In high altitude natives, where are high concentrations of myoglobin located?
I. Diaphragm
II. Myocardium
III. Pectoral muscles
IV. Adductor leg muscles
A) II only
B) I only
C) I, II, III, and IV
D) I and II only

Question

In high altitude natives, where are high concentrations of myoglobin located?
I.  Diaphragm
II. Myocardium
III. Pectoral muscles
IV. Adductor leg muscles
A) II only
B) I only
C) I, II, III, and IV
D) I and II only

Quizplus · Accepted Answer

High altitude natives have adaptations to improve oxygen delivery and utilization due to the lower oxygen levels in their environment. High concentrations of myoglobin, which stores and facilitates the movement of oxygen in muscle cells, are found in muscles that are heavily relied upon for sustained activity, including the diaphragm for breathing, the myocardium for heart function, pectoral muscles for upper body movement, and adductor leg muscles for walking and running. These adaptations help to ensure efficient oxygen use in vital and frequently used muscles.

In High Altitude Natives, Where Are High Concentrations of Myoglobin