The area of the skin that provides sensory input to the CNS by one pair of spinal nerves is a(n)

When moving from the base to the apex of the basilar membrane, how does its physical properties change? 

The Gonadotropin called   _______ stimulates the production of gametes (sperm or egg). 

Using the figure below, showing the pathway of sound, describe the key events which occur in the outer, middle, and inner. To receive full credit, the key events labeled 1-5 need to be discussed.  Hint: labeled position 4 and 5 are the two different pathways sound waves can take when traveling through the inner ear (helicotrema path and basilar membrane path)

Vision is maintained because the outer segment of photoreceptors is renewed every 24 hours. 

Compare and contrast the Endocrine System and Nervous System. To receive full credit the discussion needs to include four of the following features: communication method, transmission pathway, speed of response, duration of the effect, targeting, main components, or primary function. 

_______ is defined as pressure disturbances, alternating areas of high and low pressure, which are produced by vibrating objects and propagated by air molecules. 

_______ are the long-distance chemical signals used by the endocrine system which can travel through either the blood or the  _______ to target cells. 

When light hyperpolarizes photoreceptors, what inhibitory neurotransmitter do they stop releasing? 

Visual pigments are differentiated based on the identity of what protein?