Human Physiology An Integrated Approach newly generated

Human Physiology An Integrated Approach newly
generated

2. ________ seperates the right atrium from the right ventricle and
regulates the blood flow between them?
A. Mitral valve
B. Tricuspid valve
C. Bicuspid valve
D. Pulmonary valve
E. Aortic valve
ANSWER: B


1. _______ is the amount of inward current required to bring a
myocardial cell to the threshold potential?
A. Depolarizing current
B. Refractory
C. Excitability
D. Equilibrium potential
E. Rapid influx
ANSWER: C

,3. ________ allows action potentials to spread between cardiac cells by
permitting the passage of ions between cells, producing depolarization
of the heart muscle?
A. Gap junctions
B. Sarcomere
C. Fascia adherens
D. Demosomes
E. Macula adherens
ANSWER: A


4. For most of the duration of the action potential the ________ is
completely refactory to fire another action potential?
A. Membrane
B. Upstroke
C. Na+
D. Ventricular cell
E. ARP
ANSWER: D


5. What is recorded by placing series of electrodes on the surface of the
body?
A. ERP
B. AV node

, C. ARP
D. RRP
E. ECG
ANSWER: E


6. Blood is ejected from the left ventricle into the ________?
A. Right ventricle
B. Aorta
C. Semi-lunar valve
D. Lungs
E. Pulmonary vein
ANSWER: B


7. Heart rate is measured by counting the number of ________
complexes per minute?
A. R-R
B. QT
C. PR
D. QRS
E. QRT
ANSWER: D