Question

Match the following biofeedback pathway with the more appropriate examples. Answers may be used more than once.

Question 4 options:

12 Entry of sodium into the axon of a neuron activating adjacent voltage-gated sodium channels 12 Release of parathyroid hormone activating osteoclast activity to increase calcium release into the blood 12 Entry of calcium into smooth muscle cells triggering the release of calcium from the sarcoplasmic reticulum 12 Constriction of dermal blood vessels to minimize passive heat loss when you are a building a snowman

1. Positive feedback pathway 2. Negative feedback pathway

Answer 1

Entry of sodium into the axon of a neuron activating adjacent voltage-gated sodium channels positive feedback mechanism.

Release of parathyroid hormone activating osteoclast activity to increase calcium release into the blood -- positive feedback mechanism.

Entry of calcium into smooth muscle cells triggering the release of calcium from the sarcoplasmic reticulum Negative feedback mechanism.

Constriction of dermal blood vessels to minimize passive heat loss when you are a building a snowman Negative feedback mechanism.