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Stack #4583560
| Question | Answer |
|---|---|
| What is an action potential? | A rapid electrical signal that travels down a neuron when sodium rushes in and potassium moves out |
| What is the difference between continuous and saltatory conduction? | Continuous conduction happens on unmyelinated axons and is slower, while saltatory conduction “jumps” between nodes on myelinated axons and is much faster |
| What do chemical synapses use to communicate? | Neurotransmitters that cross the synaptic cleft and bind to receptors on the next cell |
| What is cerebrospinal fluid (CSF) and what does it do? | CSF is a clear fluid that protects the brain and spinal cord, carries nutrients, and removes waste |
| What is the function of the spinal cord? | It sends signals to and from the brain and handles quick reflexes through reflex arcs |
| What does the autonomic nervous system (ANS) control? | Involuntary functions like heart rate, breathing, digestion, and stress responses |
| What is the difference between the sympathetic and parasympathetic divisions? | Sympathetic is “fight or flight,” increasing alertness and energy use; parasympathetic is “rest and digest,” helping the body relax and recover |
| What is the main job of the lymphatic system? | To return excess fluid to the bloodstream, help with immunity, and absorb fats from the digestive system |
| What is lymphedema? | Swelling caused by blocked or damaged lymphatic vessels that prevent fluid from draining properly |
| What is the main purpose of the respiratory system? | To bring oxygen into the body, remove carbon dioxide, and help maintain homeostasis in changing conditions |
Created by:
Marissa.titus