In IgG, the antigen binding site is formed by the A) variable ...

[fasfsadfdsfa]

In IgG, the antigen binding site is formed by the
 A) variable segment of the light chain.
  B) variable segment of the heavy chain.
  C) constant segment of the heavy chain.
  D) variable segments of both the light and heavy chains.
  E) ionized segment of the light chain and the isotropic segment of the heavy chain.

Question 2

Jake steps on a piece of ice with his right foot. Outline the pathway this sensation will travel to reach his brain being specific about the structures along the way.

[princessflame2016]

Answer to Question 1

D

Answer to Question 2

When Jake steps on a piece of ice it will activate a thermoreceptor which are free nerve endings in the dermis. This sensation will travel up the axon of a first-order neuron entering the CNS through the dorsal root. The first-order neuron will synapse with a second-order (interneuron) in the posterior gray horn. The second-order axons will enter the lateral spinothalamic tract on the opposite side of the spinal cord and ascend to the thalamus. At the thalamus the second-order neuron will synapse with a third-order neuron which will end at the primary sensory cortex on the left side of the brain.

[fasfsadfdsfa]

Both answers were spot on, thank you once again

[princessflame2016]

Great! Please up vote