A woman found confused on the floor of her apartment is brought to the emergency room by her daughter. She complains of muscle weakness. Serum electrolytes were determined and shown below. Use this information to answer questions 13-16. Electrolyte Plasma Levels (Normal) ICF Conductance Na+ 138 mM (135-155 mM) 14 mM 1 K+ 2.9 mM (3.5-5.0 mM) 155 mM 7 Cl- 115 mM (110-120 mM) 20 mM 0 13. The equilibrium potential for Na+ in this patient will be at__________. A) 60 mV B) -60 mV C) 65 mV D) -70 mV 14. The equilibrium potential for K+ in this patient will be at__________. A) -70 mV B) -90 mV C) 104 mV D) -104 mV 15. The resting membrane potential in this patient will be at__________. A) 0 mV B) -70 mV C) -83 mV D) -104 mV

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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A woman found confused on the floor of her apartment is brought to the emergency room by her
daughter. She complains of muscle weakness. Serum electrolytes were determined and shown below.
Use this information to answer questions 13-16.

Electrolyte Plasma Levels (Normal) ICF Conductance
Na+ 138 mM (135-155 mM) 14 mM 1
K+ 2.9 mM (3.5-5.0 mM) 155 mM 7
Cl- 115 mM (110-120 mM) 20 mM 0

13. The equilibrium potential for Na+ in this patient will be at__________.

A) 60 mV
B) -60 mV
C) 65 mV
D) -70 mV

14. The equilibrium potential for K+ in this patient will be at__________.

A) -70 mV
B) -90 mV
C) 104 mV
D) -104 mV

15. The resting membrane potential in this patient will be at__________.

A) 0 mV
B) -70 mV
C) -83 mV
D) -104 mV 

 

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