Answer the following statement(s) true (T) or false (F)
1. The axon of a neuron can only communicate with other neuronal cells.
2. Neurons are the only electrically-active cells.
3. When a neuron is not firing, the sodium-potassium pump is inactive.
4. Humans are unique among animals due to our highly-evolved repertoire of sensory receptors.
5. A single type of receptor is responsible for detecting all tactile pressure in humans.
1. FALSE - Motorneurons communicate directly with muscle.
2. FALSE - Muscles are also formed from electrically-active cells.
3. FALSE - Even when a neuron is not firing, the pump is maintaining the resting membrane potential by transporting ions that are constantly leaking out through the leak channels.
4. FALSE - Although humans have large and highly-developed brains, our sensory receptors are typical of many vertebrates.
5. FALSE - A variety of specialized receptors detect different degrees of pressure at different levels in the skin.
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