Guiding questions for each lecture
You can use these questions to review your lectures and check if you caught everything/understood everything discussed in lecture or your pre-class material.
Lecture 1 guiding questions
At a high level (big picture), can you answer the following?
What makes up the nervous system? (what cells)?
Neuron and glial cell
What are the two major anatomical divisions of the nervous system?
- Central nervous system and
- Peripheral nervous system
What are the divisions of the peripheral nervous system?
Somatic nervous system and Automonic nervous system
⛛under ANS
sympathetic nervous system and parasympathetic nervous system
How do neurons communicate?
Neurons communicate using both electrical and chemical signals. sensory stimuli are converted to electrical signals.
Action potential signals carried along neurons.
synapses are chemical or electrical junctions that allow electrical signals to pass from neurons to other cells.
Can you identify the flow of ions in/out of cells based on concentration gradients?
ions in and out of the cell based on concentration gradients moving from high concentration to low concentration.
Describe the mechanism of the Na+/K+ pump and explain how it contributes to the resting membrane potential of a cell.
Na+/K+ pump help to maintain osmotic equilibrium and membrane potential in cells. The sodium and potassium move against the concentration gradient. Na+/K+ATPase pump maintains the gradient of higher sodium concentration in the extracellularly and higher level of potassium of potassium intracellularly.
What would happen to the resting membrane potential if the Na+/K+ pump was mutated and not working?
Additional information
carrier proteins are typically selective for one or a few substances.
( example Na+ K+)
Carrier proteins can change their shape to move a target molecule from one side of the membrane to the other.
Channel proteins span the membrane and make hydrophilic tunnels across it, allowing their target molecules to pass through by diffusion.
Channel and carrier proteins transport material at different rates.
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