The isotonic solution allow the cells to move water and nutrients in and out of the cells. This is necessary for blood cells to perform their function of delivering oxygen and other nutrients to other parts of the body.

6 0

2 years ago

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The membrane has open K channels, and changing extracellular K concentration results in a change in membrane potential. Changing

MrRissso [65]

Answer: Closed

Explanation:

At resting membrane potential( RMP) sodium channels remained shut, this is because , previously in depolarisation,the voltage gated sodium channels were opened for sodium to diffuse into the Axon. However these channels closed after reaching their refractory period,s.

Therefore a change in the extracellular concentration of sodium will not open them

3 0

3 years ago

Frank uses improper body position to lift a heavy box and strains the muscles in his lumbar region. which muscles are most likel

forsale [732]

Lumbar region refers to the lower back or lower spine.

important muscles of the lumbar spines are:
1) multifidus - stabilizes and rotates the lumbar spine
2) longissimus
3) spinalis

lower back pain are caused by improper posture, compression fracture, muscle injuries, fractured vertebrae, spinal stenosis, osteoarthritis, herniated disc.

5 0

2 years ago