Flashcards in Chapter 1 In-Class Quiz Deck (15):
The human brain contains approximately----- ------ individual neurons.
A motor neuron ------- while a sensory neuron -------
Receives excitation from other neurons; is specialized at one end to be highly sensitive
The structures at the end of axons are the
What structure is composed of two layers of fat molecules that are free to flow around one another?
Santiago Ramon y Cajal demonstrated that
Neurons are separate from one another
The tree-like branches of a neuron that receive information from other neurons are called --------.
Glial cells -------.
are smaller but more numerous than neurons in the human brain
What type of glia helps to synchronize the activity of axons?
What leads to Korsakoff's syndrome?
Thiamine deficiency due to chronic alcoholism
The resting potential is mainly the result of
Negatively charged proteins inside the cell
When a neuron's membrane is at rest, the concentration gradient tends to move sodium ----- the cell and the electrical gradient tends to move it ------ the cell.
When a neuron's membrane is at rest, the concentration gradient tends to move potassium ------- the cell and the electrical gradient tends to move it ------- the cell.
Out of; into
Water, Oxygen. and --------- most freely flow across a cell membrane.
The concentration gradient refers to the --------.
difference in distribution for various ions between the inside and outside of the membrane