ION CHANNELS

BIOPSYCH EXAM 1

What occurs in the resting potential?

K + channels open and create the resting potential.

What occurs in the (2) area

Any depolarizing force will bring the membrane potential closer to threshold.

What occurs in the (3) area

At threshold, voltage-gated Na + channels open, causing a rapid change of polarity— the action potential.

What occurs in the (4) area

Na + channels automatically close again; gated K + channels open, repolarizing and even hyperpolarizing the cell (afterpotential).

What occurs in the (5) area

All gated channels close. The cell returns to its resting potential.

What makes up the forebrain region

Telencephalon and Diencephalon

What makes up the Telencephalon region

Cerebral cortex, basal ganglia and limbic system

What makes up the Diencephalon region

Thalamus and Hypothalamus

What is the yellow area

Spinal cord

What is the pink area

medulla

What is the greenish/yellow area

pons

What is the purple area

midbrain

What is the orange area

hypothalamus

What is the red area

thalamus

What is the tan area

Limbic system

What is the darkish blue area

basal ganglia

What is the light blue shaded area

cortex

Identify the heart

Nervous system

Identify the check mark

Central NS

Identify the thumbs up

Brain

Identify the 100

Spinal cord

Identify the fire

Peripheral NS

Identify the star

Autonomic NS

Identify the eyes

Somatic NS

Identify the question mark

Sympathetic NS

Identify the clapping hands

Parasympathetic NS

central nervous system (CNS)

the portion of the nervous system that includes the brain and the spinal cord

Peripheral nervous system (PNS)

The portion of the nervous system that includes all the nerves and neurons outside the brain and spinal cord

The somatic nervous system

Which consists of nerves that interconnect the brain and the major muscles and sensory systems of the body

The autonomic nervous system

Which consists of nerves that connect primarily to the internal organs

Vagus Nerve

The primary route by which the brain both controls and receives information from many internal organs