NEU 201 Exam I Vocab and Practice---Textbook

Central Nervous System (CNS)

Brain and spinal cord

Peripheral Nervous System (PNS)

nerves

Afferent signal

information that arrives into the CNS

Efferent signal

information leaving the CNS

How to differentiate between efferent and afferent signals

“e”ffert → “exit,” “escape,”

How much does the brain weight?

1.5kg or around 3 lbs

The brain makes up about _____ of a person’s total body weight

2%

What are the approximate dimensions of the brain

about 6in long, 3.5in tall, total volume of about 1400 cm² and would fill about a third of a gallon

The brain is extremely _______-hungry

power hungry

About how much of the body’s total energy does the brain use up?

about 1/5 of total energy

The front of the head

rostral (or anterior)

The back of the head

caudal (or posterior)

The top of the head

dorsal (or superior)

The bottom of the head

ventral (or inferior)

Closer to the center of the brain

medial

Closer to the sides of the brain

lateral

The frontal lobe is _______ to the parietal lobe

rostral

The parietal lobe is _________ to the temporal lobe

dorsal

Electroactive

sensitive to electrical charge

The cell membranes of neurons are ___________

electroactive

Neurons are capable of changing the______________________, which makes them a very dynamic population of cells

electrical potential of their membranes

What allows a rapid method for one part of a neuron to send signals over long distances?

a neuron’s ability to change their electrical potential of their membranes