Bone Comparisons Between Hunter-Gatherers and Later Agriculturalists, Then Modern Peoples

question 8

Multiple Choice

Bone comparisons between hunter-gatherers and later agriculturalists, then modern peoples show:

• A)an increase in size.
• B)greater robusticity of the long arm bones only.
• C)a decline in size.
• D)a stasis in bone density.

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Definitions:

Spinal Nerves

Nerves that emerge from the spinal cord and branch out to innervate different parts of the body.

Motor Neurons

Neurons that carry signals from the spinal cord or brain to effectors (muscles or glands) to trigger movement or action.

Patellar Reflex

A knee jerk reflex triggered by tapping the patellar tendon, used to test the neural circuits within the spinal cord.

Effectors

Biological structures that act in response to a signal from the nervous system.