Nervous System

Front

What is the primary ion concentration in the cytosol when a cell is at rest?

Back

The cytosol contains a lower concentration of sodium and a higher concentration of potassium.

Front

What does the somatic nervous system primarily control?

Back

The somatic nervous system conducts impulses from the CNS to the skin and skeletal muscles.

Front

How does the lens of the eye change when focusing on a distant object?

Back

The lens becomes more flattened.

Front

What is the meaning of the name of the cranial nerve known as 'the wanderer'?

Back

The vagus nerve is known as 'the wanderer' because it extends to various organs throughout the body.

Front

What anatomical feature separates the cerebral hemispheres?

Back

The longitudinal fissure separates the cerebral hemispheres.

Front

What is the function of the vagus nerve?

Back

The vagus nerve regulates heart rate, gastrointestinal peristalsis, sweating, and several muscle movements.

Front

What is the role of potassium ions in resting membrane potential?

Back

Potassium ions help maintain the negative charge inside the cell during resting potential.

Front

What is the difference between the somatic and autonomic nervous systems?

Back

The somatic nervous system controls voluntary movements, while the autonomic nervous system regulates involuntary functions.

Front

What is the significance of the central sulcus in the brain?

Back

The central sulcus separates the frontal lobe from the parietal lobe.

Front

What is the primary function of sensory neurons?

Back

Sensory neurons transmit sensory information from the body to the central nervous system.