A&P Week 3 Quiz Nervous System

The sensory division of the peripheral nervous system is also called efferent.

• TRUE

• FALSE

The autonomic nervous system regulates the activity of (select all that apply):

• Cardiac muscles

• Glands

• Sensory receptors

• Skeletal muscle

• Smooth muscle

The sympathetic nervous system stimulates organs.

• TRUE

• FALSE

What is the role of the myelin sheath around the axon?

• Insulate

• Modulate

• Protect

• Support

What is the typical resting membrane potential of a cell?

• -90

• -70

• 0

• +70

• +90

What is the main extra-cellular cation?

• Ca+

• K+

• Na+

• Cl-

• Protein-

What are the main intra-cellular anions?

• Ca+

• K+

• Na+

• Cl-

• Protein-

Depolarisation of a cell membrane will shift the membrane potential toward 0 mV.

• TRUE

• FALSE

Select the appropriate statement related to the rising phase of an action potential:

• Voltage-gated Na+ and K+ are open

• Voltage-gated Na+ and K+ are closed

• Voltage-gated K+ are closed and Na+ are open

• Voltage-gated K+ are open and Na+ are closed

Myelinated axons have slower conduction than unmyelinated ones.

• TRUE

• FALSE