Examlex
Which of the following is the most complex level of organization?
Refractory Period
A time right after stimulation when a nerve or muscle cannot respond to additional stimulation.
Neuronal Membrane
The phospholipid bilayer that encases a neuron, allowing for the regulation of ion flow necessary for transmitting nerve impulses.
Sodium
A chemical element, symbol Na, that is a soft, silvery-white, highly reactive metal and is used in various compounds and biological functions.
Synaptic Cleft
The tiny gap between neurons at a synapse, through which neurotransmitters are released to transmit nerve impulses from one neuron to another.
Q5: Long-day plants will never flower if the
Q8: Why do snakes flick their tongue when
Q22: The likely effect on a neuron of
Q23: Which statement is correct about how carbon
Q32: Opercula are<br>A)gills on a lobster.<br>B)gill covers on
Q36: The pacemaker of the cardiac conduction system
Q37: Protein digestion occurs in the<br>A)mouth,stomach,and small intestine.<br>B)stomach
Q41: The main nitrogenous waste excreted by terrestrial
Q41: Which of the following hypothesis is supported
Q42: Which statement is NOT true about stomata?<br>A)As