Figure 46.2 -

question 69

Essay

Figure 46.2
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Answer the question using the accompanying figure. Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O₂binding affinity than that of humans. How would the llama hemoglobin-O₂dissociation curve differ from that of a human?

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Definitions:

Dorsal Horns

Regions in the spinal cord where sensory neurons enter and transmit signals to the brain, involved in processing touch, pain, and temperature.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back and transmits messages between the brain and the rest of the body.

Neurotransmitters

Chemical substances in the body that transmit signals across a chemical synapse from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Dynorphin

A type of opioid peptide that plays a role in pain, emotion, stress, and addiction processes within the body.