Nerve Muscle Physiology Quiz

What is the primary function of a neuron?

• To support glial cells

• To maintain resting membrane potential

• To transmit signals to other neurons and tissues

• To produce neurotransmitters

Which part of the neuron is also known as the soma?

• Dendrites

• Axon

• Cell Body

• Synaptic Knob

What are Nissl granules primarily composed of?

• Proteins

• Neurotransmitters

• Ribose nucleoproteins

• Lipids

What is the function of the myelin sheath?

• To protect the nucleus

• To facilitate conduction of nerve impulses

• To store neurotransmitters

• To increase the size of the neuron

What is the initial segment of the axon called?

• Axon Hillock

• Synaptic Knob

• Dendrite

• Cell Body

What is the term for the brief sequence of changes in membrane potential following excitation?

• Refractory period

• Threshold potential

• Action potential

• Resting potential

What does the strength-duration curve represent?

• The relationship between axon length and conduction speed

• The relationship between neuron size and impulse speed

• The relationship between stimulus strength and duration

• The relationship between neurotransmitter release and receptor binding

What is the term for the weakest current strength that can excite a tissue?

• Utilization time

• Rheobase

• Chronaxie

• Threshold stimulus

What is the process called when the nerve impulse is conducted along the nerve fiber?

• Conductivity

• Repolarization

• Accommodation

• Depolarization

What is the role of voltage-gated Na+ and K+ channels during action potential?

• To support glial cell function

• To regulate ionic basis of action potential

• To facilitate synaptic transmission

• To maintain resting potential