Anatomy and Physiology Nervous System 1

Question 1

What is the term for the gap between two neurons at a synapse?

Accepted Answer

Synaptic cleft

Answer

The synaptic cleft is the narrow fluid-filled space between the presynaptic and postsynaptic membranes where neurotransmitters diffuse.

Question 2

Which part of the brain controls balance, coordination, and fine motor movement?

Accepted Answer

Cerebellum

Answer

The cerebellum, located at the posterior base of the brain, coordinates voluntary motor movements, balance, and muscle tone.

Question 3

What type of neuron carries signals from sensory receptors toward the central nervous system?

Accepted Answer

Afferent neuron

Answer

Afferent (sensory) neurons transmit signals from peripheral sensory receptors to the brain and spinal cord for processing.

Question 4

What is the resting membrane potential of a typical neuron?

Accepted Answer

-70 mV

Answer

The resting membrane potential of a typical neuron is approximately -70 millivolts, maintained by the sodium-potassium pump and selective membrane permeability.

Question 5

Which neurotransmitter is primarily responsible for muscle activation at the neuromuscular junction?

Accepted Answer

Acetylcholine

Answer

Acetylcholine (ACh) is the neurotransmitter released at the neuromuscular junction, binding to nicotinic receptors to initiate muscle contraction.

Anatomy and Physiology Practice Test

Anatomy and Physiology Practice Test

Anatomy and Physiology Nervous System 1