon
works.
7. (10 POINTS) Renal artery stenosis (severe narrowing of the renal artery) is known to
cause hypertension (increased blood pressure). Why?
8. (5 POINTS) Which aspect of the nephron is impermeable to water?
a. Bowman’s capsule
b. proximal tubule
c. descending loop of Henle
d. ascending loop of Henle
Team # ________
School:
9. (5 POINTS) Which aspect of the nephron is almost exclusively permeable to water?
a. proximal tubule
b. descending loop of Henle
c. ascending loop of Henle
d. distal tubule
10. (5 POINTS) A glomerular filtration rate below ____ mL/min/1.73m2 indicates kidney
failure.
a. 50
b. 20
c. 15
d. 10
11. (5 POINTS) Lymph flows:
a. towards the heart only
b. away from the heart only
c. towards and away from the heart
d. within extracellular space only
12. (10 POINTS) List 10 sites where lymph travels in lymph circulation.
13. Lymph flow is driven by (you may choose more than one):
a. Smooth muscle in lymph vessels
b. Heart pump
c. Skeletal-muscle pump
d. Pressure gradients
e. Respiratory pump
Team # ________
School:
14. (5 POINTS) For this problem, use a male athlete (endurance running) with excellent
cardiovascular health. Calculate how many times his heart will beat in a FULL YEAR,
assuming that his heart rate stays at his NORMAL RESTING HEART RATE FOR THE
DURATION OF THE YEAR. Give your answer in both normal numeric and scientific
notation.
Normal: ______________
Scientific Notation: ___ x 10 ___
15. (13 POINTS) Below, use the structure of the nephron and label each part.
*be as specific as possible!*
Team # ________
School: